dec3iir3.h

各种工程计算的库函数

/*

    IIR Decimation filter for rate 3
    Copyright (C) 2002 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


/* f1: 0.1625,  f2: 0.16667, r: 0.1, a: 96, t: elliptic */

/*static const long lDec3IIRSize = 9l;

static const float fpDec3IIRCoeffs[][5] = {
{ // 0
    0.0553592475772217,
    0.058373986304096,
    0.0553592475772217,
    1.41200440567841,
    -0.581096887136946
},
{ // 1
    0.194732981262029,
    -0.0044378628822179,
    0.194732981262029,
    1.3080501174319,
    -0.693078217073741
},
{ // 2
    0.414789892503207,
    -0.228226012897661,
    0.414789892503207,
    1.20397555745957,
    -0.805329329568326
},
{ // 3
    0.62790544256367,
    -0.496800997404192,
    0.62790544256367,
    1.12828496567778,
    -0.887294853400925
},
{ // 4
    0.782669104604529,
    -0.70875361724853,
    0.782669104604529,
    1.08176961753189,
    -0.938354209492414
},
{ // 5
    0.877774458641298,
    -0.843788971512166,
    0.877774458641298,
    1.05612809645174,
    -0.967888042222167
},
{ // 6
    0.929803490904114,
    -0.918599848170477,
    0.929803490904114,
    1.04384280350973,
    -0.984849937147478
},
{ // 7
    0.953764494039992,
    -0.952548243134686,
    0.953764494039992,
    1.04058369517249,
    -0.995564440117791
},
{ // 8
    0.135482390020302,
    0.135482390020302,
    0,
    0.729035219959397,
    0
}
};


static const double dpDec3IIRCoeffs[][5] = {
{ // 0
    0.0553592475772217,
    0.058373986304096,
    0.0553592475772217,
    1.41200440567841,
    -0.581096887136946
},
{ // 1
    0.194732981262029,
    -0.0044378628822179,
    0.194732981262029,
    1.3080501174319,
    -0.693078217073741
},
{ // 2
    0.414789892503207,
    -0.228226012897661,
    0.414789892503207,
    1.20397555745957,
    -0.805329329568326
},
{ // 3
    0.62790544256367,
    -0.496800997404192,
    0.62790544256367,
    1.12828496567778,
    -0.887294853400925
},
{ // 4
    0.782669104604529,
    -0.70875361724853,
    0.782669104604529,
    1.08176961753189,
    -0.938354209492414
},
{ // 5
    0.877774458641298,
    -0.843788971512166,
    0.877774458641298,
    1.05612809645174,
    -0.967888042222167
},
{ // 6
    0.929803490904114,
    -0.918599848170477,
    0.929803490904114,
    1.04384280350973,
    -0.984849937147478
},
{ // 7
    0.953764494039992,
    -0.952548243134686,
    0.953764494039992,
    1.04058369517249,
    -0.995564440117791
},
{ // 8
    0.135482390020302,
    0.135482390020302,
    0,
    0.729035219959397,
    0
}
};*/


/* f1: 0.1625,  f2: 0.16667, r: 0.1, a: 120, t: elliptic */

static const long lDec3IIRSize = 10l;

static const float fpDec3IIRCoeffs[][5] = {
{ // 0
    0.0195383874094136,
    0.034709168326835,
    0.0195383874094136,
    1.52205680882593,
    -0.595842751971593
},
{ // 1
    0.0775083098356501,
    0.0541083468341002,
    0.0775083098356501,
    1.44727914242865,
    -0.656404108934051
},
{ // 2
    0.215809128218758,
    -0.0245140773417836,
    0.215809128218758,
    1.33791094096574,
    -0.745015120061473
},
{ // 3
    0.406997186244864,
    -0.220384854604817,
    0.406997186244864,
    1.23493107901914,
    -0.828540596904051
},
{ // 4
    0.593321044027043,
    -0.451562255861173,
    0.593321044027043,
    1.15692017679011,
    -0.89200000898302
},
{ // 5
    0.739192079066588,
    -0.648281378458115,
    0.739192079066588,
    1.10471555556931,
    -0.934818335244372
},
{ // 6
    0.838926614711538,
    -0.788347948422064,
    0.838926614711538,
    1.07243308238359,
    -0.961938363384599
},
{ // 7
    0.901213028872304,
    -0.877551640777216,
    0.901213028872304,
    1.05384328046346,
    -0.978717697430855
},
{ // 8
    0.936888707969357,
    -0.9289095464048,
    0.936888707969357,
    1.044465973685,
    -0.989333843218918
},
{ // 9
    0.954070918585919,
    -0.953184503752558,
    0.954070918585919,
    1.04180879307493,
    -0.996766126494216
}
};


static const double dpDec3IIRCoeffs[][5] = {
{ // 0
    0.0195383874094136,
    0.034709168326835,
    0.0195383874094136,
    1.52205680882593,
    -0.595842751971593
},
{ // 1
    0.0775083098356501,
    0.0541083468341002,
    0.0775083098356501,
    1.44727914242865,
    -0.656404108934051
},
{ // 2
    0.215809128218758,
    -0.0245140773417836,
    0.215809128218758,
    1.33791094096574,
    -0.745015120061473
},
{ // 3
    0.406997186244864,
    -0.220384854604817,
    0.406997186244864,
    1.23493107901914,
    -0.828540596904051
},
{ // 4
    0.593321044027043,
    -0.451562255861173,
    0.593321044027043,
    1.15692017679011,
    -0.89200000898302
},
{ // 5
    0.739192079066588,
    -0.648281378458115,
    0.739192079066588,
    1.10471555556931,
    -0.934818335244372
},
{ // 6
    0.838926614711538,
    -0.788347948422064,
    0.838926614711538,
    1.07243308238359,
    -0.961938363384599
},
{ // 7
    0.901213028872304,
    -0.877551640777216,
    0.901213028872304,
    1.05384328046346,
    -0.978717697430855
},
{ // 8
    0.936888707969357,
    -0.9289095464048,
    0.936888707969357,
    1.044465973685,
    -0.989333843218918
},
{ // 9
    0.954070918585919,
    -0.953184503752558,
    0.954070918585919,
    1.04180879307493,
    -0.996766126494216
}
};