Audio quality issues 48k files

[thenewsjunkie]

Hello,

I'm using this project on my website to receive recorded messages on my website: https://thenewsjunkie.com/audio/recording/

Many of the messages sound fine but some are poor quality and choppy.

All of the recordings that sound fine are 44.1k and all of the poor quality recordings at 48k. It seems like there's a mismatch between the device output and the recorded file or something.

Does anyone have experience with improving the audio quality in this situation?