[TenTec] Questions about NR i.e. Orion

[Sinisa Hristov]

geraldj wrote:

> >          For the simple reason that DSP NR is
> > really a bandwidth-narrowing device.
 
> NOT AT ALL!


NR is an adaptive filter, and adaptive filter IS a filter,
its sole purpose being that of bandwidth reduction.

What makes is different from "ordinary" filters is the
adaptive method of tuning, and not the filtering action itself.


> All the good NR techniques use the high correlation of a desired signal
> and the relative lack of correlation of noise to discriminate between
> the two. At least that's what the books about NR that I've read said.

That describes the method of tuning, not the signal processing.
Once tuned ["adapted"], NR works just like any other filter.
Of course, it will automatically retune itself if/when needed.


73,

Sinisa  YT1NT, VE3EA