My point was: you should be able to adjust the PITCH of your AudioFileProcessor plugin to -9.302 cents and that will make the sample play at the right speed (and length) however, it will be detuned slightly
-Paul On Tue, Jan 26, 2010 at 3:53 AM, Louigi Verona <[email protected]> wrote: > Hey Paul! > > Then this is a plugin thing - it does not have length parameter - only pitch > parameters. > I guess this is why it is called Pitch Shifter. > > Guys, is there any LADSPA plugin that can do time stretching? I did not find > any. > > > On Tue, Jan 26, 2010 at 11:10 AM, Paul Giblock <[email protected]> wrote: >> >> Rubberband is pretty good, we are planning on using it in future >> versions of LMMS to support tempo/pitch independent changes to >> sample-tracks. >> Since we will be using it on sample-tracks, the processing can be >> precalculated and we can run the conversion with high quality >> settings. >> >> 1) Are you doing something wrong? Maybe. I'm confused why you are >> adjusting cents. Cents is a measure of pitch. The purpose of a tool >> like rubberband is to adjust duration and pitch independently. This >> is probably why you notice the pitch changing without a noticeable >> change in length. I would think you want to adjust something like >> "tempo", "duration", "stretch"... something along those lines. I never >> used Rubberband as an FX before, so I couldn't say for sure. >> 2) How many cents is 1 bpm? This depends on the actual tempo. 1 cent = >> 1/100th of a semitone or 1/1200 of an octave. To fit something >> recorded at 130bpm into 129bpm with a standard sampler (where lowering >> the pitch causes the length to increase) you would need: >> >> 130 to 129 bpm will require an increase in length of 1/129 (0.7752%) >> >> Therefore, the octave will need to drop by 1/129 of an octave (9.302 >> cents) >> >> This may or may not be right, it is 3:00AM and I am just doing this in my >> head. >> >> -Paul >> >> On Mon, Jan 25, 2010 at 11:09 PM, Louigi Verona <[email protected]> >> wrote: >> > Hey guys! >> > I am trying to stretch a loop to use in a song. I tried using various >> > pitch >> > shifting ladspa plugins, like rubberband and AM pitchshifter, but no >> > matter >> > how much or how so small I change the loop, it will not be flawless. The >> > original tempo of the loop is 130, the tempo of the song is 129. If I >> > set >> > the tempo of the song to 130, the loop is perfect. >> > Using rubberband I tried adjusting cents, since a semitone is too much >> > down, >> > but going even 0.5 cents down instantly produces very noticable >> > artifacts >> > and there is always a noticable artifact in the end of the loop. I mean >> > - I >> > hear the change in the pitch, but I do not hear the change in the length >> > of >> > the loop. >> > >> > I tried doing auto stretching in QTractor, thinking I just cannot find >> > the >> > correct value, but in QTractor the result is the same - there is a >> > noticable >> > gap(artifact) in the end which makes the loop not perfect. >> > >> > Also, as soon as rubberband plugin is activated - the loop goes out of >> > sync >> > with the rest of the song even if I make no changes - there appears a >> > slight >> > pause before the loops starts to play. No such effect with AM >> > pitchshifter. >> > >> > Eventually, what I did was change the pitch of the loop 15 cents down by >> > means of the Pitch knob in the lmms instrument window. It worked, >> > although >> > did tune it down a bit, but hardly noticable. Of course, I would prefer >> > to >> > stretch a sample without shifting its pitch. >> > >> > So I have two questions. >> > >> > 1. Am I doing something wrong with Rubberband or is it really not that >> > top >> > notch? >> > 2. How much cents is 1 bpm? >> > >> > Louigi. >> > >> > ps: tried elastique stretching of the same sample in FL Studio. Although >> > nice result I did hear some slight artifacts. >> > >> > >> > ------------------------------------------------------------------------------ >> > The Planet: dedicated and managed hosting, cloud storage, colocation >> > Stay online with enterprise data centers and the best network in the >> > business >> > Choose flexible plans and management services without long-term >> > contracts >> > Personal 24x7 support from experience hosting pros just a phone call >> > away. >> > http://p.sf.net/sfu/theplanet-com >> > _______________________________________________ >> > Lmms-users mailing list >> > [email protected] >> > https://lists.sourceforge.net/lists/listinfo/lmms-users >> > >> > > > ------------------------------------------------------------------------------ The Planet: dedicated and managed hosting, cloud storage, colocation Stay online with enterprise data centers and the best network in the business Choose flexible plans and management services without long-term contracts Personal 24x7 support from experience hosting pros just a phone call away. http://p.sf.net/sfu/theplanet-com _______________________________________________ Lmms-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/lmms-users
