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Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)

  

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IMA ADPCM - dunjie17 - Jan 19 21:53:00 2005





hi,

does anyone know how do they come up with the
quantisation values in the table?

rgds,
tk





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Re: IMA ADPCM - Phil Frisbie, Jr. - Jan 20 13:32:00 2005


dunjie17 wrote:

> hi,
>
> does anyone know how do they come up with the
> quantisation values in the table?

They are logarithmic in order to more accurately reproduce low amplitude sounds
at the expense of loud sounds.

> rgds,
> tk

--
Phil Frisbie, Jr.
Hawk Software
http://www.hawksoft.com




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