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[Speech-reco] Re: Can I copy this code directly?

From: Bill Cox
Subject: [Speech-reco] Re: Can I copy this code directly?
Date: Thu, 14 Oct 2010 09:50:56 -0400

Oops!  Wrong patent!  The patent I meant to talk about is this one:


The other one is not very interesting to me.


On Thu, Oct 14, 2010 at 8:51 AM, Bill Cox <address@hidden> wrote:
> I think the technology in this patent rocks:
> http://www.freepatentsonline.com/5012518.html
> In 1978, this guy compressed speech to the most important 4 formants
> (poles), plus a second order correction polynomial.  It's based on the
> same technology I've been playing with, LPC.  He even does what I
> wanted to do, making traces of formant movement over time.  The patent
> has expired, which means I can duplicate as much of this work as I
> like for free.  Even better, the patent includes an Apendix A, which
> is the entire Fortran source code for the algorithm.  I see no
> copyright notice on the code.
> So, am I actually allowed to copy the Fortran code directly?  Doesn't
> putting it in a patent application with no copyright notice place it
> into the public domain?  Too bad we don't have blind lawyers on the
> list!
> Bill

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