dec4hpfilter2.h

各种工程计算的库函数

/*

    Decimation filter for rate 4
    Copyright (C) 2001 Jussi Laako

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/


#ifdef _MSC_VER
#pragma warning(disable:4305)
#endif


static const long lDec4hpFilterLen = 121l;

static const float fDec4hpFilterGain =  1.0f;
static const float fpDec4hpFilterCoeffs[] = {
    2.27511165807092E-5,
    -4.69334685978262E-5,
    5.59444215614934E-5,
    -3.03345116857967E-5,
    -3.51625071156962E-5,
    0.000120163758497706,
    -0.000179779351287223,
    0.000162846089610476,
    -4.21379379142045E-5,
    -0.000158181222615285,
    0.000356138884167074,
    -0.000438184587596674,
    0.000313764407575798,
    2.44116489296085E-5,
    -0.000467607751163834,
    0.000813305779331304,
    -0.000846751374711447,
    0.000453896495409946,
    0.000287527577319584,
    -0.00109459018551053,
    0.00157164512081116,
    -0.00138705367418495,
    0.000461927810521527,
    0.000925401546625971,
    -0.00219409795238592,
    0.00268387339764152,
    -0.00197028408944099,
    0.000131760576739722,
    0.00217788810193357,
    -0.00392981793928515,
    0.00414997020060235,
    -0.00241084543166628,
    -0.000846630133832004,
    0.00435389050453627,
    -0.00646866153559466,
    0.00589894532379735,
    -0.00239534315242629,
    -0.00292975904846156,
    0.00787865428145303,
    -0.0100159497273034,
    0.00778536994637303,
    -0.00141326527016137,
    -0.00686579414362055,
    0.0134868805234933,
    -0.0149786561286599,
    0.00960484033670776,
    0.00149266686967939,
    -0.0142564354207879,
    0.0229923447047381,
    -0.0226268654767769,
    0.0111272094465212,
    0.00892200078002045,
    -0.0303793215932014,
    0.0434669876723969,
    -0.03904590216319,
    0.0121407657462135,
    0.0356024700081632,
    -0.0955555608836997,
    0.154160319182123,
    -0.196832113159676,
    0.212440611023736,
    -0.196832113159676,
    0.154160319182123,
    -0.0955555608836997,
    0.0356024700081632,
    0.0121407657462135,
    -0.03904590216319,
    0.0434669876723969,
    -0.0303793215932014,
    0.00892200078002045,
    0.0111272094465212,
    -0.0226268654767769,
    0.0229923447047381,
    -0.0142564354207879,
    0.00149266686967939,
    0.00960484033670776,
    -0.0149786561286599,
    0.0134868805234933,
    -0.00686579414362055,
    -0.00141326527016137,
    0.00778536994637303,
    -0.0100159497273034,
    0.00787865428145303,
    -0.00292975904846156,
    -0.00239534315242629,
    0.00589894532379735,
    -0.00646866153559466,
    0.00435389050453627,
    -0.000846630133832004,
    -0.00241084543166628,
    0.00414997020060235,
    -0.00392981793928515,
    0.00217788810193357,
    0.000131760576739722,
    -0.00197028408944099,
    0.00268387339764152,
    -0.00219409795238592,
    0.000925401546625971,
    0.000461927810521527,
    -0.00138705367418495,
    0.00157164512081116,
    -0.00109459018551053,
    0.000287527577319584,
    0.000453896495409946,
    -0.000846751374711447,
    0.000813305779331304,
    -0.000467607751163834,
    2.44116489296085E-5,
    0.000313764407575798,
    -0.000438184587596674,
    0.000356138884167074,
    -0.000158181222615285,
    -4.21379379142045E-5,
    0.000162846089610476,
    -0.000179779351287223,
    0.000120163758497706,
    -3.51625071156962E-5,
    -3.03345116857967E-5,
    5.59444215614934E-5,
    -4.69334685978262E-5,
    2.27511165807092E-5
};


static const double dDec4hpFilterGain =  1.0;
static const double dpDec4hpFilterCoeffs[] = {
    2.27511165807092E-5,
    -4.69334685978262E-5,
    5.59444215614934E-5,
    -3.03345116857967E-5,
    -3.51625071156962E-5,
    0.000120163758497706,
    -0.000179779351287223,
    0.000162846089610476,
    -4.21379379142045E-5,
    -0.000158181222615285,
    0.000356138884167074,
    -0.000438184587596674,
    0.000313764407575798,
    2.44116489296085E-5,
    -0.000467607751163834,
    0.000813305779331304,
    -0.000846751374711447,
    0.000453896495409946,
    0.000287527577319584,
    -0.00109459018551053,
    0.00157164512081116,
    -0.00138705367418495,
    0.000461927810521527,
    0.000925401546625971,
    -0.00219409795238592,
    0.00268387339764152,
    -0.00197028408944099,
    0.000131760576739722,
    0.00217788810193357,
    -0.00392981793928515,
    0.00414997020060235,
    -0.00241084543166628,
    -0.000846630133832004,
    0.00435389050453627,
    -0.00646866153559466,
    0.00589894532379735,
    -0.00239534315242629,
    -0.00292975904846156,
    0.00787865428145303,
    -0.0100159497273034,
    0.00778536994637303,
    -0.00141326527016137,
    -0.00686579414362055,
    0.0134868805234933,
    -0.0149786561286599,
    0.00960484033670776,
    0.00149266686967939,
    -0.0142564354207879,
    0.0229923447047381,
    -0.0226268654767769,
    0.0111272094465212,
    0.00892200078002045,
    -0.0303793215932014,
    0.0434669876723969,
    -0.03904590216319,
    0.0121407657462135,
    0.0356024700081632,
    -0.0955555608836997,
    0.154160319182123,
    -0.196832113159676,
    0.212440611023736,
    -0.196832113159676,
    0.154160319182123,
    -0.0955555608836997,
    0.0356024700081632,
    0.0121407657462135,
    -0.03904590216319,
    0.0434669876723969,
    -0.0303793215932014,
    0.00892200078002045,
    0.0111272094465212,
    -0.0226268654767769,
    0.0229923447047381,
    -0.0142564354207879,
    0.00149266686967939,
    0.00960484033670776,
    -0.0149786561286599,
    0.0134868805234933,
    -0.00686579414362055,
    -0.00141326527016137,
    0.00778536994637303,
    -0.0100159497273034,
    0.00787865428145303,
    -0.00292975904846156,
    -0.00239534315242629,
    0.00589894532379735,
    -0.00646866153559466,
    0.00435389050453627,
    -0.000846630133832004,
    -0.00241084543166628,
    0.00414997020060235,
    -0.00392981793928515,
    0.00217788810193357,
    0.000131760576739722,
    -0.00197028408944099,
    0.00268387339764152,
    -0.00219409795238592,
    0.000925401546625971,
    0.000461927810521527,
    -0.00138705367418495,
    0.00157164512081116,
    -0.00109459018551053,
    0.000287527577319584,
    0.000453896495409946,
    -0.000846751374711447,
    0.000813305779331304,
    -0.000467607751163834,
    2.44116489296085E-5,
    0.000313764407575798,
    -0.000438184587596674,
    0.000356138884167074,
    -0.000158181222615285,
    -4.21379379142045E-5,
    0.000162846089610476,
    -0.000179779351287223,
    0.000120163758497706,
    -3.51625071156962E-5,
    -3.03345116857967E-5,
    5.59444215614934E-5,
    -4.69334685978262E-5,
    2.27511165807092E-5
};