A2dp bluetooth receivers
Author: u | 2025-04-24
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Stream Pandora, Spotify, NPR, iPod content, etc. - all right from your pocket, in your car!When I bought my Audi S4, I was frustrated by the lack of A2DP Bluetooth streaming. I'm offering the below accessories after building an Audi Bluetooth adapter solution for myself and getting many comments from friends that I should offer these for sale to the Audi community.Each custom cable is hand-made. The Bluetooth receiver (also below) is sold both in combo with the custom cable and seperately. You save a few bucks buying the combo. These are standard 30-pin Bluetooth receivers designed originally to turn an iPhone dock into a Bluetooth streaming dock. These are not modified in any way. If you have one already, or wish to use a different 30-pin Bluetooth receiver, choose the option below for -JUST- the modified cable.Supports Bluetooth 4.0+EDR & aptX® for the HIGHEST quality sound!Compatible with future iOS and Android software updates! - Learn MoreWorks with: . . . and many more! Watch the YouTube Installation Video Have more questions? Check out the FAQ. If your question is not answered in the FAQ, please contact me.Not convinced yet? Check out what our customers are saying:"Audi should offer it through their service departments" -Matt Snodgrass"Hooked everything up and was streaming Pandora in less than 5 minutes!" -Brian Baumann"I feel like I'm driving around in a new car!" -Bryan Tanis COMBO DEAL - Custom Audi AMI AUX Cable w/Bluetooth 4.0 A2DP ReceiverCustom cable that appears to 3G MMI as an "AUX-input" cable instead of the standard iPhone AMI cable. This custom cable will provide power to the Bluetooth receiver (or other connected 30-pin accessory) and routes the audio from the included 30-pin Bluetooth A2DP receiver to the car's MMI as an AUX input.This is the cable -and- the 30-pin Bluetooth receiver. Receiver supports EDR (enhanced data rate), and aptX® for the highest quality sound possible.THIS OPTION IS EVERYTHING YOU NEED to add Bluetooth streaming to your Audi w/3G MMI from any phone/device that supports the Bluetooth A2DP protocol.Watch the installation video$96.00LIMITED STOCKIf ordered today, will ship out:in 1-3 daysCustom Audi AMI AUX CableCustom cable that appears to 3G-MMI as an "AUX-input" cable instead of the standard iPhone AMI cable. This custom cable will provide power to a Bluetooth receiver (or other connected 30-pin accessory) and routes the audio from a 30-pin Bluetooth receiver or your iOS device directly to the
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Advanced Master Clock (option) The AMC module handles input and output clock signals to synchronize the APx52x B Series with external equipment (or vice versa). This module also enables jitter generation and analysis in APx500 Series analyzers with Advanced Digital (ADIO), Digital Serial (DSIO) or PDM modules installed.ASIO (standard) PC audio interfaces with installed ASIO drivers appear within the APx500 software as one of APx’s I/O options, with support for up to 16 bidirectional channels. All measurements and test sequences in APx may be used via the ASIO interface, allowing for complete characterization of the connected audio device.Bluetooth Duo (option) The Bluetooth Duo delivers a wider selection of A2DP codecs, faster pair and connection times, an increased feature set within APx500 measurement software, and improved RF shielding for use in production test environments. APx Duo supports Bluetooth core specification v4.2, HFP v1.7, HSP v1.2, AVRCP v1.4 and A2DP v1.3. Note: APx Bluetooth Duo requires v4.5 APx500 software (or later) and can only be installed on “Type E” APx chassis (manufactured after August 2012).Bluetooth Legacy (option) The Bluetooth module, with built-in radio and software stack, allows engineers to measure their Bluetooth devices directly. All Bluetooth controls are integrated into the analyzer software and APx supports A2DP, HFP 1.6, and AVRCP profiles. Codec support includes SBC, aptX, CVSD, and wideband speech (mSBC).PDM 16 (option) PDM 16 is an optional input module providing sample-accurate inter-channel phase information for up to 16 channels of pulse density modulated signals. With its acoustically-silent remote pod and extension cable preserving PDM signal integrity for up to 10 meters, PDM 16 readily supports MEMS microphone measurements in anechoic chambers. As an added feature, the module can provide up to 50 mA Vdd power supply to the device, or devices, under test.PDM (option) The Pulse Density Modulation (PDM) option provides direct connectivity for audio devices that have a PDM output such as a MEMS microphone, or an input such as the decimator on a smartphone chip. In addition to standard audio measurements, APx provides variable DC voltage, variable sample rate, and PSR (power supply rejection) measurements for testing devices’ full operating parameters. Jitter capable.Digital Serial I/O (option) Digital serial capability is essential in R&D for evaluating designs at the circuit board level. The Digital Serial I/O (DSIO) option provides a direct multichannel connection to chip-level interfaces such as I2S, TDM, and other popular serial interface formats including left-justified, right-justified, and DSP. Jitter capable.HDMI2 + eARC (option) The APx HDMI option allows engineers to measure HDMI audio quality and audio format compatibility on devices such as surround sound receivers, set-top boxes, smartphones, tablets, TVs, and DVD or Blu-ray Disc™ players. APx can stream both lossless and compressed formats from pre-encodedA2dp bluetooth receiver - Alibaba.com
Device address esp_a2d_disc_rsn_t disc_rsnreason of disconnection for "DISCONNECTED" struct a2d_get_stat_param#include ESP_A2D_SNK_GET_DELAY_VALUE_EVT. Public Membersuint16_t delay_valuedelay report value struct a2d_prof_stat_param#include ESP_A2D_PROF_STATE_EVT. Public Membersesp_a2d_init_state_t init_statea2dp profile state param struct a2d_psc_cfg_param#include ESP_A2D_SNK_PSC_CFG_EVT. Public Membersesp_a2d_psc_t psc_maskprotocol service capabilities configured struct a2d_report_delay_stat_param#include ESP_A2D_REPORT_SNK_DELAY_VALUE_EVT. Public Membersuint16_t delay_valuedelay report value struct a2d_set_stat_param#include ESP_A2D_SNK_SET_DELAY_VALUE_EVT. Public Membersesp_a2d_set_delay_value_state_t set_statea2dp profile state param uint16_t delay_valuedelay report value struct media_ctrl_stat_param#include ESP_A2D_MEDIA_CTRL_ACK_EVT. Public Membersesp_a2d_media_ctrl_t cmdmedia control commands to acknowledge esp_a2d_media_ctrl_ack_t statusacknowledgement to media control commands Structuresstruct esp_a2d_mcc_tA2DP media codec capabilities union. Public Membersesp_a2d_mct_t typeA2DP media codec type uint8_t sbc[ESP_A2D_CIE_LEN_SBC]SBC codec capabilities uint8_t m12[ESP_A2D_CIE_LEN_M12]MPEG-1,2 audio codec capabilities uint8_t m24[ESP_A2D_CIE_LEN_M24]MPEG-2, 4 AAC audio codec capabilities uint8_t atrac[ESP_A2D_CIE_LEN_ATRAC]ATRAC family codec capabilities union esp_a2d_mcc_t::[anonymous] cieA2DP codec information element MacrosESP_A2D_MCT_SBCMedia codec types supported by A2DP. SBC ESP_A2D_MCT_M12MPEG-1, 2 Audio ESP_A2D_MCT_M24MPEG-2, 4 AAC ESP_A2D_MCT_ATRACATRAC family ESP_A2D_MCT_NON_A2DPNON-A2DP ESP_A2D_PSC_DELAY_RPTProtocol service capabilities. This value is a mask. Delay Report ESP_A2D_CIE_LEN_SBCESP_A2D_CIE_LEN_M12ESP_A2D_CIE_LEN_M24ESP_A2D_CIE_LEN_ATRACType Definitionstypedef uint8_t esp_a2d_mct_ttypedef uint16_t esp_a2d_psc_ttypedef void (*esp_a2d_cb_t)(esp_a2d_cb_event_t event, esp_a2d_cb_param_t *param)A2DP profile callback function type. Param event: Event typeParam param: Pointer to callback parameter typedef void (*esp_a2d_sink_data_cb_t)(const uint8_t *buf, uint32_t len)A2DP sink data callback function. Param buf[in] : pointer to the data received from A2DP source device and is PCM format decoded from SBC decoder; buf references to a static memory block and can be overwritten by upcoming dataParam len[in] : size(in bytes) in buf typedef int32_t (*esp_a2d_source_data_cb_t)(uint8_t *buf, int32_t len)A2DP source data read callback function. Param buf[in] : buffer to be filled with PCM data stream from higher layerParam len[in] : size(in bytes) of data block to be copied to buf. -1 is an indication to user that data buffer shall be flushedReturnsize of bytes read successfully, if the argument len is -1, this value is ignored. Enumerationsenum esp_a2d_connection_state_tBluetooth A2DP connection states. Values:enumerator ESP_A2D_CONNECTION_STATE_DISCONNECTEDconnection released enumerator ESP_A2D_CONNECTION_STATE_CONNECTINGconnecting remote device enumerator ESP_A2D_CONNECTION_STATE_CONNECTEDconnection established enumerator ESP_A2D_CONNECTION_STATE_DISCONNECTINGdisconnecting remote device enum esp_a2d_disc_rsn_tBluetooth A2DP disconnection reason. Values:enumerator ESP_A2D_DISC_RSN_NORMALFinished. A2dp Bluetooth Receiver, online shopping A2dp Bluetooth Receiver, Retail A2dp Bluetooth Receiver from LightInTheBoxBluetooth APT-X / A2DP Bluetooth Receiver
Application ExampleCheck bluetooth/bluedroid/classic_bt folder in ESP-IDF examples, which contains the following application:This is a A2DP sink client demo. This demo can be discovered and connected by A2DP source device and receive the audio stream from remote device - bluetooth/bluedroid/classic_bt/a2dp_sinkAPI ReferenceFunctionsesp_err_t esp_a2d_register_callback(esp_a2d_cb_t callback)Register application callback function to A2DP module. This function should be called only after esp_bluedroid_enable() completes successfully, used by both A2DP source and sink. Parameterscallback -- [in] A2DP event callback functionReturnsESP_OK: successESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: if callback is a NULL function pointer esp_err_t esp_a2d_sink_register_data_callback(esp_a2d_sink_data_cb_t callback)Register A2DP sink data output function; For now the output is PCM data stream decoded from SBC format. This function should be called only after esp_bluedroid_enable() completes successfully, used only by A2DP sink. The callback is invoked in the context of A2DP sink task whose stack size is configurable through menuconfig. Parameterscallback -- [in] A2DP sink data callback functionReturnsESP_OK: successESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: if callback is a NULL function pointer esp_err_t esp_a2d_sink_init(void)Initialize the bluetooth A2DP sink module. This function should be called after esp_bluedroid_enable() completes successfully, and ESP_A2D_PROF_STATE_EVT with ESP_A2D_INIT_SUCCESS will reported to the APP layer. Note: A2DP can work independently. If you want to use AVRC together, you should initiate AVRC first. This function should be called after esp_bluedroid_enable() completes successfully. ReturnsESP_OK: if the initialization request is sent successfullyESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_sink_deinit(void)De-initialize for A2DP sink module. This function should be called only after esp_bluedroid_enable() completes successfully, and ESP_A2D_PROF_STATE_EVT with ESP_A2D_DEINIT_SUCCESS will reported to APP layer. ReturnsESP_OK: if the deinitialization request is sent successfullyESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_sink_connect(esp_bd_addr_t remote_bda)Connect to remote bluetooth A2DP source device. This API must be called after esp_a2d_sink_init() and before esp_a2d_sink_deinit(). Parametersremote_bda -- [in] remote bluetooth device addressReturnsESP_OK: connect requesta2dp Bluetooth receiver with BMW built-in bluetooth?
Be called only after esp_bluedroid_enable() completes successfully, and ESP_A2D_PROF_STATE_EVT with ESP_A2D_DEINIT_SUCCESS will reported to APP layer. ReturnsESP_OK: successESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_source_register_data_callback(esp_a2d_source_data_cb_t callback)Register A2DP source data input function. For now, the input shoule be PCM data stream. This function should be called only after esp_bluedroid_enable() completes successfully. The callback is invoked in the context of A2DP source task whose stack size is configurable through menuconfig. Parameterscallback -- [in] A2DP source data callback functionReturnsESP_OK: successESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: if callback is a NULL function pointer esp_err_t esp_a2d_source_connect(esp_bd_addr_t remote_bda)Connect to remote A2DP sink device. This API must be called after esp_a2d_source_init() and before esp_a2d_source_deinit(). Parametersremote_bda -- [in] remote bluetooth device addressReturnsESP_OK: connect request is sent to lower layer successfullyESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_source_disconnect(esp_bd_addr_t remote_bda)Disconnect from the remote A2DP sink device. This API must be called after esp_a2d_source_init() and before esp_a2d_source_deinit(). Parametersremote_bda -- [in] remote bluetooth device address ReturnsESP_OK: disconnect request is sent to lower layerESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others Unionsunion esp_a2d_cb_param_t#include A2DP state callback parameters. Public Membersstruct esp_a2d_cb_param_t::a2d_conn_stat_param conn_statA2DP connection status struct esp_a2d_cb_param_t::a2d_audio_stat_param audio_stataudio stream playing state struct esp_a2d_cb_param_t::a2d_audio_cfg_param audio_cfgmedia codec configuration information struct esp_a2d_cb_param_t::media_ctrl_stat_param media_ctrl_statstatus in acknowledgement to media control commands struct esp_a2d_cb_param_t::a2d_prof_stat_param a2d_prof_statstatus to indicate a2d prof init or deinit struct esp_a2d_cb_param_t::a2d_psc_cfg_param a2d_psc_cfg_statstatus to indicate protocol service capabilities configured struct esp_a2d_cb_param_t::a2d_set_stat_param a2d_set_delay_value_statA2DP sink set delay report value status struct esp_a2d_cb_param_t::a2d_get_stat_param a2d_get_delay_value_statA2DP sink get delay report value status struct esp_a2d_cb_param_t::a2d_report_delay_stat_param a2d_report_delay_value_statA2DP source received sink report value status struct a2d_audio_cfg_param#include ESP_A2D_AUDIO_CFG_EVT. Public Membersesp_bd_addr_t remote_bdaremote bluetooth device address esp_a2d_mcc_t mccA2DP media codec capability information struct a2d_audio_stat_param#include ESP_A2D_AUDIO_STATE_EVT. Public Membersesp_a2d_audio_state_t stateone of the values from esp_a2d_audio_state_t esp_bd_addr_t remote_bdaremote bluetooth device address struct a2d_conn_stat_param#include ESP_A2D_CONNECTION_STATE_EVT. Public Membersesp_a2d_connection_state_t stateone of values from esp_a2d_connection_state_t esp_bd_addr_t remote_bdaremote bluetoothAmazon.com: A2dp Bluetooth Receiver: Electronics
Is sent to lower layer successfullyESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_sink_disconnect(esp_bd_addr_t remote_bda)Disconnect from the remote A2DP source device. This API must be called after esp_a2d_sink_init() and before esp_a2d_sink_deinit(). Parametersremote_bda -- [in] remote bluetooth device addressReturnsESP_OK: disconnect request is sent to lower layer successfullyESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_sink_set_delay_value(uint16_t delay_value)Set delay reporting value. The delay value of sink is caused by buffering (including protocol stack and application layer), decoding and rendering. The default delay value is 120ms, if the set value is less than 120ms, the setting will fail. This API must be called after esp_a2d_sink_init() and before esp_a2d_sink_deinit(). Parametersdelay_value -- [in] reporting value is in 1/10 millisecondReturnsESP_OK: delay value is sent to lower layer successfullyESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_sink_get_delay_value(void)Get delay reporting value. This API must be called after esp_a2d_sink_init() and before esp_a2d_sink_deinit(). ReturnsESP_OK: if the request is sent successfullyESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_media_ctrl(esp_a2d_media_ctrl_t ctrl)Media control commands. This API can be used for both A2DP sink and source and must be called after esp_a2d_sink_init() and before esp_a2d_sink_deinit(). Parametersctrl -- [in] control commands for A2DP data channelReturnsESP_OK: control command is sent to lower layer successfullyESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_source_init(void)Initialize the bluetooth A2DP source module. A2DP can work independently. If you want to use AVRC together, you should initiate AVRC first. This function should be called after esp_bluedroid_enable() completes successfully, and ESP_A2D_PROF_STATE_EVT with ESP_A2D_INIT_SUCCESS will reported to the APP layer. Note: A2DP can work independently. If you want to use AVRC together, you should initiate AVRC first. ReturnsESP_OK: if the initialization request is sent to lower layer successfullyESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_source_deinit(void)De-initialize for A2DP source module. This function shouldBMR A2DP Bluetooth Music Receiver - amazon.com
I Ray Robert Green/Demand Media Bluetooth is a wireless technology that is most often associated with mono audio headsets used for phone calls. However, Bluetooth is fully capable of carrying a lot more than just phone audio and is a popular wireless solution for stereo headphones as well as portable external speakers. Definition of Bluetooth A2DP i Ray Robert Green/Demand Media The Advanced Audio Distribution Profile (A2DP) is the technology behind what's popularly known as Bluetooth Stereo Audio. Bluetooth A2DP enables a device such as a smartphone to connect wirelessly to a Bluetooth stereo headset and transmit music or other audio, as from a video. By default, the technology decodes audio from its native format (such as MP3 or AAC) and transforms it into a format that is more appropriate for Bluetooth's bandwidth. True audiophiles may notice some loss, but the quality of speakers used in stereo Bluetooth headsets typically does not allow for the loss to be noticed by most users. Most smartphones today are capable of connecting to A2DP devices and transmitting audio. Types of Devices i Ray Robert Green/Demand Media Manufacturers have used Bluetooth A2DP in both mono and stereo headsets. In mono headsets, however, the stereo aspects of A2DP aren’t used. Dual-speaker devices such as Bluetooth stereo headphones and external speakers are the most widely used devices for Bluetooth stereo audio playback. These devices can connect to your smartphone or computer to play audio from a music playlist or a movie you’re watching. A2DP can also transmit high-quality voice from a microphone, but this application is not widely available in consumer devices. A2DP devices with microphones still use a mono audio codec best-suited for high-quality phone audio and meant for a different Bluetooth profile altogether. Writer Bio John Granby began his writing career in 2000 as a founding member of a tech industry website targeted at WAP developers. He has provided in-depth coverage of the wireless industry, served as a speaker at several conferences and authored a book on Bluetooth. Granby earned a Bachelor of Science in computer engineering from Purdue University.. A2dp Bluetooth Receiver, online shopping A2dp Bluetooth Receiver, Retail A2dp Bluetooth Receiver from LightInTheBox A2DP Bluetooth receivers. If the audio quality is lower than that of the Bluetooth APT-X codec, A2DP Bluetooth receivers have the merit of being less expensive, and
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Disconnection that is initiated by local or remote device enumerator ESP_A2D_DISC_RSN_ABNORMALAbnormal disconnection caused by signal loss enum esp_a2d_audio_state_tBluetooth A2DP datapath states. Values:enumerator ESP_A2D_AUDIO_STATE_SUSPENDaudio stream datapath suspended by remote device enumerator ESP_A2D_AUDIO_STATE_STARTEDaudio stream datapath started enumerator ESP_A2D_AUDIO_STATE_STOPPEDenumerator ESP_A2D_AUDIO_STATE_REMOTE_SUSPENDenum esp_a2d_media_ctrl_ack_tA2DP media control command acknowledgement code. Values:enumerator ESP_A2D_MEDIA_CTRL_ACK_SUCCESSmedia control command is acknowledged with success enumerator ESP_A2D_MEDIA_CTRL_ACK_FAILUREmedia control command is acknowledged with failure enumerator ESP_A2D_MEDIA_CTRL_ACK_BUSYmedia control command is rejected, as previous command is not yet acknowledged enum esp_a2d_media_ctrl_tA2DP media control commands. Values:enumerator ESP_A2D_MEDIA_CTRL_NONENot for application use, use inside stack only. enumerator ESP_A2D_MEDIA_CTRL_CHECK_SRC_RDYcheck whether AVDTP is connected, only used in A2DP source enumerator ESP_A2D_MEDIA_CTRL_STARTcommand to set up media transmission channel enumerator ESP_A2D_MEDIA_CTRL_SUSPENDcommand to suspend media transmission enumerator ESP_A2D_MEDIA_CTRL_STOPNoteDeprecated, Please use ESP_A2D_MEDIA_CTRL_SUSPEND enum esp_a2d_init_state_tBluetooth A2DP Initiation states. Values:enumerator ESP_A2D_DEINIT_SUCCESSA2DP profile deinit successful event enumerator ESP_A2D_INIT_SUCCESSA2DP profile deinit successful event enum esp_a2d_set_delay_value_state_tBluetooth A2DP set delay report value states. Values:enumerator ESP_A2D_SET_SUCCESSA2DP profile set delay report value successful enumerator ESP_A2D_SET_INVALID_PARAMSA2DP profile set delay report value is invalid parameter enum esp_a2d_cb_event_tA2DP callback events. Values:enumerator ESP_A2D_CONNECTION_STATE_EVTconnection state changed event enumerator ESP_A2D_AUDIO_STATE_EVTaudio stream transmission state changed event enumerator ESP_A2D_AUDIO_CFG_EVTaudio codec is configured, only used for A2DP SINK enumerator ESP_A2D_MEDIA_CTRL_ACK_EVTacknowledge event in response to media control commands enumerator ESP_A2D_PROF_STATE_EVTindicate a2dp init&deinit complete enumerator ESP_A2D_SNK_PSC_CFG_EVTprotocol service capabilities configured,only used for A2DP SINK enumerator ESP_A2D_SNK_SET_DELAY_VALUE_EVTindicate a2dp sink set delay report value complete, only used for A2DP SINK enumerator ESP_A2D_SNK_GET_DELAY_VALUE_EVTindicate a2dp sink get delay report value complete, only used for A2DP SINK enumerator ESP_A2D_REPORT_SNK_DELAY_VALUE_EVTreport delay value, only used for A2DP SRCA2DP Bluetooth Music Receiver Power Adapter for
Car's MMI as an AUX input. This is the JUST the modified AMI cable from the above combo deal. Buy this if you are supplying your own Bluetooth receiver, or you just want to plug your iOS device directly into MMI for AUX audio input without going into "iPhone Mode".$75.00LIMITED STOCKIf ordered today, will ship out:in 1-3 days30-pin Bluetooth 4.0 A2DP Receiver30-pin A2DP Bluetooth 4.0 receiver. Supports EDR (enhanced data rate), and aptX® for the highest quality sound possible.Use this with the custom AUX cable sold above, or with any iOS dock to support streaming audio over Bluetooth. Supports high quality stereo Bluetooth A2DP profile, and works with any device that's Bluetooth A2DP compatible. This is the JUST the 30-pin Bluetooth receiver. Buy this if you already have a modified cable, or just want an extra to turn an old iOS dock into a Bluetooth streaming dock.This WILL NOT work in an Audi without the custom modified cable.$23.00IN STOCKIf ordered today, will ship out:in 1-3 daysHardwire Power KitHardwire power kit for Audi vehicles with non-3G MMI radios.This is an add-on kit that provides everything you need to provide power to the combo kit sold above. This kit solves the problem of how to deliver power to the Bluetooth receiver with radios that don't supply power to the AMI socket in AUX mode (see the first and last questions in the FAQ for more info). Everything is already soldered and ready to go.Kit includes: custom 30-pin power injector, accessory socket, 12v-5v USB power adapter, add-a-circuit fuse tap w/fuse, and zip ties.This kit takes advantage of the passenger side fuse block, and provides a clean install with no visible wires.View the installation instructionsDISCLAIMER: Installation is simple, but this kit does require direct connection to your vehicle's electrical system. Like any accessory, you are solely responsible for this kit's use and correct/safe installation in your vehicle (see the FAQ for more info).$79.00IN STOCKIf ordered today, will ship out:in 1-3 daysLighter Socket Power KitPower kit for Audi vehicles with non-3G MMI radios.This is an add-on kit that provides everything you need to provide power to the combo kit sold above. This kit solves the problem of how to deliver power to the Bluetooth receiver with radios that don't supply power to the AMI socket in AUX mode (see the first and last questions in the FAQ for more info).Kit includes: custom 30-pin power injector. A2dp Bluetooth Receiver, online shopping A2dp Bluetooth Receiver, Retail A2dp Bluetooth Receiver from LightInTheBoxBluetooth A2DP Music Receiver Audio AdapterS for
Works with Treo 650Tested with Treo 650 on T-MobileBluetooth A2DP, AVRCP profilesMemory Used 239KVersion Tested 1.06.657Availability Available$19.95 Sponsored Links Softick Audio Gateway fromTreoCentral Store Softick Audio Gateway by Softick>> Read Review (Rating 4/5) Softick Audio Gateway can operate with any Bluetooth audio device which supports Advanced Audio Distribution Profile (A2DP) designed to transfer a high-quality stereo audio stream wirelessly.Softick Audio Gateway captures digital audio from Palm OS audio subsystem and redirects it to the Bluetooth A2DP device:Bluetooth stereo headphones or Bluetooth stereo headsetsDesktop PC with a2dp drivers installedBluetooth stereo car kitA2DP Speakers See TreoCentral's extensive review for more infomation... Awesome - with Sonorix Headphones I was skeptical (with my 650), but am totaly in love with my Treo650 again. I am using Sonorix headphones and the pause/ next track features all work well. by Anonymous It's an amazing piece of glueware I use this with the Jabra 620s. I very satisfied with the call and music sound quality. The phone portion does sometimes cause the Treo650 to freeze up - but this is a known issue with my hardware combination (Treo650/SAG/Jabra 620s) by Anonymous It really works! It really works, I use them with my Plantronics Pulsar 590A's.There a few issues with making and receiving calls via the SAG software. Most times you have to reset the SAG back to REMOTE, because it looses the link when afte hanging up on a phone call.But the guys at Softick, keep coming out with upgrades and are continually improving the product.It's worthComments
Stream Pandora, Spotify, NPR, iPod content, etc. - all right from your pocket, in your car!When I bought my Audi S4, I was frustrated by the lack of A2DP Bluetooth streaming. I'm offering the below accessories after building an Audi Bluetooth adapter solution for myself and getting many comments from friends that I should offer these for sale to the Audi community.Each custom cable is hand-made. The Bluetooth receiver (also below) is sold both in combo with the custom cable and seperately. You save a few bucks buying the combo. These are standard 30-pin Bluetooth receivers designed originally to turn an iPhone dock into a Bluetooth streaming dock. These are not modified in any way. If you have one already, or wish to use a different 30-pin Bluetooth receiver, choose the option below for -JUST- the modified cable.Supports Bluetooth 4.0+EDR & aptX® for the HIGHEST quality sound!Compatible with future iOS and Android software updates! - Learn MoreWorks with: . . . and many more! Watch the YouTube Installation Video Have more questions? Check out the FAQ. If your question is not answered in the FAQ, please contact me.Not convinced yet? Check out what our customers are saying:"Audi should offer it through their service departments" -Matt Snodgrass"Hooked everything up and was streaming Pandora in less than 5 minutes!" -Brian Baumann"I feel like I'm driving around in a new car!" -Bryan Tanis COMBO DEAL - Custom Audi AMI AUX Cable w/Bluetooth 4.0 A2DP ReceiverCustom cable that appears to 3G MMI as an "AUX-input" cable instead of the standard iPhone AMI cable. This custom cable will provide power to the Bluetooth receiver (or other connected 30-pin accessory) and routes the audio from the included 30-pin Bluetooth A2DP receiver to the car's MMI as an AUX input.This is the cable -and- the 30-pin Bluetooth receiver. Receiver supports EDR (enhanced data rate), and aptX® for the highest quality sound possible.THIS OPTION IS EVERYTHING YOU NEED to add Bluetooth streaming to your Audi w/3G MMI from any phone/device that supports the Bluetooth A2DP protocol.Watch the installation video$96.00LIMITED STOCKIf ordered today, will ship out:in 1-3 daysCustom Audi AMI AUX CableCustom cable that appears to 3G-MMI as an "AUX-input" cable instead of the standard iPhone AMI cable. This custom cable will provide power to a Bluetooth receiver (or other connected 30-pin accessory) and routes the audio from a 30-pin Bluetooth receiver or your iOS device directly to the
2025-04-16Advanced Master Clock (option) The AMC module handles input and output clock signals to synchronize the APx52x B Series with external equipment (or vice versa). This module also enables jitter generation and analysis in APx500 Series analyzers with Advanced Digital (ADIO), Digital Serial (DSIO) or PDM modules installed.ASIO (standard) PC audio interfaces with installed ASIO drivers appear within the APx500 software as one of APx’s I/O options, with support for up to 16 bidirectional channels. All measurements and test sequences in APx may be used via the ASIO interface, allowing for complete characterization of the connected audio device.Bluetooth Duo (option) The Bluetooth Duo delivers a wider selection of A2DP codecs, faster pair and connection times, an increased feature set within APx500 measurement software, and improved RF shielding for use in production test environments. APx Duo supports Bluetooth core specification v4.2, HFP v1.7, HSP v1.2, AVRCP v1.4 and A2DP v1.3. Note: APx Bluetooth Duo requires v4.5 APx500 software (or later) and can only be installed on “Type E” APx chassis (manufactured after August 2012).Bluetooth Legacy (option) The Bluetooth module, with built-in radio and software stack, allows engineers to measure their Bluetooth devices directly. All Bluetooth controls are integrated into the analyzer software and APx supports A2DP, HFP 1.6, and AVRCP profiles. Codec support includes SBC, aptX, CVSD, and wideband speech (mSBC).PDM 16 (option) PDM 16 is an optional input module providing sample-accurate inter-channel phase information for up to 16 channels of pulse density modulated signals. With its acoustically-silent remote pod and extension cable preserving PDM signal integrity for up to 10 meters, PDM 16 readily supports MEMS microphone measurements in anechoic chambers. As an added feature, the module can provide up to 50 mA Vdd power supply to the device, or devices, under test.PDM (option) The Pulse Density Modulation (PDM) option provides direct connectivity for audio devices that have a PDM output such as a MEMS microphone, or an input such as the decimator on a smartphone chip. In addition to standard audio measurements, APx provides variable DC voltage, variable sample rate, and PSR (power supply rejection) measurements for testing devices’ full operating parameters. Jitter capable.Digital Serial I/O (option) Digital serial capability is essential in R&D for evaluating designs at the circuit board level. The Digital Serial I/O (DSIO) option provides a direct multichannel connection to chip-level interfaces such as I2S, TDM, and other popular serial interface formats including left-justified, right-justified, and DSP. Jitter capable.HDMI2 + eARC (option) The APx HDMI option allows engineers to measure HDMI audio quality and audio format compatibility on devices such as surround sound receivers, set-top boxes, smartphones, tablets, TVs, and DVD or Blu-ray Disc™ players. APx can stream both lossless and compressed formats from pre-encoded
2025-04-04Application ExampleCheck bluetooth/bluedroid/classic_bt folder in ESP-IDF examples, which contains the following application:This is a A2DP sink client demo. This demo can be discovered and connected by A2DP source device and receive the audio stream from remote device - bluetooth/bluedroid/classic_bt/a2dp_sinkAPI ReferenceFunctionsesp_err_t esp_a2d_register_callback(esp_a2d_cb_t callback)Register application callback function to A2DP module. This function should be called only after esp_bluedroid_enable() completes successfully, used by both A2DP source and sink. Parameterscallback -- [in] A2DP event callback functionReturnsESP_OK: successESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: if callback is a NULL function pointer esp_err_t esp_a2d_sink_register_data_callback(esp_a2d_sink_data_cb_t callback)Register A2DP sink data output function; For now the output is PCM data stream decoded from SBC format. This function should be called only after esp_bluedroid_enable() completes successfully, used only by A2DP sink. The callback is invoked in the context of A2DP sink task whose stack size is configurable through menuconfig. Parameterscallback -- [in] A2DP sink data callback functionReturnsESP_OK: successESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: if callback is a NULL function pointer esp_err_t esp_a2d_sink_init(void)Initialize the bluetooth A2DP sink module. This function should be called after esp_bluedroid_enable() completes successfully, and ESP_A2D_PROF_STATE_EVT with ESP_A2D_INIT_SUCCESS will reported to the APP layer. Note: A2DP can work independently. If you want to use AVRC together, you should initiate AVRC first. This function should be called after esp_bluedroid_enable() completes successfully. ReturnsESP_OK: if the initialization request is sent successfullyESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_sink_deinit(void)De-initialize for A2DP sink module. This function should be called only after esp_bluedroid_enable() completes successfully, and ESP_A2D_PROF_STATE_EVT with ESP_A2D_DEINIT_SUCCESS will reported to APP layer. ReturnsESP_OK: if the deinitialization request is sent successfullyESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_sink_connect(esp_bd_addr_t remote_bda)Connect to remote bluetooth A2DP source device. This API must be called after esp_a2d_sink_init() and before esp_a2d_sink_deinit(). Parametersremote_bda -- [in] remote bluetooth device addressReturnsESP_OK: connect request
2025-04-04Be called only after esp_bluedroid_enable() completes successfully, and ESP_A2D_PROF_STATE_EVT with ESP_A2D_DEINIT_SUCCESS will reported to APP layer. ReturnsESP_OK: successESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_source_register_data_callback(esp_a2d_source_data_cb_t callback)Register A2DP source data input function. For now, the input shoule be PCM data stream. This function should be called only after esp_bluedroid_enable() completes successfully. The callback is invoked in the context of A2DP source task whose stack size is configurable through menuconfig. Parameterscallback -- [in] A2DP source data callback functionReturnsESP_OK: successESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: if callback is a NULL function pointer esp_err_t esp_a2d_source_connect(esp_bd_addr_t remote_bda)Connect to remote A2DP sink device. This API must be called after esp_a2d_source_init() and before esp_a2d_source_deinit(). Parametersremote_bda -- [in] remote bluetooth device addressReturnsESP_OK: connect request is sent to lower layer successfullyESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others esp_err_t esp_a2d_source_disconnect(esp_bd_addr_t remote_bda)Disconnect from the remote A2DP sink device. This API must be called after esp_a2d_source_init() and before esp_a2d_source_deinit(). Parametersremote_bda -- [in] remote bluetooth device address ReturnsESP_OK: disconnect request is sent to lower layerESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabledESP_FAIL: others Unionsunion esp_a2d_cb_param_t#include A2DP state callback parameters. Public Membersstruct esp_a2d_cb_param_t::a2d_conn_stat_param conn_statA2DP connection status struct esp_a2d_cb_param_t::a2d_audio_stat_param audio_stataudio stream playing state struct esp_a2d_cb_param_t::a2d_audio_cfg_param audio_cfgmedia codec configuration information struct esp_a2d_cb_param_t::media_ctrl_stat_param media_ctrl_statstatus in acknowledgement to media control commands struct esp_a2d_cb_param_t::a2d_prof_stat_param a2d_prof_statstatus to indicate a2d prof init or deinit struct esp_a2d_cb_param_t::a2d_psc_cfg_param a2d_psc_cfg_statstatus to indicate protocol service capabilities configured struct esp_a2d_cb_param_t::a2d_set_stat_param a2d_set_delay_value_statA2DP sink set delay report value status struct esp_a2d_cb_param_t::a2d_get_stat_param a2d_get_delay_value_statA2DP sink get delay report value status struct esp_a2d_cb_param_t::a2d_report_delay_stat_param a2d_report_delay_value_statA2DP source received sink report value status struct a2d_audio_cfg_param#include ESP_A2D_AUDIO_CFG_EVT. Public Membersesp_bd_addr_t remote_bdaremote bluetooth device address esp_a2d_mcc_t mccA2DP media codec capability information struct a2d_audio_stat_param#include ESP_A2D_AUDIO_STATE_EVT. Public Membersesp_a2d_audio_state_t stateone of the values from esp_a2d_audio_state_t esp_bd_addr_t remote_bdaremote bluetooth device address struct a2d_conn_stat_param#include ESP_A2D_CONNECTION_STATE_EVT. Public Membersesp_a2d_connection_state_t stateone of values from esp_a2d_connection_state_t esp_bd_addr_t remote_bdaremote bluetooth
2025-04-04I Ray Robert Green/Demand Media Bluetooth is a wireless technology that is most often associated with mono audio headsets used for phone calls. However, Bluetooth is fully capable of carrying a lot more than just phone audio and is a popular wireless solution for stereo headphones as well as portable external speakers. Definition of Bluetooth A2DP i Ray Robert Green/Demand Media The Advanced Audio Distribution Profile (A2DP) is the technology behind what's popularly known as Bluetooth Stereo Audio. Bluetooth A2DP enables a device such as a smartphone to connect wirelessly to a Bluetooth stereo headset and transmit music or other audio, as from a video. By default, the technology decodes audio from its native format (such as MP3 or AAC) and transforms it into a format that is more appropriate for Bluetooth's bandwidth. True audiophiles may notice some loss, but the quality of speakers used in stereo Bluetooth headsets typically does not allow for the loss to be noticed by most users. Most smartphones today are capable of connecting to A2DP devices and transmitting audio. Types of Devices i Ray Robert Green/Demand Media Manufacturers have used Bluetooth A2DP in both mono and stereo headsets. In mono headsets, however, the stereo aspects of A2DP aren’t used. Dual-speaker devices such as Bluetooth stereo headphones and external speakers are the most widely used devices for Bluetooth stereo audio playback. These devices can connect to your smartphone or computer to play audio from a music playlist or a movie you’re watching. A2DP can also transmit high-quality voice from a microphone, but this application is not widely available in consumer devices. A2DP devices with microphones still use a mono audio codec best-suited for high-quality phone audio and meant for a different Bluetooth profile altogether. Writer Bio John Granby began his writing career in 2000 as a founding member of a tech industry website targeted at WAP developers. He has provided in-depth coverage of the wireless industry, served as a speaker at several conferences and authored a book on Bluetooth. Granby earned a Bachelor of Science in computer engineering from Purdue University.
2025-04-17