[sdiy] OOOOPS!!!! (Top octave CPLDs)

[Ken Stone]

The easiest way to generate saw is to use three or four levels of
sub-division, then sum them using simple weighted mixers. As such, his
suggested addition is exactly what you want.

Ken

>Hi Other Tim,
>
>Would it be possible to with the gates you have to generate and sum pulse
>waves of different duty cycles to approximate a saw wave? You'd need some
>post chip filtering depending on how close to a real saw you wanted to get,
>but I think it would be more versatile to have one octave of saw (easily
>converted to pulse or even tri) than 3 octaves of square.
>
>Also, are you going to offer your TOG for sale? Sounds like a fun chip.
>Might even make a few bucks. How about creating an adaptor socket to make it
>a drop in replacement for existing TOGs out there like the S50240?
>
>Okay, maybe I'm getting carried away here. Just a thought though...
>
>Tim Servo
>
>**************************
>> -----Original Message-----
>> From: Tim Ressel [mailto:madhun2001 at yahoo.com]
>> Sent: Wednesday, October 30, 2002 10:31 AM
>> To: synth-diy at dropmix.xs4all.nl
>> Subject: [sdiy] OOOOPS!!!! (Top octave CPLDs)
>> 
>> Sorry about that folks!  Was editing a message and hit
>> the wrong button.
>> 
>> I was taking a look at my TOG CPLD design and noticed
>> I have a few cells left in each chip. This is enough
>> to provide 2 dividers for each output note, so the
>> TOGs would provide 3 octaves of notes. Does this sound
>> right? Or is there something else I should use the
>> extra space for?
>> 
>> --TR
>> 
>> 
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>
>
>
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_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au  
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
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