Transposed filters have identical transfer functions, but differ in terms of rounding noise and coefficient quantization.
In case of nonlinearities, it’s difficult. A typical non-linearity is the Diode circuitry to “un-damp” the filter, which can be seen as a voltage dependent voltage divider. In the original arrangement, like the SEM filter, it depends on the BP out, but if you transpose it, this output is lost. I’m not sure, if you get the same properties distortion wise after transposition. However, the analog input mixing filters will sound differently from a standard SVF, too. Steffan > On 06.01.2015|KW2, at 14:40, Vadim Zavalishin > <vadim.zavalis...@native-instruments.de> wrote: > > (although I'm not sure, whether their transposed version is not identical to > the original ;-) ). > > Things can get less straightforward, once nonlinearities are involved. -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp
