[sdiy] RE: Re: [sdiy] analog pitch shifter circuit?

[Andreas Gaunitz]

I noticed in the specs that it can go up 1 octave, but only a third of 
an oct down. I wonder what would happen if you used 2 in a row, or used 
feedback...

-Andreas

-------------------------------------------------

2005 jan 04  kl. 00.03 skrev rdrake:

> as you say, probably very lo fi:
>
> http://www.j-tron.com/pom.htm
>
> but for $15, i'll probably give it a try.  hey, it's 2005: lo-fi is 
> the new black...
>
> lbd
>
>> From: <synthplayer88 at spymac.com>
>> To: <synth-diy at dropmix.xs4all.nl>
>> Sent: Monday, January 03, 2005 4:35 PM
>> Subject: [sdiy] analog pitch shifter circuit?
>>
>>
>> Hi guys,
>> I was wondering if anyone know how does the boss
>> voice transformer achieve
>> the
>> voice pitch shifting?
>> I would like to build an analog pitch shifter
>> does what the Boss voice
>> transformer do but I am not sure if that is an
>> analog circuit, since all
>> their
>> new pedals such as the  PS3 and PS5 are all
>> digital circuits.
>>
>> I came accross this chip that does pitch shifting
>> but only has preset
>> shift and 8
>> Khz sampling rate :(
>> which seems to be kinda lo fi...
>>
>>
>> http://www.holtek.com/english/docum/consumer/8950.h
>> tm
>>
>> Does anyone know of any monolithic IC that can do
>> what this IC does but
>> with more
>> flexibility? eg. allows precise pitch shift of
>> any notes up to serveral
>> octaves.
>>
>> Oh, please do not suggest any DSP or
>> uControllers. I would like to avoid
>> ANY
>> programming and looking for a simplest circuit to
>> do this if possible :)
>>
>> How can I apply FM into this? eg. multiply the
>> sound source by 2, 4, 8
>> hz.....
>> Can this be done?
>>
>> Thoughts?
>>
>>
>