ref: 16ca18b9b087fffb7fec386115e759e334a629ad
dir: /libcelt/pitch.h/
/* (C) 2007-2008 Jean-Marc Valin, CSIRO
*/
/**
@file pitch.h
@brief Pitch analysis
*/
/*
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contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
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
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*/
#ifndef _PITCH_H
#define _PITCH_H
#include "kiss_fftr.h"
#include "psy.h"
#include "modes.h"
kiss_fftr_cfg pitch_state_alloc(int max_lag);
void pitch_state_free(kiss_fftr_cfg st);
/** Find the optimal delay for the pitch prediction. Computation is
done in the frequency domain, both to save time and to make it
easier to apply psychoacoustic weighting */
void find_spectral_pitch(const CELTMode *m, kiss_fftr_cfg fft, const struct PsyDecay *decay, const celt_sig_t *x, const celt_sig_t *y, const celt_word16_t *window, int len, int max_pitch, int *pitch);
#endif