[sdiy] quantizer questions..(Ray Wilson model just built)

[Dan Snazelle]

ok

i am only getting 4 distinct voltages when i turn the pot.
i tried calibrating but this changed nothing.

could i be stuck in 4ths mode?

is there a JUMPER ON THE BOARD I COULD HAVE MISSED? (IS that one near the tl071??)

thanks


those samples really helped!!

thanks all

--------------------------------------------
check out various dan music at:

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


> From: raywilson at comcast.net
> To: raywilson at comcast.net; subjectivity at hotmail.com; pfperry at melbpc.org.au; synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] quantizer questions..(Ray Wilson model just built)
> Date: Sun, 21 Sep 2008 10:52:08 -0600
>
> Samples are now on the web page for the Quantizer (YouTube is on the way).
>
> Cheers
>
> ----- Original Message -----
> From: "Ray Wilson" 
> To: "Dan Snazelle" ; "Paul Perry"
> ; 
> Sent: Sunday, September 21, 2008 8:12 AM
> Subject: Re: [sdiy] quantizer questions..(Ray Wilson model just built)
>
>
>> The Voltage Quantizer's initial voltage pot is similar to what Paul
>> suggested. If you just connect the quantizer's output to a VCO for example
>> and adjust the initial voltage pot from low to high you will hear the
>> effect of the quantization on the voltage coming from the pot (which is
>> wired as a variable voltage divider). So in 1/2 step mode you will hear
>> the oscillator rise in pitch in discrete 1/2 step intervals. When I refer
>> to half step I mean C, C#, D, D#, E, F, F#... etc. Whole steps would be:
>> C, D, E, F#, G#, A#, C... etc. Fourths mode would be: C, E, G#, C... etc.
>> The switches for 1/2 step, whole step, and fourths act immediately because
>> they change the configuration of the output D to A. The quantizer is meant
>> to follow voltages changes in the range of very low frequency to about 400
>> HZ. For example a sequencer running a sequence is typically about 2 or
>> three notes a second. A S&H is similar but sometimes up to 10 to 20 notes
>> a second. Once you start putting audible frequencies into the input the
>> output starts to become more wave like (still consisting of discrete
>> samples of the input but more cyclic in nature). So ideally if you want
>> the effect of random notes from the 12 tone scale (or whole or fourth note
>> scales) you want your S&H or sequencer to be changing at a rate that is
>> sub audible (20 HZ or less). You also need to make sure the input voltage
>> is in the range of 0 to +7 volts. Negative voltages will not be quantized
>> and the unit will simply output it's lowest voltage. (.08333 in 1/2 step
>> mode, 0 in other modes).
>>
>> You won't hurt the unit by applying out of range synth level voltages.
>> (e.g. -10V to +10V). The unit quantizes voltages in the range of 0 to
>> about 7 volts. It will not quantize negative voltages. So be sure to apply
>> offset to the signal being fed in to bring it into the 0 to +7V range.
>>
>> Cheers and good quantizing.
>>
>> Ray
>>
>>
>>
>> ----- Original Message -----
>> From: "Dan Snazelle" 
>> To: "Paul Perry" ; 
>> Sent: Sunday, September 21, 2008 5:08 AM
>> Subject: RE: [sdiy] quantizer questions..(Ray Wilson model just built)
>>
>>
>>>
>>> by complexity, what i meant was this. into a 1/voct input i would put
>>> something in that i was sure would trigger it. (a signal with peaks and
>>> valleys) and it would just put out one or two notes. annoying as hell.
>>>
>>> then as i said i tried the linear input..wow
>>>
>>>
>>> i assume its made to work with linear inputs...i didnt do anything wrong
>>> now did I?
>>>
>>> thanks for the help.
>>>
>>>
>>>
>>> --------------------------------------------
>>> check out various dan music at:
>>>
>>> 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
>>>
>>>
>>>> From: pfperry at melbpc.org.au
>>>> To: synth-diy at dropmix.xs4all.nl
>>>> Subject: RE: [sdiy] quantizer questions..(Ray Wilson model just built)
>>>> Date: Sun, 21 Sep 2008 17:16:44 +1000
>>>>
>>>> More simply, the input signal may not be covering the entire range.
>>>>
>>>> As for complexity..
>>>> The output from a quantizer is going to be LESS complex thatn the input,
>>>> because while the input signal can have any voltage over a range, the
>>>> quantizer has only a limited number of defined voltages outout - that is
>>>> what a quantizer is!
>>>>
>>>> The point to doing quantizing, is to turn a continuous varying signal
>>>> into a
>>>> series of notes. It seems as though it is doing that, allright.
>>>>
>>>> I'd make a "test voltage" from a 9v battery and a pot, so I could dial
>>>> from
>>>> 0 to +9V, you should get the full range of notes from 0 to 6V, then just
>>>> the
>>>> highest.
>>>>
>>>> Mind you, I haven't built one yet..
>>>>
>>>> paul perry melbourne Australia
>>>>
>>>>
>>>>
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