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Many people don't realize that Bluetooth requires compression applied to audio too. Theoretically the latest revisions allow already compressed music in certain
by mark-r 8y ago
Many people don't realize that Bluetooth requires compression applied to audio too. Theoretically the latest revisions allow already compressed music in certain formats to be transmitted as-is without recompression, but I'm guessing the data paths to allow that to happen don't usually exist. Double compression will be far more damaging.
- vlovich123 8y agoThey do. Most headsets on the market these days support mp3/aac and the OSes support it too (can't recall if iOS supports mp3).
- mark-r 8y agoBut does the entire chain end-to-end support sending a file unmodified? If for example there's a mixer involved so that your ringtone can interrupt your music, that music can't be piped through without decoding. Is the volume control handled in the headset or does it come earlier? That can't be applied without decoding either.
- vlovich123 8y agoWhen no mixing is occurring I believe there's no decode/re-encode happening so that battery savings are realized. If there are multiple audio streams then the mixer kicks in and for that time period there would be re-encoding occurring but from an acoustic quality perspective that wouldn't matter since the multiple audio streams would already alter the perceived quality relative to the reference.
- saagarjha 8y agoiOS supports MP3: https://developer.apple.com/library/archive/documentation/AudioVideo/Conceptual/MultimediaPG/UsingAudio/UsingAudio.html https://developer.apple.com/library/archive/documentation/Au...