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

[anthony]

I have a couple of child's toys that I'm sure use this chip. It's epoxied 
over on the board
but the way it sounds is exactly how you might think. Great way to annoy Mom 
(my
daughter's /and/ mine...) Big fun.

I've been meaning to try to tweak them a bit and get more variety out of the
effects, but I don't think it's a go.


Maybe even useful.
----- Original Message ----- 
From: "rdrake" <rdrake at data2action.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Monday, January 03, 2005 6:03 PM
Subject: [sdiy] RE: Re: [sdiy] analog pitch shifter circuit?


> 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?
>>
>>
>