I think I have seen a paper about BBD emulations doing some kind of clever approximation to do this with no latency. Only in the downsampling direction of course. I have probably seen on the sources for the Chow BBD.No interpolation generally doesn't work on single sample rate output machines like our computers (certain vintage samplers had a DAC per voice, and DACs would be separately clocked to change the tuning of the sample, or something to that extent) without quite some DSP being involved. It is possible to use sinc interpolation as a per voice DAC emulator, which is exactly what the Wavetable oscillator in Surge is already doing (and this is also SC's default interpolation method IIRC).
The tracker thing is diferent. If my memory serves me right OpenMPT does it too, so it must be just taking a look at the sources. I guess it's just plain ZOH.
Statistics: Posted by rafa1981 — Sun Apr 14, 2024 5:24 am