Re: [LAU] app for simple editing and recording?

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To: <linux-audio-user@...>
Date: Sunday, May 23, 2010 - 10:11 pm

On Sun, May 16, 2010 at 12:49:06AM +0200, Renato wrote:

Hi Renato,

Did you find a workable solution?

You mention Ecasound. It is capable of trimming and fading.
This command-line example (not tested) snips 90 seconds of input.mp3
starting at 3 seconds, with a 1 second fade-in and 1 second
logarithmic fade-out to -128dB.

ecasound -i:select,3,90,input.mp3 \
-eadb:0 \
-klg:1,-128,0,4,0,0,1,1,89,1,90,0 \
-o:output.mp3

The -eadb operator is a logarithmic
volume control (zero is 100%).

-klg is a linear-envelope controller that modulates the
previous volume operator. (man ecasound for details.)

Ecasound has an interactive mode as well, and is suitable
for recording from JACK.

Sox is a command-line application suited for trimming and fading.

Seeing a couple of posts asking about fades, I added this
feature to Nama, a multitrack audio production app based on
Ecasound.[1] As a first implementation, it offers only a
logarithmic fade, available through the text interface.

For example, fade in the current track over one second
starting at mark1:

nama> fade in mark1 1

And fade out over 2 seconds, ending at mark2:

nama> fade out 2 mark2

HTH

Joel

1. http://freeshell.de/~bolangi/cgi1/nama.cgi/00home.html

> thanks

--
Joel Roth
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Messages in current thread:
[LAU] app for simple editing and recording?, Renato, (Sat May 15, 10:42 pm)
Re: [LAU] app for simple editing and recording?, Joel Roth, (Sun May 23, 10:11 pm)
Re: [LAU] app for simple editing and recording?, Lorenzo, (Sun May 16, 8:19 pm)
Re: [LAU] app for simple editing and recording?, Björn Lindig, (Mon May 24, 5:54 pm)
Re: [LAU] , Mike Cookson, (Sun May 16, 4:26 am)
Re: [LAU] app for simple editing and recording?, Louigi Verona, (Sun May 16, 7:27 am)
Re: [LAU] app for simple editing and recording?, Louigi Verona, (Sun May 16, 6:14 pm)
Re: [LAU] app for simple editing and recording?, Martin Wohlleben, (Sun May 16, 2:05 pm)
Re: [LAU] , Mike Cookson, (Sun May 16, 4:00 am)
Re: [LAU] app for simple editing and recording?, Harry Van Haaren, (Sat May 15, 11:52 pm)
Re: [LAU] app for simple editing and recording?, David Adler, (Sun May 16, 12:09 am)
Re: [LAU] app for simple editing and recording?, Renato, (Sun May 16, 12:07 am)
Re: [LAU] app for simple editing and recording?, Brett McCoy, (Sat May 15, 11:00 pm)
Re: [LAU] app for simple editing and recording?, Philipp Überbacher, (Sat May 15, 11:23 pm)
Re: [LAU] app for simple editing and recording?, Niels Mayer, (Sun May 16, 2:40 am)