net.java.sip.communicator.impl.neomedia.codec.audio.g729
Class CorFunc

java.lang.Object
  net.java.sip.communicator.impl.neomedia.codec.audio.g729.CorFunc

 class CorFunc
extends Object

Functions corr_xy2() and cor_h_x().

Author:

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

Constructor Summary

CorFunc()

Method Summary

(package private) static void	cor_h_x(float[] h, float[] x, float[] d) Compute correlations of input response h[] with the target vector X[].
(package private) static void	corr_xy2(float[] xn, float[] y1, float[] y2, float[] g_coeff) Compute the correlation products needed for gain computation.

Methods inherited from class java.lang.Object

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

Constructor Detail

CorFunc

CorFunc()

Method Detail

corr_xy2

static void corr_xy2(float[] xn,
                     float[] y1,
                     float[] y2,
                     float[] g_coeff)

Compute the correlation products needed for gain computation.

Parameters:

xn - input : target vector x[0:l_subfr]

y1 - input : filtered adaptive codebook vector

y2 - input : filtered 1st codebook innovation

g_coeff - output: , -2 , and 2

cor_h_x

static void cor_h_x(float[] h,
                    float[] x,
                    float[] d)

Compute correlations of input response h[] with the target vector X[].

Parameters:

h - (i) :Impulse response of filters

x - (i) :Target vector

d - (o) :Correlations between h[] and x[]