[sdiy] IR Reverb

Mike Beauchamp list at mikebeauchamp.com
Wed Feb 21 00:35:07 CET 2018

I've been looking at convolution and impulse response effects and 
interested in trying a few ideas out to maybe incorporate into future 
products. Is anyone comfortable with programming this and speccing out 
the required hardware (digital isn't my forte)?


On 02/15/2018 02:42 AM, Tim Ressel wrote:
> (note: laughter is understandable and probably mandatory)
> So I just did a cannonball into the murky waters of impulse response 
> reverb. My tenuous grasp of DSP coupled with my sketchy math skills is 
> making this, well, interesting. So far I have acquainted myself with 
> linear convolution, which looks suspiciously like an FIR. Since it says 
> "impulse response" on the box, that seemed to make sense. But then I 
> stepped back and tried to imagine a reverb system as I understand it and 
> got confused.
> Reverbs have two things going on: time delay and filtering. The time 
> component gives the reverb time and overall thickness of the reverb, 
> while the filtering can make the effect warmer or colder (yes, 
> oversimplified). So I am guessing the impulse response is a room 
> characterization used to color a reverb. However that seems incomplete. 
> Unless the impulse response is really long or is sets of impulse 
> responses over time.
> I suspect that gurgling sound is me in over my head.

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