[sdiy] Ray Wilson's MFOS Quantizer PCB

[Dan Snazelle]

YIPEE

just ordered one!!

if its a good one, i might order a few more

thanks so much, MANY OF US have been begging for a simple, cheap, quantizer.




--------------------------------------------
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http://www.myspace.com/lossnyc


http://www.soundclick.com/lossnyc.htm


http://www.indie911.com/dan-snazelle
(or for techno) http://www.myspace.com/snazelle


> Date: Sun, 7 Sep 2008 22:46:58 -0700
> From: djthomaswhite at yahoo.com
> To: synth-diy at dropmix.xs4all.nl; mfos at yahoogroups.com
> CC:
> Subject: [sdiy] Ray Wilson's MFOS Quantizer PCB
>
> Ray has a new module up. It is a simplified quantizer
> available as a PCB for $17 US. Check it out at his
> website:
>
> http://www.musicfromouterspace.com/analogsynth/VOLTAGEQUANTIZER/VOLTAGEQUANTIZER.php
>
> Here are some details:
>
> MFOS Voltage Quantizer (+/-12V to +/-15V)
> Article by Ray Wilson
> Back to "Music From Outer Space" Analog Synth Pages
>
> Features
>
> * Converts continuous voltage input to discrete
> .0833 voltage steps.
> * Also provides whole step and fourths mode
> (.1666V and .3332V steps).
> * Low cost parts used in the A/D and D/A circuits.
> * Adds 12 tone (or whole or fourth tone) musical
> dimension to S&H outputs.
> * Eases sequencer set up by correcting notes to
> discrete steps.
> * Conversion time varies from sub millisecond to
> 1.26 millisecond (full count)
> * This thing is pretty darn fun!
>
> Possible Quirks
>
> * Never let it be said that you won't find a
> voltage that causes inter-count jitter.
> * Minimal chatter on step change with slowly
> changing input voltage.
>
> Introduction
> A voltage quantizer takes a continuously variable
> input voltage and outputs a stepped (or quantized)
> voltage. Whereas the input voltage might ramp up from
> 0 to 1V continuously the output voltage of the
> quantizer will be discrete steps of .083V. In normal
> mode this quantizer always starts at digital 1 or
> .083V. As the input voltage starts to ramp from 0 up
> to 1 volt the output will step to .1666V, .2499,
> .3332, etc up to 1.0V. The circuit also features a
> whole step mode in which the in to out conversion is
> quantizd to steps of .1666V. It also features a fourth
> step mode in which the in to out conversion is
> quantizd to steps of .3332V. Useful with sample and
> hold circuits to bring voltages into musical scale
> steps (half, whole or fourths). Useful with sequencers
> to bring voltages into musical scale steps (half,
> whole or fourths).
>
> Thomas White
> Natural Rhythm
> www.naturalrhythmmusic.com
>
>
>
>
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