[sdiy] converting white noise to pink noise

[Dave Manley]

It is probably worth mentioning that it is easy to derive the next state 
for an arbitrary shift.  You end up with specific functions per bit.  In 
hardware this allows shifts by N bits per clock, which can be very useful.

In software I guess you're stuck with iterating N times to get the Nth 
value, unless you had some special instructions that allowed bit selects 
without shifting/masking, or somehow made bit operations more efficient 
in some other way (multiple tapsmasks ANDed with current state combined 
with even/odd parity instructions?).

-Dave