Topic: Low audio quality for the mic on Samsung Galaxy S22+

[skullptr]

Another complains from the users we recieved recently are about low audio quality for the mic on Galaxy S22+. In the *.zip file you will find 3 records - Samsung Galaxy S9+ Android 10 (no issues there, just for comparison), Samsung Galaxy S22+ Android 14 with BASS and in Zoom. I tried to change audio input from "Default" to "Camcorder" (there are only two available from BASS on S22+), but the quality of audio remains the same. Will be happy to know where to dig further (:

[Ian @ un4seen]

That bad recording sounds like some low bitrate compression. Was the MP3 file created directly from a BASS recording (eg. using the BASSenc_MP3 add-on) or are you recording in some other format first and then converting? If you aren't recording in WAV format, please try that. Please also see if changing the recording sample rate (in BASS_RecordStart) makes any difference.

[skullptr]

I recorded few more examples with RECTEST and as I can hear the issue is only with 48000Hz (see *.7z file). We can't change sample rate to 44100 (or rather, this is not easy task), since our audio processing rely on it (echo/noise cancellation). Recordings I sent before is just capture of decoded audio of participant.

UPD: same issue with Samsung Galaxy A54

[Ian @ un4seen]

It looks like those 48000hz files are just much quieter than the others for some reason (the quality seems comparable after amplifying them). I'm not sure why that would be. BASS doesn't apply any gain to recordings by default, so I can only guess that it's coming from some software/driver on the device. Do you have any other Samsung devices to try, and are they affected too?

Please check if it's also happening when using the "Camcorder" device by changing the BASS_RecordInit parameter to 1 in the RECTEST example.

[skullptr]

Same recording results with BASS_RecordInit(1). Both, S22+ and A54 are Android 14. I could ask in the company, if someone else have the same audio issues on their Samsung-s. This is quite critical issue, since we have big amount of users on these devices

[Ian @ un4seen]

OK. I'll send you an update with a few more options to try.