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

On Sun, May 16, 2010 at 12:49:06AM +0200, Renato wrote:
> hello list,
>
> I'd need to:
> 1) - open mp3/wav files, do some trimming and fade ins/outs and save to
> mp3/wav
> 2) - do some recordings of JACK-apps
>
> and I'd like to do so in one application. Audacity would be
> perfect but it doesn't appear in patchage; I can only decide it's input
> from it's prefs, but I need to have multiple apps that go into it (and
> the prefs dialog won't let me do it)...
>
> All apps I found so far do either 1 and are not JACK-apps (or have a
> problem similar to audacity's) (Rezound,Sweep) or do 2 but not 1
> (Ardour,jack_rec)
>
> I haven't tested the following, and would like to know from you if any
> of them does both 1 and 2 without me testing them all:
> qtractor,muse,ecasound,rosegarden

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
> renato

-- 
Joel Roth
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