Tutorials and Topics - Peabody Computer Music

Tutorial 26Frequency domain signalprocessing using pfft~Let’s take a look at the parent patch for the above phase vocoder subpatch (calledmypvoc~):Wrapper for mypvocNotice that we’re using a phasor~ object with a snapshot~ object in order to generate aramp specifying the read location inside our subpatch. We could also use a line object, oreven a slider, if we wanted to “scrub” our analysis frames by hand. Our main patch allowsus to change the playback rate for a loop of our analysis data. We can also specify the loopsize and an offset into our collection of analysis frames in order to loop a given section ofanalysis data at a given playback rate. You’ll notice that changing the playback rate does218