[SoX-users] Differences recording to OGG and WAV and how to fix this

[Pander <pa...@us...>]

Hi all,

I use the same microphone (USB 24 bit 48kHz) to do the following recordings:

rec -q -r 48000 -c 1 -b 24 -e gsm-full-rate --buffer 16384 -C 10
test.wav trim 0 360
rec -q -r 48000 -c 1 -b 24 -e gsm-full-rate --buffer 16384 -C 10
test.ogg trim 0 360

But the result in spectrograms is are very different, see:
https://i.imgur.com/fTMvDuK.png WAV
https://i.imgur.com/z6YUcxF.png OGG

The range used in the WAV is what I want and also get via other software
but it has these horzontal stripes (also for 32 bit). Sometimes I have a
buffer over-run but these do not correlate with when the lines appear.
These appear far more often.

However, differences with ulaw are minimal between these two formats:
https://i.imgur.com/5GlszUo.png WAV
https://i.imgur.com/e89w9Km.png OGG

How do I get rid of the veritcal lines when recoding WAV?

How can I get the OGG recording improve use of range?

Thanks,

Pander