this post was submitted on 01 Oct 2023
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Bluetooth is 1.4Mb/s. At 74 minutes, the recommended length of a CD per the standard, you will have transferred 777MB, or more than fits on a CD. Even ignoring all the massive advancements in audio compression, and massive advancements in computational power afforded to decompression hardware (thus allowing better compression to be used), you will have more bandwidth, or "quality" in a Bluetooth stream than a CD-player compatible CD.
Bluetooth audio codecs still leave a lot to be desired, and are pretty far from the cutting edge of compression to put it mildly. You can get good audio, but you have to be very careful with your combination of headphones and output device, because a lot of combinations don't have the same codecs, and you end up with the lowest common multiple. There are new standards in development, though, so I think this will be largely solved in about 5 years.
Yeah, what bus_factor said, the codecs compress it and loses a bunch of audio quality. I know because I along with friends who are not extreme audiophiles can tell the difference.
If it's truly awful you might be in phone call mode. If the microphone is enabled it switches to the phone call profile which only supports a single, extremely shitty codec, so if it sounds like you're listening to FM radio with very poor signal, you should probably switch to a microphone not attached to your headphones.
It's not terrible, it's just noticeable. Like if you were to use the same headphones with the cable you'll be like "yo, this is even better".