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
-