Abstract class that is the base for the various LTP (Long Term Prediction)
Quantisation and Unquantisation methods.
inner_prod
protected static float inner_prod(float[] x,
int xs,
float[] y,
int ys,
int len) Calculates the inner product of the given vectors.
x - - first vector.xs - - offset of the first vector.y - - second vector.ys - - offset of the second vector.len - - length of the vectors.
- the inner product of the given vectors.
open_loop_nbest_pitch
protected static void open_loop_nbest_pitch(float[] sw,
int swIdx,
int start,
int end,
int len,
int[] pitch,
float[] gain,
int N) Find the n-best pitch in Open Loop.
sw - swIdx - start - end - len - pitch - gain - N -
quant
public abstract int quant(float[] target,
float[] sw,
int sws,
float[] ak,
float[] awk1,
float[] awk2,
float[] exc,
int es,
int start,
int end,
float pitch_coef,
int p,
int nsf,
Bits bits,
float[] exc2,
int e2s,
float[] r,
int complexity) Long Term Prediction Quantification.
unquant
public abstract int unquant(float[] exc,
int es,
int start,
float pitch_coef,
int nsf,
float[] gain_val,
Bits bits,
int count_lost,
int subframe_offset,
float last_pitch_gain) Long Term Prediction Unquantification.
exc - - Excitationes - - Excitation offsetstart - - Smallest pitch value allowedpitch_coef - - Voicing (pitch) coefficientnsf - - Number of samples in subframegain_val - bits - - Speex bits buffer.count_lost - subframe_offset - last_pitch_gain -