[sdiy] Roland CR-8000 drum voices

[Adam Inglis]

> On 6 Jun 2017, at 11:10 PM, Richie Burnett <rburnett at richieburnett.co.uk> wrote:
> I remember discussions about one of the snare drum body partials sounding so quietly that it was almost inaudible too.
> 


Ah! I had forgotten about that. This was over two years ago (obviously a few things got in the way of completing this project!).
I think I must have made some audio probe recordings at different parts of the circuit. I think the snare is made up of two bridged-T oscillators plus some noise, but one of those oscillators is mixed so low you would hardly know it was there. I don’t recall there being a trim pot on this part of the circuit so Roland’s engineers must have had their reasons for putting it there...



AI

> 
> 
> -----Original Message----- From: Adam Inglis
> Sent: Tuesday, June 06, 2017 6:50 AM
> To: SDIY List
> Subject: [sdiy] Roland CR-8000 drum voices
> 
> Up on my blog is a little look at this thing. The quirks of the voices were revealed once I had installed an Elby midi-to-trgger unit, that allows midi velocity to control trigger amplitude. There are some schematic snippets and audio examples. I must thank Richie Burnett of this list for taking the time to explain the genius behind some of these circuits - maximum effect with minimum parts!
> 
> Corrections of course welcome
> 
> AI
> 
> http://mezzoauto.blogspot.com.au
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