net.java.sip.communicator.impl.media.codec.audio.g729
Class AcelpCo

java.lang.Object
  net.java.sip.communicator.impl.media.codec.audio.g729.AcelpCo

 class AcelpCo
extends Object

Fixed codebook encoding routines.

Author:

Lubomir Marinov (translation of ITU-T C source code to Java)

Constructor Summary

AcelpCo()

Method Summary

(package private) int

ACELP_codebook(float[] x, float[] h, int t0, float pitch_sharp, int i_subfr, float[] code, float[] y, IntReference sign)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AcelpCo

AcelpCo()

Method Detail

ACELP_codebook

int ACELP_codebook(float[] x,
                   float[] h,
                   int t0,
                   float pitch_sharp,
                   int i_subfr,
                   float[] code,
                   float[] y,
                   IntReference sign)

Parameters:

x - (i) :Target vector

h - (i) :Impulse response of filters

t0 - (i) :Pitch lag

pitch_sharp - (i) :Last quantized pitch gain

i_subfr - (i) :Indicator of 1st subframe,

code - (o) :Innovative codebook

y - (o) :Filtered innovative codebook

sign - (o) :Signs of 4 pulses

Returns:

index of pulses positions