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 _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
