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Re: [Discuss-gnuradio] DV Dongle - AMBE USB Device

From: Jeff Brower
Subject: Re: [Discuss-gnuradio] DV Dongle - AMBE USB Device
Date: Thu, 20 Mar 2008 07:32:59 -0600


> > Is this a DVSI licensed and publically available closed source module
> > or something "unofficial" or not generally available to the world at
> > large ? It has obviously long been possible to recode some reverse
> > engineered DSP chip based IMBE implemenation into C++ source code for
> > Wintel/Unix/BSD use, but this would not be free of license and patent
> > issues... and could not be made part of an open sourced project or
> > product without a DVSI deal (and it appears they don't see this as in
> > their interest).
> Reverse engineering - at least for two common IMBE variants (P25 and
> MA/COM's ProVoice) - isn't necessary. Both algorithms are published by
> DVSI through the TIA.

Are these publications actual C code, along with input/output test vectors that 
be used to verify bit-exact performance of a software implementation?

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