81 lines
3.7 KiB
C
81 lines
3.7 KiB
C
/*---------------------------------------------------------------------------*\
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FILE........: newamp1.h
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AUTHOR......: David Rowe
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DATE CREATED: Jan 2017
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Quantisation functions for the sinusoidal coder, using "newamp1"
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algorithm that resamples variable rate L [Am} to a fixed rate K then
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VQs.
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\*---------------------------------------------------------------------------*/
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/*
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Copyright David Rowe 2017
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All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License version 2.1, as
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published by the Free Software Foundation. This program is
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distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __NEWAMP1__
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#define __NEWAMP1__
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#define NEWAMP1_N_INDEXES 4 /* Number of indexes to pack: vq1, vq2, energy, Wo */
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#define NEWAMP1_PHASE_NFFT 128 /* size of FFT used for phase synthesis */
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#define NEWAMP1_K 20 /* rate K vector length */
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#include "codec2_fft.h"
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#include "comp.h"
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void interp_para(float y[], float xp[], float yp[], int np, float x[], int n);
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float ftomel(float fHz);
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void mel_sample_freqs_kHz(float rate_K_sample_freqs_kHz[], int K, float mel_start, float mel_end);
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void resample_const_rate_f(C2CONST *c2const, MODEL *model, float rate_K_vec[], float rate_K_sample_freqs_kHz[], int K);
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float rate_K_mbest_encode(int *indexes, float *x, float *xq, int ndim, int mbest_entries);
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void post_filter_newamp1(float vec[], float sample_freq_kHz[], int K, float pf_gain);
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void interp_Wo_v(float Wo_[], int L_[], int voicing_[], float Wo1, float Wo2, int voicing1, int voicing2);
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void resample_rate_L(C2CONST *c2const, MODEL *model, float rate_K_vec[], float rate_K_sample_freqs_kHz[], int K);
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void determine_phase(C2CONST *c2const, COMP H[], MODEL *model, int Nfft, codec2_fft_cfg fwd_cfg, codec2_fft_cfg inv_cfg);
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void newamp1_model_to_indexes(C2CONST *c2const,
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int indexes[],
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MODEL *model,
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float rate_K_vec[],
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float rate_K_sample_freqs_kHz[],
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int K,
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float *mean,
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float rate_K_vec_no_mean[],
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float rate_K_vec_no_mean_[]
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);
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void newamp1_indexes_to_rate_K_vec(float rate_K_vec_[],
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float rate_K_vec_no_mean_[],
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float rate_K_sample_freqs_kHz[],
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int K,
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float *mean_,
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int indexes[]);
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void newamp1_interpolate(float interpolated_surface_[], float left_vec[], float right_vec[], int K);
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void newamp1_indexes_to_model(C2CONST *c2const,
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MODEL model_[],
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COMP H[],
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float interpolated_surface_[],
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float prev_rate_K_vec_[],
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float *Wo_left,
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int *voicing_left,
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float rate_K_sample_freqs_kHz[],
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int K,
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codec2_fft_cfg fwd_cfg,
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codec2_fft_cfg inv_cfg,
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int indexes[]);
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#endif
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