net.java.sip.communicator.impl.neomedia.codec.audio.silk
Class Silk_LPC_inv_pred_gain_FLP

java.lang.Object
  net.java.sip.communicator.impl.neomedia.codec.audio.silk.Silk_LPC_inv_pred_gain_FLP

public class Silk_LPC_inv_pred_gain_FLP
extends Object

compute inverse of LPC prediction gain, and test if LPC coefficients are stable (all poles within unit circle)

Author:

Jing Dai, Dingxin Xu

Field Summary

(package private) static float

RC_THRESHOLD

Constructor Summary

Silk_LPC_inv_pred_gain_FLP()

Method Summary

(package private) static int

SKP_Silk_LPC_inverse_pred_gain_FLP(float[] invGain, float[] A, int A_offset, int order) compute inverse of LPC prediction gain, and test if LPC coefficients are stable (all poles within unit circle) this code is based on SKP_Silk_a2k_FLP().

Methods inherited from class java.lang.Object

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

Field Detail

RC_THRESHOLD

static final float RC_THRESHOLD

See Also:

Constant Field Values

Constructor Detail

Silk_LPC_inv_pred_gain_FLP

public Silk_LPC_inv_pred_gain_FLP()

Method Detail

SKP_Silk_LPC_inverse_pred_gain_FLP

static int SKP_Silk_LPC_inverse_pred_gain_FLP(float[] invGain,
                                              float[] A,
                                              int A_offset,
                                              int order)

compute inverse of LPC prediction gain, and test if LPC coefficients are stable (all poles within unit circle) this code is based on SKP_Silk_a2k_FLP().

Parameters:

invGain - inverse prediction gain, energy domain

A - prediction coefficients [order]

A_offset - offset of valid data.

order - prediction order

Returns:

returns 1 if unstable, otherwise 0