[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Audio volume normalisation

I had an item on the DVD TODO list for a while about normalising audio
volume across the various recordings.  I'm now trying to get that

I extracted the audio streams from each of them and used
normalize-audio to find the average and peak volumes.  Since the
average-to-peak difference for virtually all the recordings is no more
than 16 dB, I calculated a volume adjustment for each that would
either make its average volume -16 dB or, where that would result in
clipping or compression of the peak, that would make the peak volume
0 dB.  I am now applying adjustments that aren't very close to zero.

I am attaching a Gnumeric spreadsheet that shows the calculations.

Ben Hutchings
I haven't lost my mind; it's backed up on tape somewhere.

Attachment: audio-levels.gnumeric
Description: application/gnumeric

Reply to: