Patent violations?!

[James Damewood]

Is that the circuit with HPF with some clipping (distortion) and mixed back
with the original signal?

Jimbob


----- Original Message -----
From: "Paul Perry" <pfperry at melbpc.org.au>
To: <ryckebu at ersg.san.mrms.navy.mil>
Cc: <synth-diy at node12b53.a2000.nl>
Sent: Wednesday, May 10, 2000 9:31 PM
Subject: Re: Patent violations?!


> At 12:18 PM 11/05/00 -0700, you wrote:
> >I published the "build a ten dollar harmonic sweetener" in Electronic
> Musician in
> >1987. Technically it close enough to the Aphex Aural Exicter
>
> Can you remember the date on the AExiter patent?
> Maybe we cd all go into production on the date it lapses!
>
> And, what was the actual claim of the patent?
> A friend did some work building a version of this & concluded that the
> key, in a practical sense, was in recombining the distorted & original
> signals so
> that there was no cancellation. Which requires some tricky phase shifting.
> But, if it is done in DSP, it is much easier.
> Although as Jules showed, you can get something useful for $10.
>
> paul perry melbournhe australia
> BTW since in Western law the opposing parties are supported by two lawyers
> each of whom say the law supports their own side, the sum knowledge of
> lawyers is zero.
>