[Speex-dev] NB decode in SB

[Jean-Marc Valin]

Why not add a bit of signalling? I'm still not sure I understand your
exact question. The narrowband decoder does not know the whether it's
getting called by the wideband decoder. However, given the bit-stream,
it's possible to know whether it has wideband info without decoding.
Does that answer?

	Jean-Marc

Le lundi 20 juin 2005 à 08:23 -0400, Fritz Koenig a écrit : 
> Because a wideband signal has both a narrowband part and a wideband part 
> the first part of the wideband decode is to call the narrowband decode.  
> In the fixed point version the signal generated from the narrowband 
> decode is downshifted at the end.  In this same version the wideband 
> then upshifts the signal by the same amount.
> 
>  I would like to do away with the downshift on the narrowband side and 
> the upshift on the wideband side and just past the decoded signal 
> through.  To do this and allow for the decoding of narrowband only 
> signals I need to detect who the calling function is to the narrowband 
> decode. 
> 
> What I was wondering is if there was already a member variable that held 
> the current decode state.
> 
> -Fritz
> 
> Jean-Marc Valin wrote:
> 
> >Could you explain a bit more what your question is?
> >
> >    Jean-Marc
> >
> >Selon Fritz Koenig <fkoenig at on2.com>:
> >
> >  
> >
> >>Is there a way to tell during the NB decode if it was kicked off by the
> >>SB decode?  I would like to avoid saturating and packing the output of
> >>the NB decode, only to unpack it for the SB.
> >>
> >>Thanks.
> >>
> >>-Fritz
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> >>
> >>
> >>    
> >>
> >
> >
> >
> >  
> >
> 
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