1 /* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */ 2 /* ==================================================================== 3 * Copyright (c) 1999-2001 Carnegie Mellon University. All rights 4 * reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 18 * This work was supported in part by funding from the Defense Advanced 19 * Research Projects Agency and the National Science Foundation of the 20 * United States of America, and the CMU Sphinx Speech Consortium. 21 * 22 * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND 23 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY 26 * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * ==================================================================== 35 * 36 */ 37 /* 38 * muLaw.h -- Table for converting mu-law data into 16-bit linear PCM format. 39 * 40 * ********************************************** 41 * CMU ARPA Speech Project 42 * 43 * Copyright (c) 1996 Carnegie Mellon University. 44 * ALL RIGHTS RESERVED. 45 * ********************************************** 46 * 47 * HISTORY 48 * 49 * 21-Jul-97 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University 50 * Created from Sunil Issar's version. 51 */ 52 53 /** 54 * \file mulaw.h 55 * \brief Table for converting mu-law data into 16-bit linear PCM format. 56 */ 57 58 59 #ifndef _MULAW_H_ 60 #define _MULAW_H_ 61 62 63 static int16 muLaw[256] = { 64 -0x1f5f, -0x1e5f, -0x1d5f, -0x1c5f, -0x1b5f, -0x1a5f, -0x195f, -0x185f, 65 -0x175f, -0x165f, -0x155f, -0x145f, -0x135f, -0x125f, -0x115f, -0x105f, 66 -0x0f9f, -0x0f1f, -0x0e9f, -0x0e1f, -0x0d9f, -0x0d1f, -0x0c9f, -0x0c1f, 67 -0x0b9f, -0x0b1f, -0x0a9f, -0x0a1f, -0x099f, -0x091f, -0x089f, -0x081f, 68 -0x07bf, -0x077f, -0x073f, -0x06ff, -0x06bf, -0x067f, -0x063f, -0x05ff, 69 -0x05bf, -0x057f, -0x053f, -0x04ff, -0x04bf, -0x047f, -0x043f, -0x03ff, 70 -0x03cf, -0x03af, -0x038f, -0x036f, -0x034f, -0x032f, -0x030f, -0x02ef, 71 -0x02cf, -0x02af, -0x028f, -0x026f, -0x024f, -0x022f, -0x020f, -0x01ef, 72 -0x01d7, -0x01c7, -0x01b7, -0x01a7, -0x0197, -0x0187, -0x0177, -0x0167, 73 -0x0157, -0x0147, -0x0137, -0x0127, -0x0117, -0x0107, -0x00f7, -0x00e7, 74 -0x00db, -0x00d3, -0x00cb, -0x00c3, -0x00bb, -0x00b3, -0x00ab, -0x00a3, 75 -0x009b, -0x0093, -0x008b, -0x0083, -0x007b, -0x0073, -0x006b, -0x0063, 76 -0x005d, -0x0059, -0x0055, -0x0051, -0x004d, -0x0049, -0x0045, -0x0041, 77 -0x003d, -0x0039, -0x0035, -0x0031, -0x002d, -0x0029, -0x0025, -0x0021, 78 -0x001e, -0x001c, -0x001a, -0x0018, -0x0016, -0x0014, -0x0012, -0x0010, 79 -0x000e, -0x000c, -0x000a, -0x0008, -0x0006, -0x0004, -0x0002, 0x0000, 80 0x1f5f, 0x1e5f, 0x1d5f, 0x1c5f, 0x1b5f, 0x1a5f, 0x195f, 0x185f, 81 0x175f, 0x165f, 0x155f, 0x145f, 0x135f, 0x125f, 0x115f, 0x105f, 82 0x0f9f, 0x0f1f, 0x0e9f, 0x0e1f, 0x0d9f, 0x0d1f, 0x0c9f, 0x0c1f, 83 0x0b9f, 0x0b1f, 0x0a9f, 0x0a1f, 0x099f, 0x091f, 0x089f, 0x081f, 84 0x07bf, 0x077f, 0x073f, 0x06ff, 0x06bf, 0x067f, 0x063f, 0x05ff, 85 0x05bf, 0x057f, 0x053f, 0x04ff, 0x04bf, 0x047f, 0x043f, 0x03ff, 86 0x03cf, 0x03af, 0x038f, 0x036f, 0x034f, 0x032f, 0x030f, 0x02ef, 87 0x02cf, 0x02af, 0x028f, 0x026f, 0x024f, 0x022f, 0x020f, 0x01ef, 88 0x01d7, 0x01c7, 0x01b7, 0x01a7, 0x0197, 0x0187, 0x0177, 0x0167, 89 0x0157, 0x0147, 0x0137, 0x0127, 0x0117, 0x0107, 0x00f7, 0x00e7, 90 0x00db, 0x00d3, 0x00cb, 0x00c3, 0x00bb, 0x00b3, 0x00ab, 0x00a3, 91 0x009b, 0x0093, 0x008b, 0x0083, 0x007b, 0x0073, 0x006b, 0x0063, 92 0x005d, 0x0059, 0x0055, 0x0051, 0x004d, 0x0049, 0x0045, 0x0041, 93 0x003d, 0x0039, 0x0035, 0x0031, 0x002d, 0x0029, 0x0025, 0x0021, 94 0x001e, 0x001c, 0x001a, 0x0018, 0x0016, 0x0014, 0x0012, 0x0010, 95 0x000e, 0x000c, 0x000a, 0x0008, 0x0006, 0x0004, 0x0002, 0x0000, 96 }; 97 98 99 #endif 100