I have a few hundred audio files of spoken lectures. I need a piece of software I can call from the command line to process the audio in various ways e.g. changing format, normalising, etc.
So far I have tried to batch process files using Audacity using a chain as detailed in this video. However, this is not satisfactory as I can't call this from command line (and therefore batch process files in a flexible way adapting to size/filetype etc.).
Are you able to point towards any software that can do this kind of audio processing from the command line?
Depending on your requirements, you don't always have the use Audacity.
You can use SOX in order to achieve what you are trying to do in terms of getting the file information of an audio file, as well as carry out compression.
sox long.mp3 short.mp3 trim 10
For comparison etc..
To expand, you can use a bash script, to iterate through each of the files in a directory and then run the command on each of the files.