[Speex-dev] NB decode in SB

[Fritz Koenig]

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>:
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>>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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