[LAU] comparing audio recordings on the command-line?

Hi, I'd like to compare recording quality of portable recorders.
I only care about the line-in input of these portable recorders.

I'm thinking:

* play audio through a good DAC and feed the line-in of each recorder

* copy audio files off the SD cards from the recorders

* level match the inputs. Probably based on "sox FILE -n stats"
  output change input levels on each recorder to match levels.

* play audio again through the DAC and feed the line-ins

* copy audio files off the SD cards from the recorders again

* run something like diff(1) for audio

I'm willing to look at a spectrogram/graph image with feh(1), but I
_really_ don't want to touch a mouse or tab through form
buttons/boxes/inputs on a GUI.

Thanks for reading.
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Received on Tue Sep 17 16:15:01 2013