AMR Implementation for Osmocom-BB

Akib Sayyed akibsayyed at gmail.com
Thu Oct 24 14:32:21 UTC 2013


Hello folks

I am trying to implement AMR codec for osmocom-bb. I got assignment commend
which is same as

T_AMR_CONFIGURATION amr_param;
    amr_param.noise_suppression_bit=0;
    amr_param.initial_codec_mode_indicator=1;
    amr_param.initial_codec_mode=0;
    amr_param.active_codec_set=0x95;
    amr_param.threshold[0]=0x0a;
    amr_param.threshold[1]=0x10;
    amr_param.threshold[2]=0x18;
    amr_param.threshold[3]=0x24;------------just random value
    amr_param.hysteresis[0]=0x04;
    amr_param.hysteresis[1]=0x04;
    amr_param.hysteresis[2]=0x04;
    amr_param.hysteresis[3]=0x04;----------just copied value from rest
config for hysteresis
    l1ddsp_load_amr_param( amr_param);



Now when i make a call I here gliches or random noise. also after some
time  there is radio signal loss and call is dropped.


I am not getting why this is happening.
-- 
Akib Sayyed
Matrix-Shell
akibsayyed at gmail.com
akibsayyed at matrixshell.com
Mob:- +91-966-514-2243
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