[sdiy] probably a simple analog patch question

[Scott Gravenhorst]

Dave Kendall <davekendall at ntlworld.com> wrote:
>Hi Scott.
>
>I'd try with a bandpass VCF that tracks at 1V/octave, drive it with KEY  
>CV, and use resonance on the VCF to set how "tuned" the result is.

Thanks, that's what I was thinking to try next.  

What I have now works mostly, white noise -> LPF -> cv in of VCO, but it has a sort of
grumbly character along with the "fuzzy" sound and I'd like to eliminate the grumble
character and have just the soft "fuzzy" sort of sound.  I could try to use BPF instead
of LPF for the modulated VCO thing 

OR 

BPF as you describe above with reasonably high rez where Fc sets the pitch...


>cheers,
>Dave
>On Feb 1, 2011, at 19:05, Scott Gravenhorst wrote:
>
>> Can someone please describe how one patches (on an analog synth) tonal  
>> or
>> pitched noise?  That is, noise the seems to have a defined musical  
>> pitch.
>>
>> Can it be done with a VCO that is pitch modulated by noise?
>>
>> If so, is the noise to be filtered before modulating the VCO?
>>
>> And if filtered, lp, bp, hp?
>>
>> OR is it done some other way entirely? (such as bp filtering white  
>> noise
>> and using Fc to set the pitch)
>>
>> Thanks...
>>
>> -- ScottG
>> _______________________________________________________________________ 
>> _
>> -- Scott Gravenhorst
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>

-- ScottG
________________________________________________________________________
-- Scott Gravenhorst
-- FPGA MIDI Synthesizer Information: home1.gte.net/res0658s/FPGA_synth/
-- FatMan: home1.gte.net/res0658s/fatman/
-- NonFatMan: home1.gte.net/res0658s/electronics/
-- When the going gets tough, the tough use the command line.