[sdiy] Syncable digital noise source.

[Tom Wiltshire]

Hi all,

I mentioned the noise source on the Nord Lead 2 a couple of weeks  
ago . This allows you to reset the LFSR to a known start state. This  
means you can sync the noise to an oscillator. According to Clavia, a  
given LFSR sequence gives fixed formants in the frequency response.  
They've got a nice diagram of it on page 40 of the manual (http:// 
www.clavia.se/products/manuals.htm).

Anyway, since then, I've tried putting a reset input on my PIC noise  
source. Then I fed a squarewave from an SH101 into the reset input.  
The result was not worth the limited effort, in my opinion. Whilst  
the formant-shaping produces noise with certain "flavours", it didn't  
produce much that sounded good to my ears. Obviously you can start  
the LFSR in many different places and get many different flavours, so  
perhaps I didn't explore enough. I wasn't encouraged to by the  
results I got. The sound isn't pitched enough to be really useful,  
and as unpitched noise goes, pure white or pink have a smoother  
quality whilst the synced noise often sounded "spattery" and uneven.

Does anyone have a Nord Lead 2? Do you use the sync'ed noise much? Do  
you like the sound? Is this a simply aesthetic dislike on my part or  
does it just sound nasty?!

Thanks,
Tom