bw_lpc
public static final void bw_lpc(float gamma,
float[] lpc_in,
float[] lpc_out,
int order)
bw_lpc
gamma
- lpc_in
- lpc_out
- order
-
comb_filter
public void comb_filter(float[] exc,
int esi,
float[] new_exc,
int nsi,
int nsf,
int pitch,
float[] pitch_gain,
float comb_gain)
Comb Filter
exc
- - decoded excitationesi
- new_exc
- - enhanced excitationnsi
- nsf
- - sub-frame sizepitch
- - pitch periodpitch_gain
- - pitch gain (3-tap)comb_gain
- - gain of comb filter
filter_mem2
public static final void filter_mem2(float[] x,
int xs,
float[] num,
float[] den,
float[] y,
int ys,
int N,
int ord,
float[] mem,
int ms)
filter_mem2
x
- xs
- num
- den
- y
- ys
- N
- ord
- mem
- ms
-
filter_mem2
public static final void filter_mem2(float[] x,
int xs,
float[] num,
float[] den,
int N,
int ord,
float[] mem,
int ms)
filter_mem2
x
- xs
- num
- den
- N
- ord
- mem
- ms
-
fir_mem2
public static final void fir_mem2(float[] x,
int xs,
float[] num,
float[] y,
int ys,
int N,
int ord,
float[] mem)
fir_mem2
x
- xs
- num
- y
- ys
- N
- ord
- mem
-
fir_mem_up
public void fir_mem_up(float[] x,
float[] a,
float[] y,
int N,
int M,
float[] mem)
fir_mem_up
x
- a
- y
- N
- M
- mem
-
iir_mem2
public static final void iir_mem2(float[] x,
int xs,
float[] den,
float[] y,
int ys,
int N,
int ord,
float[] mem)
iir_mem2
x
- xs
- den
- y
- ys
- N
- ord
- mem
-
init
public void init()
Initialisation
qmf_decomp
public static final void qmf_decomp(float[] xx,
float[] aa,
float[] y1,
float[] y2,
int N,
int M,
float[] mem)
Quadrature Mirror Filter to Split the band in two.
A 16kHz signal is thus divided into two 8kHz signals representing the low and high bands.
(used by wideband encoder)
xx
- aa
- y1
- y2
- N
- M
- mem
-
residue_percep_zero
public static final void residue_percep_zero(float[] xx,
int xxs,
float[] ak,
float[] awk1,
float[] awk2,
float[] y,
int N,
int ord)
residue_percep_zero
xx
- xxs
- ak
- awk1
- awk2
- y
- N
- ord
-
syn_percep_zero
public static final void syn_percep_zero(float[] xx,
int xxs,
float[] ak,
float[] awk1,
float[] awk2,
float[] y,
int N,
int ord)
syn_percep_zero
xx
- xxs
- ak
- awk1
- awk2
- y
- N
- ord
-