Hallo, Matteo Sisti Sette hat gesagt: // Matteo Sisti Sette wrote: > Frank Barknecht wrote: > > >> 4. Simply using a vline~ object and ?loop it? with a different > >> start position the second time onwards. > > >I'd simply do 4). > > That's ok if you're not gonna change the pitch while playing the sample.
Yes, my suggestion is for a one-shot sampler with a looping end and constant pitch. > Suppose for a moment that you don't need a sample start point different from > the loop start point, i.e. the begin and end point don't change from the > first to the second time. > The phasor solution (which is trivial in this case) allows you to have a > signal as an input to the phasor, thus allowing to change the pitch of the > sampler in real time and smoothly. This is not possible (afaics) with the > vline~ solution. For one-shot sampler phasor~ is not good IMO because of the quantiztion of the phase-inlet. phasor~ samplers would be terrible for drum-samplers. Also because of the phasor~ quantization it's hard to start playing with vline~ and then switch to looping phasor, unless you do a crossfade. (But a crossfade would work.) > One solution for reproducing a sample with a signal pitch input without > using a phasor is: > > (input pitch ~) > | > [rpole 1] > | > [tabread4~] > > (sending a [clear( to the rpole when starting playing) Puh, wouldn't [rpole~ 1] maybe be dangerous? Anyway I don't see any advantage in rpole~ over phasor~. > However, the only way I can think of in order to switch from this to the > phasor (or to jump to a given point of the sample) at the correct time > independently of pitch history, is to use a [threshold~]; but that wouldn't > be accurate because it's block-quantized. > > Any other idea? > > > Hey!!! I just had one. But I would like anybody to suggest a simpler or more > elegant one. > > I may use 2 phasors (or an rpole and a phasor), both fed with the same pitch > input. > > Let's suppose this is the sample: > |-----SS-----LB-----LE------| > where: > SS= sample start (where we want the sample to start playing the first time) > LB= loop begin > LE= loop end > > With appropriate calculations, the two phasors can be adjusted so that: > 1) Phasor A reproduces the sample the first time from SS to LE in its first > cycle. In subsequent cycles it would do the same but it will be muted so we > don't mind. > 2) Phasor B reproduces the loop region; its initial phase is calculated in > such a way that at the beginning, when it is muted, it will be producing > garbage, but when phasor A will reach point LB for the first time, phasor B > will also be on LB, so that, during ONE cycle of phasor B, the two phasors > will be reproducing *exactly* the same portion LB-LE synchronously. Show us the code! ;) This may work, but indeed would be very complicated. Also I assume, that changing the frequency of the phasor~ before you've reached the loop area would completely mess up the caluclations of phase and/or frequency of the second phasor~, especially as you can only set the phase of a phasor~ once every block. > Any simpler idea? susloop~ Ciao -- Frank Barknecht _ ______footils.org_ __goto10.org__ _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
