Please, Apple, fix the unfortunate Bluetooth audio problem in iOS
As a musician, I love listening to and enjoying music. I tried Deezer but got horrible crackling in my audio (audio compression artifacts) that went away when I used the headphone jack. This is because of transcoding – when MP3 is converted to the AAC codec for bluetooth transmission, information is lost. I decided to try Apple Music because it uses AAC as the music source – theoretically, there should be no transcoding and thus no deterioration in music quality.
But to my dismay, I noticed severe audio compression artifacts when I use Apple Music over Bluetooth. For example, if you’re subscribed to Apple Music, listen to EastSide from 0:30 onwards. Each beat of the drum is accompanied by crackling, and there is continual crackling. Compare it with a quality wired source and the difference is night-and-day. Alternatively, listen to 帶我走 by Rainie Yang. At 2:47 and 2:54, with decent-grade audio equipment there is audible crackling. I tried a TinAudio T2-modded BeatsX with W1 chip. Again, you hear crackling. Unfortunately, this is not an isolated incident – many 2000’s Mandopop songs show the same issue. I’ve also heard crackling in many English pop songs. I’ve also confirmed that all these songs are encoded in AAC.
I then tried to use my MacBook instead, and there was no crackling (with AAC codec)! I’m impressed in the bluetooth stack for macOS but a little more disappointed in the iOS bluetooth stack. I wish Apple would port over their impressive macOS bluetooth audio implementation to iOS.
I’ve tried this on 5 different iOS devices, and this seems to be a real problem. Do you guys face this issue as well? Please share your experiences. I’ve submitted feedback to Apple at [Apple Feedback](https://apple.com/feedback) and hope that anyone else facing this issue can do so as well.