[Speex-dev] SPEEX on iPhone ?

Vincent Burel vincent.burel at vb-audio.com
Thu Nov 13 00:23:48 PST 2008


----- Original Message ----- 
From: "Conrad Parker" <conrad at metadecks.org>
To: "Vincent Burel" <vincent.burel at vb-audio.com>
Cc: "Jean-Marc Valin" <jean-marc.valin at usherbrooke.ca>; <speex-dev at xiph.org>
Sent: Thursday, November 13, 2008 1:18 AM
Subject: Re: [Speex-dev] SPEEX on iPhone ?


> 2008/11/13 Vincent Burel <vincent.burel at vb-audio.com>:
> > could you explain why 44.1kHz is *not* recommended with SPEEX ?
>
> my understanding is that the speex modes are tuned for particular
> sample rates, so using the 32kHz mode with 44.1kHz data will not yield
> as good quality as using the 32kHz mode with 32kHz data.

ok, it's strange, by nature, such compression algorithm are able to make
down or upsampling very well...
Do there is an impact on CPU load ?

Vincent



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