Re: [ecasound] Issue with mixing of the files

From: Mario Lang <mlang@email-addr-hidden>
Date: Thu Feb 10 2005 - 10:16:21 EET

Hemant Joshi <hemant_joshius@email-addr-hidden> writes:

> I have a number of files f1 .. fn and I just want to concatenate them one after another (in time,
> non-overlapping). I did that by writing the .ewf file for each of the .wav files. Each of those
> .ewf file have offset set such that they come one after another in time. As a result I get the
> output file that is a concatenation of all the f1 ... fn. This is what I want but when I read it
> back in my audio processing tool I see that the amplitude of the concatenated output file is
> reduced significantly. Initially all the component files f1 ... fn were normalized to -6 dB.

I recently discovered that this works (if you're using wav files at least):

cat f*.wav | ecasound -i stdin -o concat.wav

Your problem seems to be that you're really mixing the files,
and not concatenating. I guess ecasound divides the signal by the number
of files you have. WHich reminds me that I once really wanted
to write a soundfile cat tool.

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Received on Thu Feb 10 12:15:07 2005

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