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Commit 590e9ce4 authored by Jean-Marc Valin's avatar Jean-Marc Valin
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Move the common functions from dump_data.c to freq.c

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dnn/compile.sh
+ 2
− 2
View file @ 590e9ce4
#!/bin/sh
gcc -DTRAINING=1 -Wall -W -O3 -g -I../include dump_data.c kiss_fft.c pitch.c celt_lpc.c -o dump_data -lm
gcc -o test_lpcnet -mavx2 -mfma -g -O3 -Wall -W -Wextra lpcnet.c nnet.c nnet_data.c dump_data.c kiss_fft.c pitch.c celt_lpc.c -lm
gcc -DTRAINING=1 -Wall -W -O3 -g -I../include dump_data.c freq.c kiss_fft.c pitch.c celt_lpc.c -o dump_data -lm
gcc -o test_lpcnet -mavx2 -mfma -g -O3 -Wall -W -Wextra lpcnet.c nnet.c nnet_data.c freq.c kiss_fft.c pitch.c celt_lpc.c -lm
dnn/dump_data.c
+ 1
− 243
View file @ 590e9ce4
......@@ -40,27 +40,13 @@
#include "celt_lpc.h"
#include <assert.h>
#define PREEMPHASIS (0.85f)
#define FRAME_SIZE_SHIFT 2
#define FRAME_SIZE (40<<FRAME_SIZE_SHIFT)
#define WINDOW_SIZE (2*FRAME_SIZE)
#define FREQ_SIZE (FRAME_SIZE + 1)
#define PITCH_MIN_PERIOD 32
#define PITCH_MAX_PERIOD 256
#define PITCH_FRAME_SIZE 320
#define PITCH_BUF_SIZE (PITCH_MAX_PERIOD+PITCH_FRAME_SIZE)
#define SQUARE(x) ((x)*(x))
#define SMOOTH_BANDS 1
#if SMOOTH_BANDS
#define NB_BANDS 18
#else
#define NB_BANDS 17
#endif
#define CEPS_MEM 8
#define NB_DELTA_CEPS 6
......@@ -72,18 +58,9 @@
#define TRAINING 0
#endif
static const opus_int16 eband5ms[] = {
/*0 200 400 600 800 1k 1.2 1.4 1.6 2k 2.4 2.8 3.2 4k 4.8 5.6 6.8 8k*/
0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 34, 40
};
typedef struct {
int init;
kiss_fft_state *kfft;
float half_window[FRAME_SIZE];
float dct_table[NB_BANDS*NB_BANDS];
} CommonState;
struct DenoiseState {
float analysis_mem[FRAME_SIZE];
......@@ -98,178 +75,6 @@ struct DenoiseState {
float lastg[NB_BANDS];
};
#if SMOOTH_BANDS
void compute_band_energy(float *bandE, const kiss_fft_cpx *X) {
int i;
float sum[NB_BANDS] = {0};
for (i=0;i<NB_BANDS-1;i++)
{
int j;
int band_size;
band_size = (eband5ms[i+1]-eband5ms[i])<<FRAME_SIZE_SHIFT;
for (j=0;j<band_size;j++) {
float tmp;
float frac = (float)j/band_size;
tmp = SQUARE(X[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].r);
tmp += SQUARE(X[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].i);
sum[i] += (1-frac)*tmp;
sum[i+1] += frac*tmp;
}
}
sum[0] *= 2;
sum[NB_BANDS-1] *= 2;
for (i=0;i<NB_BANDS;i++)
{
bandE[i] = sum[i];
}
}
void compute_band_corr(float *bandE, const kiss_fft_cpx *X, const kiss_fft_cpx *P) {
int i;
float sum[NB_BANDS] = {0};
for (i=0;i<NB_BANDS-1;i++)
{
int j;
int band_size;
band_size = (eband5ms[i+1]-eband5ms[i])<<FRAME_SIZE_SHIFT;
for (j=0;j<band_size;j++) {
float tmp;
float frac = (float)j/band_size;
tmp = X[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].r * P[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].r;
tmp += X[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].i * P[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].i;
sum[i] += (1-frac)*tmp;
sum[i+1] += frac*tmp;
}
}
sum[0] *= 2;
sum[NB_BANDS-1] *= 2;
for (i=0;i<NB_BANDS;i++)
{
bandE[i] = sum[i];
}
}
void interp_band_gain(float *g, const float *bandE) {
int i;
memset(g, 0, FREQ_SIZE);
for (i=0;i<NB_BANDS-1;i++)
{
int j;
int band_size;
band_size = (eband5ms[i+1]-eband5ms[i])<<FRAME_SIZE_SHIFT;
for (j=0;j<band_size;j++) {
float frac = (float)j/band_size;
g[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j] = (1-frac)*bandE[i] + frac*bandE[i+1];
}
}
}
#else
void compute_band_energy(float *bandE, const kiss_fft_cpx *X) {
int i;
for (i=0;i<NB_BANDS;i++)
{
int j;
opus_val32 sum = 0;
for (j=0;j<(eband5ms[i+1]-eband5ms[i])<<FRAME_SIZE_SHIFT;j++) {
sum += SQUARE(X[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].r);
sum += SQUARE(X[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].i);
}
bandE[i] = sum;
}
}
void interp_band_gain(float *g, const float *bandE) {
int i;
memset(g, 0, FREQ_SIZE);
for (i=0;i<NB_BANDS;i++)
{
int j;
for (j=0;j<(eband5ms[i+1]-eband5ms[i])<<FRAME_SIZE_SHIFT;j++)
g[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j] = bandE[i];
}
}
#endif
CommonState common;
static void check_init() {
int i;
if (common.init) return;
common.kfft = opus_fft_alloc_twiddles(2*FRAME_SIZE, NULL, NULL, NULL, 0);
for (i=0;i<FRAME_SIZE;i++)
common.half_window[i] = sin(.5*M_PI*sin(.5*M_PI*(i+.5)/FRAME_SIZE) * sin(.5*M_PI*(i+.5)/FRAME_SIZE));
for (i=0;i<NB_BANDS;i++) {
int j;
for (j=0;j<NB_BANDS;j++) {
common.dct_table[i*NB_BANDS + j] = cos((i+.5)*j*M_PI/NB_BANDS);
if (j==0) common.dct_table[i*NB_BANDS + j] *= sqrt(.5);
}
}
common.init = 1;
}
static void dct(float *out, const float *in) {
int i;
check_init();
for (i=0;i<NB_BANDS;i++) {
int j;
float sum = 0;
for (j=0;j<NB_BANDS;j++) {
sum += in[j] * common.dct_table[j*NB_BANDS + i];
}
out[i] = sum*sqrt(2./NB_BANDS);
}
}
static void idct(float *out, const float *in) {
int i;
check_init();
for (i=0;i<NB_BANDS;i++) {
int j;
float sum = 0;
for (j=0;j<NB_BANDS;j++) {
sum += in[j] * common.dct_table[i*NB_BANDS + j];
}
out[i] = sum*sqrt(2./NB_BANDS);
}
}
static void forward_transform(kiss_fft_cpx *out, const float *in) {
int i;
kiss_fft_cpx x[WINDOW_SIZE];
kiss_fft_cpx y[WINDOW_SIZE];
check_init();
for (i=0;i<WINDOW_SIZE;i++) {
x[i].r = in[i];
x[i].i = 0;
}
opus_fft(common.kfft, x, y, 0);
for (i=0;i<FREQ_SIZE;i++) {
out[i] = y[i];
}
}
static void inverse_transform(float *out, const kiss_fft_cpx *in) {
int i;
kiss_fft_cpx x[WINDOW_SIZE];
kiss_fft_cpx y[WINDOW_SIZE];
check_init();
for (i=0;i<FREQ_SIZE;i++) {
x[i] = in[i];
}
for (;i<WINDOW_SIZE;i++) {
x[i].r = x[WINDOW_SIZE - i].r;
x[i].i = -x[WINDOW_SIZE - i].i;
}
opus_fft(common.kfft, x, y, 0);
/* output in reverse order for IFFT. */
out[0] = WINDOW_SIZE*y[0].r;
for (i=1;i<WINDOW_SIZE;i++) {
out[i] = WINDOW_SIZE*y[WINDOW_SIZE - i].r;
}
}
int rnnoise_get_size() {
return sizeof(DenoiseState);
}
......@@ -297,55 +102,9 @@ short float2short(float x)
return IMAX(-32767, IMIN(32767, i));
}
static float lpc_from_bands(float *lpc, const float *Ex)
{
int i;
float e;
float ac[LPC_ORDER+1];
float rc[LPC_ORDER];
float Xr[FREQ_SIZE];
kiss_fft_cpx X_auto[FREQ_SIZE];
float x_auto[FRAME_SIZE];
interp_band_gain(Xr, Ex);
RNN_CLEAR(X_auto, FREQ_SIZE);
for (i=0;i<160;i++) X_auto[i].r = Xr[i];
inverse_transform(x_auto, X_auto);
for (i=0;i<LPC_ORDER+1;i++) ac[i] = x_auto[i];
/* -40 dB noise floor. */
ac[0] += ac[0]*1e-4 + 320/12/38.;
/* Lag windowing. */
for (i=1;i<LPC_ORDER+1;i++) ac[i] *= (1 - 6e-5*i*i);
e = _celt_lpc(lpc, rc, ac, LPC_ORDER);
return e;
}
float lpc_from_cepstrum(float *lpc, const float *cepstrum)
{
int i;
float Ex[NB_BANDS];
float tmp[NB_BANDS];
RNN_COPY(tmp, cepstrum, NB_BANDS);
tmp[0] += 4;
idct(Ex, tmp);
for (i=0;i<NB_BANDS;i++) Ex[i] = pow(10.f, Ex[i]);
return lpc_from_bands(lpc, Ex);
}
#if TRAINING
int lowpass = FREQ_SIZE;
int band_lp = NB_BANDS;
static void apply_window(float *x) {
int i;
check_init();
for (i=0;i<FRAME_SIZE;i++) {
x[i] *= common.half_window[i];
x[WINDOW_SIZE - 1 - i] *= common.half_window[i];
}
}
static void frame_analysis(DenoiseState *st, kiss_fft_cpx *X, float *Ex, const float *in) {
int i;
float x[WINDOW_SIZE];
......@@ -575,4 +334,3 @@ int main(int argc, char **argv) {
return 0;
}
#endif
dnn/freq.c 0 → 100644
+ 247
− 0
View file @ 590e9ce4
/* Copyright (c) 2017-2018 Mozilla */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "kiss_fft.h"
#include "common.h"
#include <math.h>
#include "freq.h"
#include "pitch.h"
#include "arch.h"
#include "celt_lpc.h"
#include <assert.h>
#define SQUARE(x) ((x)*(x))
static const opus_int16 eband5ms[] = {
/*0 200 400 600 800 1k 1.2 1.4 1.6 2k 2.4 2.8 3.2 4k 4.8 5.6 6.8 8k*/
0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 34, 40
};
typedef struct {
int init;
kiss_fft_state *kfft;
float half_window[FRAME_SIZE];
float dct_table[NB_BANDS*NB_BANDS];
} CommonState;
void compute_band_energy(float *bandE, const kiss_fft_cpx *X) {
int i;
float sum[NB_BANDS] = {0};
for (i=0;i<NB_BANDS-1;i++)
{
int j;
int band_size;
band_size = (eband5ms[i+1]-eband5ms[i])<<FRAME_SIZE_SHIFT;
for (j=0;j<band_size;j++) {
float tmp;
float frac = (float)j/band_size;
tmp = SQUARE(X[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].r);
tmp += SQUARE(X[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].i);
sum[i] += (1-frac)*tmp;
sum[i+1] += frac*tmp;
}
}
sum[0] *= 2;
sum[NB_BANDS-1] *= 2;
for (i=0;i<NB_BANDS;i++)
{
bandE[i] = sum[i];
}
}
void compute_band_corr(float *bandE, const kiss_fft_cpx *X, const kiss_fft_cpx *P) {
int i;
float sum[NB_BANDS] = {0};
for (i=0;i<NB_BANDS-1;i++)
{
int j;
int band_size;
band_size = (eband5ms[i+1]-eband5ms[i])<<FRAME_SIZE_SHIFT;
for (j=0;j<band_size;j++) {
float tmp;
float frac = (float)j/band_size;
tmp = X[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].r * P[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].r;
tmp += X[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].i * P[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j].i;
sum[i] += (1-frac)*tmp;
sum[i+1] += frac*tmp;
}
}
sum[0] *= 2;
sum[NB_BANDS-1] *= 2;
for (i=0;i<NB_BANDS;i++)
{
bandE[i] = sum[i];
}
}
void interp_band_gain(float *g, const float *bandE) {
int i;
memset(g, 0, FREQ_SIZE);
for (i=0;i<NB_BANDS-1;i++)
{
int j;
int band_size;
band_size = (eband5ms[i+1]-eband5ms[i])<<FRAME_SIZE_SHIFT;
for (j=0;j<band_size;j++) {
float frac = (float)j/band_size;
g[(eband5ms[i]<<FRAME_SIZE_SHIFT) + j] = (1-frac)*bandE[i] + frac*bandE[i+1];
}
}
}
CommonState common;
static void check_init() {
int i;
if (common.init) return;
common.kfft = opus_fft_alloc_twiddles(2*FRAME_SIZE, NULL, NULL, NULL, 0);
for (i=0;i<FRAME_SIZE;i++)
common.half_window[i] = sin(.5*M_PI*sin(.5*M_PI*(i+.5)/FRAME_SIZE) * sin(.5*M_PI*(i+.5)/FRAME_SIZE));
for (i=0;i<NB_BANDS;i++) {
int j;
for (j=0;j<NB_BANDS;j++) {
common.dct_table[i*NB_BANDS + j] = cos((i+.5)*j*M_PI/NB_BANDS);
if (j==0) common.dct_table[i*NB_BANDS + j] *= sqrt(.5);
}
}
common.init = 1;
}
void dct(float *out, const float *in) {
int i;
check_init();
for (i=0;i<NB_BANDS;i++) {
int j;
float sum = 0;
for (j=0;j<NB_BANDS;j++) {
sum += in[j] * common.dct_table[j*NB_BANDS + i];
}
out[i] = sum*sqrt(2./NB_BANDS);
}
}
void idct(float *out, const float *in) {
int i;
check_init();
for (i=0;i<NB_BANDS;i++) {
int j;
float sum = 0;
for (j=0;j<NB_BANDS;j++) {
sum += in[j] * common.dct_table[i*NB_BANDS + j];
}
out[i] = sum*sqrt(2./NB_BANDS);
}
}
void forward_transform(kiss_fft_cpx *out, const float *in) {
int i;
kiss_fft_cpx x[WINDOW_SIZE];
kiss_fft_cpx y[WINDOW_SIZE];
check_init();
for (i=0;i<WINDOW_SIZE;i++) {
x[i].r = in[i];
x[i].i = 0;
}
opus_fft(common.kfft, x, y, 0);
for (i=0;i<FREQ_SIZE;i++) {
out[i] = y[i];
}
}
void inverse_transform(float *out, const kiss_fft_cpx *in) {
int i;
kiss_fft_cpx x[WINDOW_SIZE];
kiss_fft_cpx y[WINDOW_SIZE];
check_init();
for (i=0;i<FREQ_SIZE;i++) {
x[i] = in[i];
}
for (;i<WINDOW_SIZE;i++) {
x[i].r = x[WINDOW_SIZE - i].r;
x[i].i = -x[WINDOW_SIZE - i].i;
}
opus_fft(common.kfft, x, y, 0);
/* output in reverse order for IFFT. */
out[0] = WINDOW_SIZE*y[0].r;
for (i=1;i<WINDOW_SIZE;i++) {
out[i] = WINDOW_SIZE*y[WINDOW_SIZE - i].r;
}
}
float lpc_from_bands(float *lpc, const float *Ex)
{
int i;
float e;
float ac[LPC_ORDER+1];
float rc[LPC_ORDER];
float Xr[FREQ_SIZE];
kiss_fft_cpx X_auto[FREQ_SIZE];
float x_auto[FRAME_SIZE];
interp_band_gain(Xr, Ex);
RNN_CLEAR(X_auto, FREQ_SIZE);
for (i=0;i<160;i++) X_auto[i].r = Xr[i];
inverse_transform(x_auto, X_auto);
for (i=0;i<LPC_ORDER+1;i++) ac[i] = x_auto[i];
/* -40 dB noise floor. */
ac[0] += ac[0]*1e-4 + 320/12/38.;
/* Lag windowing. */
for (i=1;i<LPC_ORDER+1;i++) ac[i] *= (1 - 6e-5*i*i);
e = _celt_lpc(lpc, rc, ac, LPC_ORDER);
return e;
}
float lpc_from_cepstrum(float *lpc, const float *cepstrum)
{
int i;
float Ex[NB_BANDS];
float tmp[NB_BANDS];
RNN_COPY(tmp, cepstrum, NB_BANDS);
tmp[0] += 4;
idct(Ex, tmp);
for (i=0;i<NB_BANDS;i++) Ex[i] = pow(10.f, Ex[i]);
return lpc_from_bands(lpc, Ex);
}
void apply_window(float *x) {
int i;
check_init();
for (i=0;i<FRAME_SIZE;i++) {
x[i] *= common.half_window[i];
x[WINDOW_SIZE - 1 - i] *= common.half_window[i];
}
}
dnn/freq.h
+ 24
− 1
View file @ 590e9ce4
/* Copyright (c) 2017 Mozilla */
/* Copyright (c) 2017-2018 Mozilla */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
......@@ -24,6 +24,16 @@
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define PREEMPHASIS (0.85f)
#define FRAME_SIZE_SHIFT 2
#define FRAME_SIZE (40<<FRAME_SIZE_SHIFT)
#define WINDOW_SIZE (2*FRAME_SIZE)
#define FREQ_SIZE (FRAME_SIZE + 1)
#define NB_BANDS 18
#ifndef RNNOISE_EXPORT
# if defined(WIN32)
# if defined(RNNOISE_BUILD) && defined(DLL_EXPORT)
......@@ -50,3 +60,16 @@ RNNOISE_EXPORT DenoiseState *rnnoise_create();
RNNOISE_EXPORT void rnnoise_destroy(DenoiseState *st);
RNNOISE_EXPORT float rnnoise_process_frame(DenoiseState *st, float *out, const float *in);
void compute_band_energy(float *bandE, const kiss_fft_cpx *X);
void compute_band_corr(float *bandE, const kiss_fft_cpx *X, const kiss_fft_cpx *P);
void apply_window(float *x);
void dct(float *out, const float *in);
void idct(float *out, const float *in);
void forward_transform(kiss_fft_cpx *out, const float *in);
void inverse_transform(float *out, const kiss_fft_cpx *in);
float lpc_from_bands(float *lpc, const float *Ex);
float lpc_from_cepstrum(float *lpc, const float *cepstrum);
void apply_window(float *x);
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