The FIR has 8 taps. It's enough to make a weak lowpass filter, which is fine for an echo/reverb sound. Useless if you're trying to do big filter sweeps or something like that (it just doesn't have much bandwidth to work with).

If you want to imitate an SNES echo, a regular delay unit with a small amount of lowpass is a pretty decent approximation. That should be close enough for its usual uses.

how small though.
i don't understand how impulse responses are recorded. couldn't it just be recorded from the output of the snes, and then plugged into freeverb or something ?

i found that one too. the smw preset is really cool, but methinks something is missing... wasnt there
somebody in one of the forums who worked on the og hardware for third party developers?

Hey guys I found it

http://www.secretmaryo.org/phpBB3/viewt … amp;t=5218

It's a really, really small FIR filter though. Not that powerful as a filter, but decent enough as a delay unit.

FIR: http://en.wikipedia.org/wiki/Finite_impulse_response
DOCS: http://emureview.ztnet.com/developerscorner/

This techy and tedious to filter out the info, though. I've had ok results by using a simple delay, short delay time, medium feedback, steep fall-off, pingpong stereo.

The SNES has a simple DSP for audio processing, AFAIK, so it needn't use multiple channels -- it processes bare audio data through some hardware that I guess is just a sequence of simple programmable filters and delays

8 tap FIR, i have no idea what that means yet either.

i found this, http://www.secretmaryo.org/phpBB3/viewt … amp;t=5218

I remember something about a FIR filter.  I have no idea what that means, yet.

It definitely uses multiple channels - but this has always been kind of a mystery to me too. Probably just a very fast delay rotating through multiple channels.

i started messing around with snes music for the 1st time a couple days ago so i dunno how much help i can be, but what program/plugins you using?. i used the waves reverb plugin in modplug and after messing with the settings i was able to get a sound that was pretty darn close. some channels will sound better with not quite as much reverb (ie bass and drums most likely), but that's all a matter of preference i suppose. as to whether its monophonic...not sure but i don't think it is...

right, but is the echo monophonic?

best bet would probably be a delay set to 0% feedback (which should make it only echo once) and mess around with the wet/dry levels.

i know its an old topic, but i cant find an accurate way to imitate
"snesverb". i imagine some imoulse response could work. generally
i use soundfonts with an echo effect, but it doesnt seem to represent
the sound very well.