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Discussion Groups | Speech Coding | the parameters of G.723.1

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

  

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the parameters of G.723.1 - setumi71 - Jan 15 10:05:00 2004



Hi,
I have downloaded c-code for the codec G.723.1.
The parameters of subframes:

/*subframe coded parameters */
typedef struct {
Word16 AcLg ; /* adaptive code book lags */
Word16 AcGn ; /* adaptive code book gain */
Word16 Mamp ; /* ????? */
Word16 Grid ; /* ????? */
Word16 Tran ; /* ????? */
Word16 Pamp ; /* pulse amplitude */
Word32 Ppos ; /* pulse positions */
} SFSDEF ;

What do they represent three variables Mamp, Grid and Tran?
Are these 7 parameters all meaningful ones for the frame?
Somebody help me!
Giovy.




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