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

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

public class Silk_noise_shape_analysis_FLP
extends Object

Author:

Jing Dai, Dingxin Xu

Constructor Summary

Silk_noise_shape_analysis_FLP()

Method Summary

(package private) static void	LPC_fit_int16(float[] a, int a_offset, float bwe, int L, float maxVal)
(package private) static void	SKP_Silk_noise_shape_analysis_FLP(SKP_Silk_encoder_state_FLP psEnc, SKP_Silk_encoder_control_FLP psEncCtrl, float[] pitch_res, int pitch_res_offset, float[] x, int x_offset) Compute noise shaping coefficients and initial gain values.

Methods inherited from class java.lang.Object

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

Constructor Detail

Silk_noise_shape_analysis_FLP

public Silk_noise_shape_analysis_FLP()

Method Detail

SKP_Silk_noise_shape_analysis_FLP

static void SKP_Silk_noise_shape_analysis_FLP(SKP_Silk_encoder_state_FLP psEnc,
                                              SKP_Silk_encoder_control_FLP psEncCtrl,
                                              float[] pitch_res,
                                              int pitch_res_offset,
                                              float[] x,
                                              int x_offset)

Compute noise shaping coefficients and initial gain values.

Parameters:

psEnc - Encoder state FLP

psEncCtrl - Encoder control FLP

pitch_res - LPC residual from pitch analysis

pitch_res_offset - offset of valid data.

x - Input signal [frame_length + la_shape]

x_offset - offset of valid data.

LPC_fit_int16

static void LPC_fit_int16(float[] a,
                          int a_offset,
                          float bwe,
                          int L,
                          float maxVal)

Parameters:

a - Unstable/stabilized LPC vector [L].

a_offset - offset of valid data.

bwe - Bandwidth expansion factor.

L - Number of LPC parameters in the input vector.

maxVal - Maximum value allowed.