coeff.h

MELPe 1200 bps, fixed point

/*

2.4 kbps MELP Proposed Federal Standard speech coder

Fixed-point C code, version 1.0

Copyright (c) 1998, 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 [phone]).

The fixed-point version of the voice codec Mixed Excitation Linear
Prediction (MELP) is based on specifications on the C-language software
simulation contained in GSM 06.06 which is protected by copyright and
is the property of the European Telecommunications Standards Institute
(ETSI). This standard is available from the ETSI publication office
tel. [phone]. ETSI has granted a license to United States
Department of Defense to use the C-language software simulation contained
in GSM 06.06 for the purposes of the development of a fixed-point
version of the voice codec Mixed Excitation Linear Prediction (MELP).
Requests for authorization to make other use of the GSM 06.06 or
otherwise distribute or modify them need to be addressed to the ETSI
Secretariat fax: [phone].

*/

/* coeff.h: filter coefficient header file */
/*                                         */
/* (C) 1997  Texas Instruments             */
/*                                         */

#ifndef _COEFF_H_
#define _COEFF_H_


#include "sc1200.h"

/* Lowpass filter coefficient in second-order sections */

extern const Shortword	lpf_num[];
extern const Shortword	lpf_den[];

/* Butterworth bandpass filters in second-order sections */
extern const Shortword	bpf_num[];
extern const Shortword	bpf_num_class[];

/* sign of coefficients for bpf_den is reversed */
extern const Shortword	bpf_den[];
extern const Shortword	bpf_den_class[];

/* Hamming window coefficents in Q15 */
extern const Shortword	win_cof[];

/* Bandpass filter coeffients */
extern const Shortword	bp_cof[][MIX_ORD + 1];

/* Triangle pulse dispersion filter */
extern const Shortword	disp_cof[];


#endif