[sdiy] Re: FS: CEM3396 voice chip $10

[Tom Wiltshire]

Scott's right, it does need a CV as well. Hence they called it a "uP  
controllable waveform convertor" - you need a uP to ensure that the  
CV and the frequency pulses are coherent. It is basically a DCO  
waveshaper with bells and whistles.

One thing I love about the Curtis chips is that they always seem to  
include filter FM. Doug Curtis must have been a fan!

T.

On 31 May 2009, at 04:34, Scott Nordlund wrote:

>
> I believe that (like other "clock pulse and integrator" style DCOs)  
> it needs a control voltage as well.
>
> ----------------------------------------
>> From: subjectivity at hotmail.com
>> To: danjel at gmail.com; synth-diy at dropmix.xs4all.nl
>> Subject: RE: [sdiy] Re: FS: CEM3396 voice chip $10
>> Date: Sun, 31 May 2009 00:44:30 +0000
>> CC:
>>
>>
>>
>>
>>
>> so i am a bit late on this but after reading the data sheet this  
>> chip sounds pretty cool.
>>
>> am i correct in thinking that all it needs is a square wave or  
>> clock coming in and you get out a filtered waveshape? does it have  
>> to be controlled entirely with logic or can you use pots?
>>
>> i would love to find a way to do this to a square wave without the  
>> chip BUT have never found a way to do so. (a square to saw converter)
>>
>> anybody know of a source for these chips?
>>
>> thanks
>>
>>
>>
>>
>>
>> ----------------------------------------
>>> Date: Sat, 30 May 2009 13:45:28 -0700
>>> From: danjel at gmail.com
>>> To: analogue at hyperreal.org; synth-diy at dropmix.xs4all.nl
>>> CC:
>>> Subject: [sdiy] Re: FS: CEM3396 voice chip $10
>>>
>>> SOLD!
>>>
>>> cheers,
>>> Danjel
>>>
>>>
>>>
>>>
>>>
>>> On Fri, May 29, 2009 at 5:47 PM, Danjel van Tijn wrote:
>>>> I have a narrow body CEM3396 lying around. These typically sell for
>>>> $20, I paid $15 for and I will sell it for $10 (shipping included).
>>>>
>>>>
>>>> cheers,
>>>> Danjel
>>>>
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