[Speex-dev] NB decode in SB

Fritz Koenig
Mon, 20 Jun 2005 05:23:21 -0000

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@on2.com>:
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>
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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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