On Sat, Oct 08, 2005 at 05:16:47PM +0400, Andrew Gaydenko wrote: ecasound can also perform these operations. -- Eric Dantan Rzewnicki | Systems Administrator Technical Operations Division | Radio Free Asia 2025 M Street, NW | Washington, DC 20036 | 202-530-4900 CONFIDENTIAL COMMUNICATION This e-mail message is intended only for the use of the addressee and may contain information that is privileged and confidential. Any unauthorized dissemination, distribution, or copying is strictly prohibited. If you receive this transmission in error, please contact network(a)rfa.org.

On Sun, Oct 09, 2005 at 11:03:32PM +0400, Andrew Gaydenko wrote: If you use the resample-hq option ecasound uses libsamplerate, which I think is used by sndfile-resample since Erik de Castro Lopo is the author of both libsndfile and libsamplerate. I'm pretty sure ecasound uses libsndfile for most sound file handling, though I'm not 100% sure whether that includes sample width changes. Anyway, the syntax from man ecasound: Resample - access object of different sample rates Object type 'resample' can be used to resample audio object's audio data to match the sampling rate used in the active chainsetup. For example, ecasound -f:16,2,44100 -i resample,22050,foo.wav -o /dev/dsp, will resample file from 22.05kHz to 44.1kHz and write the result to the soundcard device. Child sampling rate can be replaced with keyword 'auto'. In this case ecasound will try to query the child object for its sampling rate. This works with files formats such as .wav which store meta information about the audio file format. To use 'auto' in the previous example, ecasound -f:16,2,44100 -i resample,auto,foo.wav -o /dev/dsp. If ecasound was compiled with support for libsamplerate, you can use 'resample-hq' to use the highest quality resampling algorithm available. To force ecasound to use the internal resampler, 'resampler-lq' (low-quality) can be used. -- Eric Dantan Rzewnicki | Systems Administrator Technical Operations Division | Radio Free Asia 2025 M Street, NW | Washington, DC 20036 | 202-530-4900 CONFIDENTIAL COMMUNICATION This e-mail message is intended only for the use of the addressee and may contain information that is privileged and confidential. Any unauthorized dissemination, distribution, or copying is strictly prohibited. If you receive this transmission in error, please contact network(a)rfa.org.

On 10/8/05, Tom Szilagyi <tszilagyi(a)users.sourceforge.net> wrote: In a related vein, what can I use to approximate Acid Pro's handling of tempo and pitch? Ihave a library loops. Let's say that I want to change the tempo of a loop from 76BPM to 84BPM. How can I do this in Linux? Thanks, Mark

at this time, not much. libaubio looks promising as the start of various tools to do this kind of thing, and there is one GUI app already using it that can do beat slicing and time/pitch effects. unfortunately i forget its name, but someone will shout it out, i am sure. libsoundtouch (as used by ardour and audacity) also comes with some cmdline utilities that might be worth checking into, or you could try it inside ardour (set the tempo to 84bpm, insert the loop, timeFX it to 1 bar or whatever) --p

Thanks for the pointers to Audacity & FreeCycle. I'll look at them for this task when I get a chance. I suppose I was hoping to find a command line oriented option. I have lots of Acid loops and sometimes would like to drop them into an Ardour session, but at a minimum the tempo is never right, and generally the pitch isn't either. It would be great to be able to build a 113BPM set of files from a 98BPM set, maybe with the option of pitching them up or down a bit. Maybe the tools that built FreeCycle have some option to run from the command line? I'll check into that a bit. Thanks, Mark On 10/8/05, Esben Stien <b0ef(a)esben-stien.name> wrote:

yes, that was the one. i am just wrapping up rewriting the visual side of the region list for the gtk2 port. what do you mean by "dies with more than a few hundred files" ? libaubio looks promising. soundtouch seems fundamentally unable to do the job correctly. --p

On 10/8/05, Paul Davis <paul(a)linuxaudiosystems.com> wrote: So far I've been unable to get FreeCycle to build. It uses a library called Aubio which doesn't build for me. Until I get that worked out no go... On the other hand, I found that there is a command line program called soundstretch which seems to be really well suited for what I want to do. It's part of the soundtouch library and probably already on many people's systems. I'm having trouble with it but maybe someone else will figure it out. I've not got a lot of time this afternoon. soundstretch appearsto be able to detect BPM and then both shift BPM and pitch. If I can get it to work then I may be in good shape. http://sky.prohosting.com/oparviai/soundtouch/soundstretch.html NOTE: Listen to all the examples OTHER THAN the "Tempo reduced by -50%" first!! That one is terrible, but the others give a lot of good results, presuming that the mp3's aren't as good as working with real wave files. Cheers, Mark