On Tue, 26 Jul 2016 22:02:42 -0300
John Coppens <john@jcoppens.com> wrote:

>  *I KNOW I have the Appnote here somewhere. Can't find it though.

Found the exact appnote - it's Motorola's AN-315:
"A low frequency waveform synthesizer based on Walsh functions"
Prepared by Robin Hodgson (1974).

I couldn't find it on the 'net yet. If someone is interested -
I may have a scanned copy here somewhere.

John
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