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

Hi:

I am trying to make a composite source signal for test a echo
canceler, but i can understand a some thinks.
In the G.168 are defined the expresion for pseudo noise signal (G.168
Page 53 C.3-1), but I don't know

what are the values for W(k)? Thanks in advance
Jeronimo




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jfa47 wrote:

>Hi:
>
>I am trying to make a composite source signal for test a echo
>canceler, but i can understand a some thinks.
>In the G.168 are defined the expresion for pseudo noise signal (G.168
>Page 53 C.3-1), but I don't know
>
>what are the values for W(k)? >Thanks in advance
>Jeronimo >
What is unclear about:

"Each value W(k) (before filtering) is 152 680. It is calculated such that levels within a bandwidth of 20 kHz are the same for the voiced signal and the
PN sequence."

Steve



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What is "152 680"? Is it 152680? or is it 152.680? (both don't seem 
reasonable).

Could someone please clarify this issue?

Thanks,
Roee
--- In e...@yahoogroups.com, Steve Underwood <steveu@...> 
wrote:
>
> jfa47 wrote:
> 
> >Hi:
> >
> >I am trying to make a composite source signal for test a echo
> >canceler, but i can understand a some thinks.
> >In the G.168 are defined the expresion for pseudo noise signal 
(G.168
> >Page 53 C.3-1), but I don't know 
> >
> >what are the values for W(k)?
> >
> >
> >Thanks in advance 
> >Jeronimo
> >
> >  
> >
> What is unclear about:
> 
> "Each value W(k) (before filtering) is 152 680. It is calculated 
such that levels within a bandwidth of 20 kHz are the same for the 
voiced signal and the
> PN sequence."
> 
> Steve
>

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