melp_sub.h
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上传日期：2021-12-16
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- /*
- 2.4 kbps MELP Proposed Federal Standard speech coder
- version 1.2
- Copyright (c) 1996, Texas Instruments, Inc.
- Texas Instruments has intellectual property rights on the MELP
- algorithm. The Texas Instruments contact for licensing issues for
- commercial and non-government use is William Gordon, Director,
- Government Contracts, Texas Instruments Incorporated, Semiconductor
- Group (phone 972 480 7442).
- */
- /*
- melp_sub.h: include file for MELP subroutines
- */
- void dc_rmv(float sigin[], float sigout[], float dcdel[], int frame);
- void bpvc_ana(float speech[], float fpitch[], float bpvc[], float sub_pitch[]);
- void bpvc_ana_init(int fr, int pmin, int pmax, int nbands, int num_p, int lmin);
- float gain_ana(float sigin[], float pitch, int minlength, int maxlength);
- void q_gain(float *gain,int *gain_index,float qlow,float qup,float qlev);
- void q_gain_dec(float *gain,int *gain_index,float qlow,float qup,float qlev);
- int q_bpvc(float *bpvc,int *bpvc_index,float bpthresh,int num_bands);
- void q_bpvc_dec(float *bpvc,int *bpvc_index,int uv_flag,int num_bands);
- void scale_adj(float *speech, float gain, float *prev_scale, int length, int sc_over);
- float lin_int_bnd(float x,float xmin,float xmax,float ymin,float ymax);
- void noise_est(float gain,float *noise_gain,float up,float down,float min,float max);
- void noise_sup(float *gain,float noise_gain,float max_noise,float max_atten,float nfact);
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