Subject: [linux-audio-user] Commandline tools for some audio operations?
From: Mikhail Ramendik (mr_AT_ramendik.ru)
Date: Sat Sep 25 2004 - 20:10:43 EEST
Hello,
This time I am encoding from a cassette with a rather low noise level.
And I'd like to do several things automatically, from the command line,
rather than call up Audacity and GWC and do some manual selection.
So, which command line tools(if they are available, of course) will:
- Do lowpass filtering?
- Cut off the silence in the beginning and the end?
- Split a file into songs based on long periods of silence in betweeh
them?
For the latter two points, the silence is not absolute, there is some
noise at about -40 db. The tool I want would take a "noise level" value
in db as a parameter. The REALLY good tool would leave about a second of
"silence" before/after a song intact, because it may contain the
beginning or end that are below the threshold. The PERFECT tool would
also be able to look at a file with just noise and give me that db
value, but it may be too much to ask, so I can find out in Audacity as
well.
So - are these tools available? Or am I out of luck? Of course, I can
use GWC to split a file into songs and Audacity to cut out the silence
manually, but that's quite a lot of mouse-dragging for an operation that
could be automatic.
Yours, Mikhail Ramendik
This archive was generated by hypermail 2b28 : Sat Sep 25 2004 - 20:23:19 EEST