[asterisk-users] The High Performance Echo Canceller (HPEC)

shadowym shadowym at hotmail.com
Wed Feb 14 16:00:13 MST 2007


Think of what you just said.  You just said a "Central Processing Unit" is
an "Application Specific Integrated Circuit".

If you say so.....LOL!

-----Original Message-----
From: Andrew Kohlsmith [mailto:akohlsmith-asterisk at benshaw.com] 
Sent: Wednesday, February 14, 2007 12:26 PM
To: asterisk-users at lists.digium.com
Subject: Re: [asterisk-users] The High Performance Echo Canceller (HPEC)

On Wednesday 14 February 2007 11:17 am, shadowym wrote:
> I gotta take issue with your comments that a HWEC is just software 
> running on a DSP.  In the case of Octasic, it's an ASIC.  How it does 
> EC is VERY different because.....it's done completely in hardware, not 
> firmware loaded into memory and run on a specialized CPU!  Yes, the 
> ASIC does contain an DSP but it is customized for EC.  You cannot think of
it as a CPU.

Why not?  A DSP is a CPU which has been designed to do mathematical
functions very quickly, generally especially with respect to matrix math.

I mean think of what you just said.  You could just as easily have said "A
CPU ... it's an ASIC.  Everything it does is completely in hardware."

-A.




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