[sdiy] Can google's free* 180nm OSHW foundry be used for synth parts?

Tom Wiltshire tom at electricdruid.net
Sat Aug 6 17:16:14 CEST 2022


I don't know of any that do.

The Rev.3 Prophet uses different noise sources for the wheel mod pink noise and the white noise for the voices, which is interesting. This is a difference from the Rev.2, which splits a single source to do both jobs, so it was something that someone thought was a worthwhile improvement.

Tom


> On 6 Aug 2022, at 16:11, grant musictechnologiesgroup.com <grant at musictechnologiesgroup.com> wrote:
> 
> 
> Your response was not unexpected! Do any hardware synths have polyphonic noise? 
> 
> ------ Original Message ------
> From: "Tom Wiltshire" <tom at electricdruid.net <mailto:tom at electricdruid.net>>
> To: "Peter Pearson" <electrocontinuo at gmail.com <mailto:electrocontinuo at gmail.com>>
> Cc: "synth-diy" <Synth-diy at synth-diy.org <mailto:Synth-diy at synth-diy.org>>
> Sent: 8/6/2022 6:38:34 AM
> Subject: Re: [sdiy] Can google's free* 180nm OSHW foundry be used for synth parts?
> 
>> Looks like a noise generator to me!!
>> 
>>> On 5 Aug 2022, at 19:44, Peter Pearson via Synth-diy <synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org>> wrote:
>>> 
>>> What are you going to make with 64 OTAs on a chip?  Just curious.

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