On 01/26/2010 05:09 AM, Louigi Verona 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. >
Hello Louigi, Did you also try to do it with Audacity? It has a Change Tempo option that uses SoundTouch. Never used it though and it's not available as a plugin as far as I know. Best, Jeremy ------------------------------------------------------------------------------ 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
