[sdiy] reverb mad from multiple delays

[mark verbos]

I'm pretty sure the delays can't be equally spaced, without sounding  
like a flutter. I was figuring I'd need to have 8 delays with separate  
clocks to sound smooth at all. An EMT 250 is bigger than a Mac Pro  
tower, so it must have a lot of stuff in it!


Mark




On Oct 21, 2009, at 7:30 PM, Chris Muir wrote:

>
>
> I've done reverby things using the Eventide Orville that could be  
> done in hardware. Basically a handful of delay lines and a matrix  
> mixer gets you in the ball park, but the reverb-ness is _very_  
> sensitive to specific delay times and feedback settings from the  
> matrix mixer. Get some of those setting wrong, and it becomes a pile  
> of delays. If you're stuck with evenly spaced delays, I don't think  
> that you'll pull a good reverb out of it, but I've been surprised  
> before. Reverb is a black art.
>
> A few all pass filters & comb filter to smear things slightly help  
> immeasurably.
>
> - C
>
> On Oct 21, 2009, at 3:10 PM, mark verbos wrote:
>
>> Hi there,
>>
>>
>> I recently built a digital delay based on the Buchla 288. It has 8  
>> equally spaced delays, with individual outputs and sliders on the  
>> front panel. Some of the sounds I can get from this got me thinking  
>> about hardware reverb. I know that there was the 3011 BBD that was  
>> used to make reverb, but I think it could be done much better with  
>> digital techniques (of course I mean hardware digital, not the  
>> sensible DSP/micro solution ;). There was a guy from Chile who did  
>> something like this with 6 PT2399 chips and it sounded pretty good.  
>> I'd like to do something like that, but with control over everything.
>>
>> Does anyone have experience doing this and/or have documents from  
>> the old studio units that did it? I'm thinking it would help  
>> immensely to see schematics for the EMT 250, Eventide SP2016, AMS  
>> RMX and whatever other reverb units were being made before  
>> everything went software...
>>
>> Mark
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>>
>
> Chris Muir
> cbm at well.com	
> http://www.xfade.com
>
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