I played with minBLEPs about 15 years ago, and came to the same conclusion that I’ve seen many others come to over the years: there’s no significant advantage to minimum phase in typical synth use. Mainly, you need to have some delay to line up a minBLEP, and there’s no tangible downside to having a little more delay to align a symmetrical BLEP, and the latter is more convenient.
I would worry about the difference with non-linear processing exactly as much as you worry about filter phase characteristics when using filters ahead of non-linear processes—which is to say, typically not at all. ;-) > On Dec 3, 2017, at 4:23 AM, Stefan Westerfeld <ste...@space.twc.de> wrote: > > Hi! > > I'm working on a minBLEP based oscillator. This means that my output signal > will contain all ripple needed for bandlimiting the output after each step. > > Other methods of generating bandlimited signals, for instance interpolation in > an oversampled table will produce half of the ripple before and half of the > ripple after each step. In frequency domain, both are equally valid results, > that is, the frequencies contained in a minBLEP and those for other methods > are > exactly the same, given similar filter desgin contstraints. > > However, I have a vague idea that this is not all there is to know about the > quality. For instance, what happens if I apply a non linear effect such as > distortion after producing my signal. It could be that one of the two ways of > introducing ripple in the oscillator would produce better results when > combined > with such an effect. > > I already know that the minBLEP provides a faster reaction for input from > outside, for instance resetting the phase will be quicker if all ripple is > introduced afterwards, but for my application that doesn't matter much. But if > the time signal of one of the two methods would produce better results when > using effects, this would matter to me. So are there advantages/disadvantages > for each method? > > Cu... Stefan > -- > Stefan Westerfeld, http://space.twc.de/~stefan > _______________________________________________ > dupswapdrop: music-dsp mailing list > music-dsp@music.columbia.edu > https://lists.columbia.edu/mailman/listinfo/music-dsp > _______________________________________________ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
