AEC | Double Talk | ERLE | G.168 | LEC | NLMS

> Hello. I need to produce an outline (top-level block diagram) design of
> conference telephone system such as those marketed by Polycom. How do I
> select the signal processing device and the algorithms? I need to
> consider only the speech signal processing aspects only. What will be
> the block diagrams. Main requirements are noise and echo cancellation.
>
> I am a postgrad student.

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