Elektron Musical Instruments

On Thu, 27 Apr 2006 21:05:40 +0300, daniel_elektron <daniel@...>  
wrote:

>> but SRR isn't alias-free either.
>
> No, the whole point with SRR is to introduce aliasing. Alias free SRR
> would just simply be a low pass filter, right?

Well, yes and no. Normally you would apply alias-filter *before* the  
decimation (the actual SRR), but you can also apply it afterwards. For  
example, if I have a rapid sin wave, it turns into random-like square wave  
with large amount of SRR. But the result is aliased, the square wave is  
not bandwidth-limited if the playback is not interpolated in anyway. Same  
with the bit-depth reduction. So doing the SRR in high sampling rate and  
with aliasing filter afterwards ensures alias-free waveform. May sound  
stupid as the whole meaning of the SRR is to degrade the quality of the  
signal. But there is a small difference nonetheless :)

In fact, I take my words back. It would take more inspection to tell  
whether the result in MM's SRR produces aliased waveforms or not. And it  
isn't probably even worth it.

Btw, daniel. Can you comment on my question about the lfos with hold?...

Cheers,
Sampsa