pitch.c File Reference

Pitch analysis. More...

#include "pitch.h"
#include "os_support.h"
#include "modes.h"
#include "stack_alloc.h"
#include "mathops.h"
#include "celt_lpc.h"

Functions
void	pitch_downsample (celt_sig *OPUS_RESTRICT x[], opus_val16 *OPUS_RESTRICT x_lp, int len, int C, int arch)
void	celt_pitch_xcorr (const opus_val16 *_x, const opus_val16 *_y, opus_val32 *xcorr, int len, int max_pitch, int arch)
void	pitch_search (const opus_val16 *OPUS_RESTRICT x_lp, opus_val16 *OPUS_RESTRICT y, int len, int max_pitch, int *pitch, int arch)
opus_val16	remove_doubling (opus_val16 *x, int maxperiod, int minperiod, int N, int *T0_, int prev_period, opus_val16 prev_gain, int arch)

Detailed Description

Pitch analysis.

Function Documentation

celt_pitch_xcorr()

void celt_pitch_xcorr	(	const opus_val16 *	_x,
		const opus_val16 *	_y,
		opus_val32 *	xcorr,
		int	len,
		int	max_pitch,
		int	arch
	)

pitch_downsample()

void pitch_downsample	(	celt_sig *OPUS_RESTRICT	x[],
		opus_val16 *OPUS_RESTRICT	x_lp,
		int	len,
		int	C,
		int	arch
	)

pitch_search()

void pitch_search	(	const opus_val16 *OPUS_RESTRICT	x_lp,
		opus_val16 *OPUS_RESTRICT	y,
		int	len,
		int	max_pitch,
		int *	pitch,
		int	arch
	)

remove_doubling()

opus_val16 remove_doubling	(	opus_val16 *	x,
		int	maxperiod,
		int	minperiod,
		int	N,
		int *	T0_,
		int	prev_period,
		opus_val16	prev_gain,
		int	arch
	)