The A2DP full name is the Advenced Audio Distribution Profile Bluetooth audio transmission model agreement. A2DP specifies the protocol stack software and the usage method for transmitting high-quality music file data using the Bluetooth asynchronous transmission channel method. Based on this protocol, high-quality music can be transmitted via Bluetooth. This technology can use stereo Bluetooth headset to listen to the music in the phone.
The so-called Bluetooth actually includes many versions and a small subset of functional specifications, called A2DP (Advance Audio Distribution Profile), is specifically designed for the use of Bluetooth to transmit stereo music. As long as two Bluetooth devices support this specification, then Wireless transmission of stereo music can be achieved Currently Bluetooth headsets that support A2DP are mainly moto HT820, and i. A series of bluetooth earphones from Tech and bluetooth phones with built-in A2DP function: NOKIA 8800 is the world's first mobile phone with A2DP function. To put it plainly, mobile phones with A2DP function can use Bluetooth headsets to support stereo playback. music. There are Moto's E680i and HP's PPC phone 6515, other models can see the final table!
In fact, the mobile phone should support A2DP to say plainly, as long as the program adds a function, this is no problem for the smart phone. So now the S60 series of mobile phones can be installed by a. Tech's playback software works with i. Tech's Bluetooth Headset can be used to achieve wireless stereo music. Specific Usage Methods We can go online and search for non-smartphones. Due to the limitation of scalability, it is only possible to wait for manufacturers to release new software for the flashing machine. It is so convenient (such as painting e680i from e680).
Now only i. Tech this manufacturer provides solutions for the s60 platform, and because of commercial reasons must use their own brand of Bluetooth headsets.
Recognize A2DP
After understanding the technical specifications of Bluetooth, if you want to listen to high-quality stereo music through a Bluetooth device, you must know A2DP (Advance Audio Distribution Profile).
) This term. A2DP allows two devices that also support Bluetooth audio transmission to be connected to each other. Whether it is version 1.1 or 1.2, it can output music like CD quality (16 bits, 44.1 kHz).
If one of the parties does not support A2DP, then the sound effects can only output the Handsfree Profile (8 bits, 8 kHz). Even if the headset is designed with a two-eared headset, it can only have the monophonic sound quality of a general telephone, and the real Stereo is far away.
The application of A2DP: Bluetooth stereo headset + mobile phone Bluetooth stereo headset + mobile phone, in addition to the general voice call features, the biggest feature is that you can directly listen to the music played in the phone through a Bluetooth stereo headset. The mobile phone with A2DP mode built in the market currently has two smartphones, the HP h6315 (6365) and the Motorola E680i, with a Bluetooth stereo headset (example: I.Tech.Clip.S, I.Tech.Clip.S35, etc.), You can listen directly to the music in your phone!
In addition to mobile phone built-in A2DP, mobile phones using Symbain Series 60 operating system, such as Nokia 7610, 6670, 3230, 6680, 6630, N-Gage, QD, etc. NOKIA S60 mobile phones and Panasonic X700, X800. . . And so on, the famous bluetooth manufacturer iTec special bonus BluePlayer program (currently there are three versions, 1, corresponding to 6630, 6680, etc., 2, corresponding to QD, N-Gage, 3, corresponding to other S60 interface mobile phone), can make Series 60 mobile phone support A2DP mode also enjoys the "wireless" pleasure of music.
Application of A2DP II: Bluetooth Stereo Headphone + Personal Computer With the popularity of Bluetooth devices, more and more people and laptops are starting to use Bluetooth devices. The Bluetooth application on the computer can be said to be the most type, whether it is a printer,
The connection of the mouse and keyboard, even the synchronization of the PDA and the mobile phone, can be performed through the Bluetooth device. Currently, the most popular application on personal computers is to use Skype for Bluetooth headsets. After installing the Bluetooth receiver on the computer and installing the driver, Bluetooth can be paired and used to solve the trouble of wired devices.
After the introduction of the Bluetooth stereo headset, in addition to being used for Skype calls, headphones can also be used to listen to music in the computer, regardless of whether the Bluetooth receiver specification in the computer is 1.1 or 1.2.
Version, as long as it is updated to support A2DP mode driver (WIDCOMM need to support more than version 4.0, IVT need more than version 1.4), you can support the Bluetooth headset provides stereo sound output, so that users can experience "sound" on the ground The feeling does not have to worry that the speaker will interfere with other people.
Application of A2DP III: Bluetooth Stereo Headphone + Music Player If your phone does not support Bluetooth A2DP, but you want to use Bluetooth Headset to listen to music, there are also manufacturers to launch HiFi Bluetooth transmission device for the 3.5 mm headphone plug (Blue Con35) . As long as there is a 3.5 mm headphone connector music player, such as iPod, MP3 Player, home stereo or radio, can be directly converted to Bluetooth wireless transmission device, use it without having to go through complicated settings, just turn on the transmitter and Bluetooth After the stereo headset is powered on, it will pair itself, letting you directly feel the magic of wireless applications
The so-called Bluetooth actually includes many versions and a small subset of functional specifications, called A2DP (Advance Audio Distribution Profile), is specifically designed for the use of Bluetooth to transmit stereo music. As long as two Bluetooth devices support this specification, then Wireless transmission of stereo music can be achieved Currently Bluetooth headsets that support A2DP are mainly moto HT820, and i. A series of bluetooth earphones from Tech and bluetooth phones with built-in A2DP function: NOKIA 8800 is the world's first mobile phone with A2DP function. To put it plainly, mobile phones with A2DP function can use Bluetooth headsets to support stereo playback. music. There are Moto's E680i and HP's PPC phone 6515, other models can see the final table!
In fact, the mobile phone should support A2DP to say plainly, as long as the program adds a function, this is no problem for the smart phone. So now the S60 series of mobile phones can be installed by a. Tech's playback software works with i. Tech's Bluetooth Headset can be used to achieve wireless stereo music. Specific Usage Methods We can go online and search for non-smartphones. Due to the limitation of scalability, it is only possible to wait for manufacturers to release new software for the flashing machine. It is so convenient (such as painting e680i from e680).
Now only i. Tech this manufacturer provides solutions for the s60 platform, and because of commercial reasons must use their own brand of Bluetooth headsets.
Recognize A2DP
After understanding the technical specifications of Bluetooth, if you want to listen to high-quality stereo music through a Bluetooth device, you must know A2DP (Advance Audio Distribution Profile).
) This term. A2DP allows two devices that also support Bluetooth audio transmission to be connected to each other. Whether it is version 1.1 or 1.2, it can output music like CD quality (16 bits, 44.1 kHz).
If one of the parties does not support A2DP, then the sound effects can only output the Handsfree Profile (8 bits, 8 kHz). Even if the headset is designed with a two-eared headset, it can only have the monophonic sound quality of a general telephone, and the real Stereo is far away.
The application of A2DP: Bluetooth stereo headset + mobile phone Bluetooth stereo headset + mobile phone, in addition to the general voice call features, the biggest feature is that you can directly listen to the music played in the phone through a Bluetooth stereo headset. The mobile phone with A2DP mode built in the market currently has two smartphones, the HP h6315 (6365) and the Motorola E680i, with a Bluetooth stereo headset (example: I.Tech.Clip.S, I.Tech.Clip.S35, etc.), You can listen directly to the music in your phone!
In addition to mobile phone built-in A2DP, mobile phones using Symbain Series 60 operating system, such as Nokia 7610, 6670, 3230, 6680, 6630, N-Gage, QD, etc. NOKIA S60 mobile phones and Panasonic X700, X800. . . And so on, the famous bluetooth manufacturer iTec special bonus BluePlayer program (currently there are three versions, 1, corresponding to 6630, 6680, etc., 2, corresponding to QD, N-Gage, 3, corresponding to other S60 interface mobile phone), can make Series 60 mobile phone support A2DP mode also enjoys the "wireless" pleasure of music.
Application of A2DP II: Bluetooth Stereo Headphone + Personal Computer With the popularity of Bluetooth devices, more and more people and laptops are starting to use Bluetooth devices. The Bluetooth application on the computer can be said to be the most type, whether it is a printer,
The connection of the mouse and keyboard, even the synchronization of the PDA and the mobile phone, can be performed through the Bluetooth device. Currently, the most popular application on personal computers is to use Skype for Bluetooth headsets. After installing the Bluetooth receiver on the computer and installing the driver, Bluetooth can be paired and used to solve the trouble of wired devices.
After the introduction of the Bluetooth stereo headset, in addition to being used for Skype calls, headphones can also be used to listen to music in the computer, regardless of whether the Bluetooth receiver specification in the computer is 1.1 or 1.2.
Version, as long as it is updated to support A2DP mode driver (WIDCOMM need to support more than version 4.0, IVT need more than version 1.4), you can support the Bluetooth headset provides stereo sound output, so that users can experience "sound" on the ground The feeling does not have to worry that the speaker will interfere with other people.
Application of A2DP III: Bluetooth Stereo Headphone + Music Player If your phone does not support Bluetooth A2DP, but you want to use Bluetooth Headset to listen to music, there are also manufacturers to launch HiFi Bluetooth transmission device for the 3.5 mm headphone plug (Blue Con35) . As long as there is a 3.5 mm headphone connector music player, such as iPod, MP3 Player, home stereo or radio, can be directly converted to Bluetooth wireless transmission device, use it without having to go through complicated settings, just turn on the transmitter and Bluetooth After the stereo headset is powered on, it will pair itself, letting you directly feel the magic of wireless applications
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