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

[Jan S. <ha...@st...>]

> You are recording many different audio signals,
> and they have different spectrograms of course.
> 
> Record a signal into a wav file and create the spectrogram:
> 
>   $ rec -c file.wav 0 10
>   $ sox file.wav spectrogram -o wav.png

Sorry:

   $ sox file.wav -n spectrogram -o wav.png

> Now convert that file to an ogg and create its spectrogram:
> 
>   $ sox file.wav file.ogg
>   $ sox file.ogg spectrogram -o ogg.png

   $ sox file.ogg -n spectrogram -o ogg.png


> Are the two spectrograms identical? Yes, nearly identical,
> except the ogg format cuts away the very high frequencies.