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Old 11th April 2009   #33
seancostello
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Joined: Feb 2009
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Quote:
Originally Posted by Casey View Post
Yes, I think this is a way to look at it. In that each tap is really two taps next to each other.
How about taps not next to each other? Blesser mentions this in his book, page 269:

"Alternatively, any gain can be changed by slowly moving its value, which does not require interpolation. Typically, a randomizer gradually fades the gain of a path between two values, or reduces its gain to zero, moves the path, and then gradually increases the gain up to full value."

Also, why modulate the output taps, and not the ends of the combs? I would have thought that this would result in an overly chorused sound, but I haven't tried delay length interpolation of the output taps.

Dale: For random modulation, can you have the 9S08 change the frequency of the sine/triangle LFO to a random value + fixed offset every N samples? For the triangle LFO, this would produce a result similar to randi, the linearly interpolated low frequency noise generator found in most computer music languages since the 1960's. A sine LFO would be similar, but smoother. The random update of LFO frequency can happen at a VERY slow rate - 3 times a second has worked well for me in the past.

Nice thread. The fun little reverb project has gone from Schroeder 101 to some very cool concepts, in very easily digestible form.

Sean
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