[Speex-dev] Quick survey for Speex 1.2

lianghu xu lianghu.xu at gmail.com
Tue Nov 14 21:16:59 PST 2006


How about the voice quality of narrowband decoder when it is used to decoder
wideband?
I think it will be worse than wideband decoder. Thus, an indicator is needed
here.

The current RTP profile draft is not clear on that.

Lianghu

On 11/15/06, Jean-Marc Valin <jean-marc.valin at usherbrooke.ca> wrote:
>
> > I think that one got me too. If mode is detected automatically by the
> > decoder, what is the purpose of the 'mode' parameter in
> > speex_decoder_init function?
>
> Well, the mode there is just for narrowband vs wideband. While the
> narrowband decoder can still decode wideband, it would leave out the
> high frequencies.
>
>         Jean-Marc
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