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

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

public class Silk_VAD
extends Object

Author:

Jing Dai, Dingxin Xu

Field Summary

(package private) static int[]

tiltWeights

Constructor Summary

Silk_VAD()

Method Summary

(package private) static void	SKP_Silk_VAD_GetNoiseLevels(int[] pX, SKP_Silk_VAD_state psSilk_VAD) Noise level estimation.
(package private) static int	SKP_Silk_VAD_GetSA_Q8(SKP_Silk_VAD_state psSilk_VAD, int[] pSA_Q8, int[] pSNR_dB_Q7, int[] pQuality_Q15, int[] pTilt_Q15, short[] pIn, int pIn_offset, int framelength) Get the speech activity level in Q8.
(package private) static int	SKP_Silk_VAD_Init(SKP_Silk_VAD_state psSilk_VAD) Initialization of the Silk VAD.

Methods inherited from class java.lang.Object

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

Field Detail

tiltWeights

static int[] tiltWeights

Constructor Detail

Silk_VAD

public Silk_VAD()

Method Detail

SKP_Silk_VAD_Init

static int SKP_Silk_VAD_Init(SKP_Silk_VAD_state psSilk_VAD)

Initialization of the Silk VAD.

Parameters:

psSilk_VAD - Silk VAD state.

Returns:

return 0 if success.

SKP_Silk_VAD_GetSA_Q8

static int SKP_Silk_VAD_GetSA_Q8(SKP_Silk_VAD_state psSilk_VAD,
                                 int[] pSA_Q8,
                                 int[] pSNR_dB_Q7,
                                 int[] pQuality_Q15,
                                 int[] pTilt_Q15,
                                 short[] pIn,
                                 int pIn_offset,
                                 int framelength)

Get the speech activity level in Q8.

Parameters:

psSilk_VAD - Silk VAD state.

pSA_Q8 - Speech activity level in Q8.

pSNR_dB_Q7 - SNR for current frame in Q7.

pQuality_Q15 - Smoothed SNR for each band.

pTilt_Q15 - Smoothed SNR for each band.

pIn - PCM input[framelength].

pIn_offset - offset of valid data.

framelength - Input frame length.

Returns:

Return value, 0 if success.

SKP_Silk_VAD_GetNoiseLevels

static void SKP_Silk_VAD_GetNoiseLevels(int[] pX,
                                        SKP_Silk_VAD_state psSilk_VAD)

Noise level estimation.

Parameters:

pX - subband energies.

psSilk_VAD - Silk VAD state.