Hallo, GÃŒn KARAGÃZ hat gesagt: // GÃŒn KARAGÃZ wrote:
I have created frames database in Matlab. I get IR and button data of Wiimote to control overlap-add period. I want to realize Time Domain Pitch Synchronous OverLap Add (TD-PSOLA) algorithm in pd
I will get overlap period data from Wiimote IR data.
For example, I have four frames. All 4 frames have different T0(period) values. When I put it them in order, I decide by Wiimote data which frames will be mixed by position. And also Wiimote data gives me the T0(period) of TD-PSOLA.
e.g. T01=100, T02=300, T03=650, T04=900 wiimoteData= 250 newFrame=((300-250)*frame1+(250-100)*frame2)/(200) olaPeriod= wiimoteData=250
newFrame continously overlap-add synthesized by olaPeriod. As the wiimoteData changes, calculation of newFrame is done again. newFrame is sent to DAC.
The problem is how can I do overlapAdd syhthesis in Pd?
I think, what you try to do here is described in Miller's book as an overlapping sampler. You will need to do some number mangling, but the general principle is in Chapter 2 of it: http://crca.ucsd.edu/~msp/techniques/latest/book-html/node26.html
So basically you just generate several phase shifted phasor signals from a single [phasor~] object using multiplication and [wrap~] (the "overlap" step) and use these to look up the windowing signals and the source signals from some tables, then add these signals again by simply using [+~] (the "add" step).
Ciao
Frank