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Terrible Bluetooth A2DP audio quality - Apple Community
https://discussions.apple.com/thread/3985549
Terrible Bluetooth A2DP audio quality. Hello! I've recently purchased Logitech Wireless Speaker Adapter. It's a piece of hardware that allows you to transmit sound to speakers via Bluetooth using the A2DP technology. I'm experience a great deal of problems while connecting to my MacBook Pro. The sound is crackling all the time.
Does the iPhone support A2DP (Stereo Bluetooth Audio ...
https://www.iphonefaq.org/archives/9722
UPDATE: Yes, as of the release of iPhone OS 3.0, the iPhone now supports A2DP. Many of today's newer wireless devices (i.e. the Samsung Blackjack) support A2DP audio output. A2DP audio devices, such as stereo bluetooth headsets, offer high quality listening ability without those nagging wires. As the iPhone is birthed from the iPod, and is undoubtedly the most music …
How can I disable Bluetooth A2DP profiles on the iPhone 4?
https://apple.stackexchange.com/questions/12835/how-can-i-disable-bluetooth-a2dp-profiles-on-the-iphone-4
This is how my iPhone is connected and plays music through. This way the audio quality is pristine, I can see the track information and control my iPhone from the headunit, and it charges my iPhone. The headunit also pairs via Bluetooth for hands-free calling. However, because the iPhone supports A2DP, this is how it pairs to the headunit.
IPhone – How to disable Bluetooth A2DP profiles on the ...
https://itectec.com/askdifferent/iphone-how-to-disable-bluetooth-a2dp-profiles-on-the-iphone-4/
This is how my iPhone is connected and plays music through. This way the audio quality is pristine, I can see the track information and control my iPhone from the headunit, and it charges my iPhone. The headunit also pairs via Bluetooth for hands-free calling. However, because the iPhone supports A2DP, this is how it pairs to the headunit.
Sound quality of iPhone 4/4S - Articles - SoundExpert
http://soundexpert.org/articles/-/blogs/sound-quality-of-iphone-4
UPDATE: iPhone 4S has the same audio quality as iPhone 4. Despite the fact that audio chip in iPhone 4S has different labeling: iPhone 4: Apple 338S0589 / Cirrus Logic CLI1495B0 42L61. iPhone 4S: Apple 338S0987 / Cirrus Logic CLI1560B0 42L63. the overall audio performance is almost similar to iPhone 4.
Bluetooth audio quality - A2DP - Articles - SoundExpert
http://soundexpert.org/articles/-/blogs/bluetooth-audio-quality-a2dp
SBC 229kbps (Middle Quality) – in 224 kbit/s section. SBC 328kbps (High Quality) – in 320+ kbit/s section. It’s worth to add that A2DP limits the available maximum bit rate to 320 kbps for mono and to 512 kbps for stereo modes allowing the …
Improving A2DP Audio Quality - Bluetooth
https://www.bluetooth.com/wp-content/uploads/2019/03/Improving-A2DP-Audio-Quality_WP_V10.pdf
IMPROVING A2DP AUDIO QUALITY 4 Configuration and Roles 4.1 MEDIA PLAYER (MP) The media player can, among other devices, be a portable media player (MP3 player, video player or mobile phone) or a fixed media player (home audio/video system or in-car audio/video system).
What’s the Difference Between Bluetooth A2DP and aptX?
https://www.howtogeek.com/338750/whats-the-difference-between-bluetooth-a2dp-and-aptx/
Unfortunately, very few hardware makers seem to be actually using this capability, and most A2DP-only devices are re-encoding audio to SBC and de-encoding on the receiver end.This makes the whole process more complicated, resulting in poorer audio quality. aptX: The Upgrade Mobile chip maker Qualcomm bought CSR and its aptX tech in 2015.
A2DP Streaming - Poor Sound Quality | Jeep Enthusiast Forums
https://www.jeepforum.com/threads/a2dp-streaming-poor-sound-quality.1125878/
The problem with the streaming audio quality is in the bit pool rate. When the SW for the 2011 Uconnect system was written his SW for the 2011 vehicles was written in mid 2009 - early 2010 and supported the bit pool rate for the majority of phones. Now Iphone and android phones have started supporting a higher bit pool rate of 33 -35.
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