[speex-dev] sampling rate

Ryan dl ryandl2003 at yahoo.com
Tue Oct 22 18:29:38 PDT 2002

It seems to work ok with the same audible quality as a
standard sampling rate. Is there any way to test this?
Will superimposing an inverse wave over the origional
produce a meaningfull result? Thanks for your time,

Ryan de Leeuw

<p><p>>Sorry for the delay. I've been doing a couple tests
>and what I'd suggest 
>is encoding using the narrowband (8 kHz normally)
>mode even though your 
>data is at 11.025 kHz. It won't work for wav input
>(for now) but it will 
>work for raw audio. Note that your mileage may vary
>depending on the 
>input. There may be some noise in the high (~5 kHz)
>band, mostly is 
>there is lots of energy in the low-band (you may want
>to slightly 
>high-pass). This is because it's sometimes hard to
>encode audio when 
>there's a high energy difference (80-100 dB) between
>low frequencies and 
>high frequencies. 
>        Jean-Marc 
>Jean-Marc Valin, M.Sc.A.
>LABORIUS (http://www.gel.usherb.ca/laborius)
>Université de Sherbrooke, Québec, Canada

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