Sample based synth with pitch change, playing samples in original velocity

[ssj71]

AFAIK the only linux SFZ player is linuxsampler. I'm satisfied with it though.

[j_e_f_f_g]

have some samples which are oscilating type, and having same tempo on that oscilation in any key played is important.

So you want a player that does "pitch shifting" to transpose the pitch, and then "time stretching" to restore the original tempo (and ideally the timbre/tone). First part is easy to do in realtime (ie, without a noticeable delay). All samplers do it. The second part is more math complex. To do it realtime, most products use a DSP chip. Most wave editors, such as audacity, can do time stretching to a waveform. But there may be an audible delay before you hear the result. Especially if you tried to do it with several waves simultaneously. not gonna happen on your dell laptop.

https://en.wikipedia.org/wiki/Audio_tim ... dification

[tavasti]

have some samples which are oscilating type, and having same tempo on that oscilation in any key played is important.

So you want a player that does "pitch shifting" to transpose the pitch, and then "time stretching" to restore the original tempo (and ideally the timbre/tone). First part is easy to do in realtime (ie, without a noticeable delay). All samplers do it. The second part is more math complex. To do it realtime, most products use a DSP chip.

Mostly correct. However, there is no need to do calculation realtime. Samples can be calculated when defining 'instrument'. Using pitch bend would not work, but I don't think that's a problem.

[ssj71]

so I think your only option is to use rubberband or similar to do a (time preserving) pitch shift to generate all the notes you want offline, then you can put them into a SFZ or make an sf2 with swami or whatever.

[tavasti]

so I think your only option is to use rubberband or similar to do a (time preserving) pitch shift to generate all the notes you want offline, then you can put them into a SFZ or make an sf2 with swami or whatever.

Yes, that's most likely the situation. Remaining question is, what would be command-line tool providing best quality? At the moment, only option I know is sox, but maybe there is others also.

[ssj71]

rubberband is the one I've heard most of and seen used the most. https://bitbucket.org/breakfastquay/rubberband

[briandc]

Thanks to everyone here for this info! I've been toying with the idea of trying to have same-length samples across the keyboard, for the same reasons. This looks like a good start indeed!


brian