[4f4d892] | 1 | /* |
---|
[a4364b8] | 2 | Copyright (C) 2003-2009 Paul Brossier <piem@aubio.org> |
---|
[4f4d892] | 3 | |
---|
[a4364b8] | 4 | This file is part of aubio. |
---|
[4f4d892] | 5 | |
---|
[a4364b8] | 6 | aubio is free software: you can redistribute it and/or modify |
---|
| 7 | it under the terms of the GNU General Public License as published by |
---|
| 8 | the Free Software Foundation, either version 3 of the License, or |
---|
| 9 | (at your option) any later version. |
---|
[4f4d892] | 10 | |
---|
[a4364b8] | 11 | aubio is distributed in the hope that it will be useful, |
---|
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
| 14 | GNU General Public License for more details. |
---|
| 15 | |
---|
| 16 | You should have received a copy of the GNU General Public License |
---|
| 17 | along with aubio. If not, see <http://www.gnu.org/licenses/>. |
---|
[4f4d892] | 18 | |
---|
[a4364b8] | 19 | */ |
---|
[4f4d892] | 20 | |
---|
| 21 | #include "aubio_priv.h" |
---|
| 22 | #include "types.h" |
---|
| 23 | #include "fvec.h" |
---|
[a4364b8] | 24 | #include "lvec.h" |
---|
[4f4d892] | 25 | #include "temporal/filter.h" |
---|
[c159aeb] | 26 | #include "temporal/a_weighting.h" |
---|
[4f4d892] | 27 | |
---|
[59c046d] | 28 | uint_t |
---|
| 29 | aubio_filter_set_a_weighting (aubio_filter_t * f, uint_t samplerate) |
---|
| 30 | { |
---|
| 31 | aubio_filter_set_samplerate (f, samplerate); |
---|
[a4364b8] | 32 | lvec_t *bs = aubio_filter_get_feedforward (f); |
---|
| 33 | lvec_t *as = aubio_filter_get_feedback (f); |
---|
| 34 | lsmp_t *b = bs->data[0], *a = as->data[0]; |
---|
| 35 | uint_t order = aubio_filter_get_order (f); |
---|
| 36 | |
---|
[59c046d] | 37 | if (order != 7) { |
---|
| 38 | AUBIO_ERROR ("order of A-weighting filter must be 7, not %d\n", order); |
---|
[f530f12] | 39 | return 1; |
---|
[a4364b8] | 40 | } |
---|
| 41 | |
---|
| 42 | /* select coefficients according to sampling frequency */ |
---|
[59c046d] | 43 | switch (samplerate) { |
---|
[a4364b8] | 44 | |
---|
| 45 | case 8000: |
---|
| 46 | b[0] = 6.306209468238731519207362907764036208391189575195312500e-01; |
---|
| 47 | b[1] = -1.261241893647746525886077506584115326404571533203125000e+00; |
---|
| 48 | b[2] = -6.306209468238730408984338282607495784759521484375000000e-01; |
---|
| 49 | b[3] = 2.522483787295493051772155013168230652809143066406250000e+00; |
---|
| 50 | b[4] = -6.306209468238730408984338282607495784759521484375000000e-01; |
---|
| 51 | b[5] = -1.261241893647746525886077506584115326404571533203125000e+00; |
---|
| 52 | b[6] = 6.306209468238731519207362907764036208391189575195312500e-01; |
---|
| 53 | a[0] = 1.000000000000000000000000000000000000000000000000000000e+00; |
---|
| 54 | a[1] = -2.128467193009123015201566886389628052711486816406250000e+00; |
---|
| 55 | a[2] = 2.948668980101234460278192273108288645744323730468750000e-01; |
---|
| 56 | a[3] = 1.824183830735050637628091863007284700870513916015625000e+00; |
---|
| 57 | a[4] = -8.056628943119792385374466903158463537693023681640625000e-01; |
---|
| 58 | a[5] = -3.947497982842933517133587884018197655677795410156250000e-01; |
---|
| 59 | a[6] = 2.098548546080332977137317129745497368276119232177734375e-01; |
---|
| 60 | break; |
---|
| 61 | |
---|
[d1c0554] | 62 | case 11025: |
---|
| 63 | b[0] = 6.014684165832374640459079273568931967020034790039062500e-01; |
---|
| 64 | b[1] = -1.202936833166475150136420779745094478130340576171875000e+00; |
---|
| 65 | b[2] = -6.014684165832373530236054648412391543388366699218750000e-01; |
---|
| 66 | b[3] = 2.405873666332950300272841559490188956260681152343750000e+00; |
---|
| 67 | b[4] = -6.014684165832373530236054648412391543388366699218750000e-01; |
---|
| 68 | b[5] = -1.202936833166475150136420779745094478130340576171875000e+00; |
---|
| 69 | b[6] = 6.014684165832374640459079273568931967020034790039062500e-01; |
---|
| 70 | a[0] = 1.000000000000000000000000000000000000000000000000000000e+00; |
---|
| 71 | a[1] = -2.463578747722854345170162559952586889266967773437500000e+00; |
---|
| 72 | a[2] = 1.096799662705210121060872552334330976009368896484375000e+00; |
---|
| 73 | a[3] = 1.381222210556041218865175324026495218276977539062500000e+00; |
---|
| 74 | a[4] = -1.013875696476876031582037285261321812868118286132812500e+00; |
---|
| 75 | a[5] = -1.839132734476921215982514468123554252088069915771484375e-01; |
---|
| 76 | a[6] = 1.833526393172056623281918064094497822225093841552734375e-01; |
---|
| 77 | break; |
---|
| 78 | |
---|
[a4364b8] | 79 | case 16000: |
---|
| 80 | b[0] = 5.314898298235570806014038680586963891983032226562500000e-01; |
---|
| 81 | b[1] = -1.062979659647114161202807736117392778396606445312500000e+00; |
---|
| 82 | b[2] = -5.314898298235570806014038680586963891983032226562500000e-01; |
---|
| 83 | b[3] = 2.125959319294228322405615472234785556793212890625000000e+00; |
---|
| 84 | b[4] = -5.314898298235570806014038680586963891983032226562500000e-01; |
---|
| 85 | b[5] = -1.062979659647114161202807736117392778396606445312500000e+00; |
---|
| 86 | b[6] = 5.314898298235570806014038680586963891983032226562500000e-01; |
---|
| 87 | a[0] = 1.000000000000000000000000000000000000000000000000000000e+00; |
---|
| 88 | a[1] = -2.867832572992162987191022693878039717674255371093750000e+00; |
---|
| 89 | a[2] = 2.221144410202312347024644623161293566226959228515625000e+00; |
---|
| 90 | a[3] = 4.552683347886614662058946123579517006874084472656250000e-01; |
---|
| 91 | a[4] = -9.833868636162828025248927588108927011489868164062500000e-01; |
---|
| 92 | a[5] = 5.592994142413361402521587706360151059925556182861328125e-02; |
---|
| 93 | a[6] = 1.188781038285612462468421313133148942142724990844726562e-01; |
---|
| 94 | break; |
---|
| 95 | |
---|
| 96 | case 22050: |
---|
| 97 | b[0] = 4.492998504299193784916610638902056962251663208007812500e-01; |
---|
| 98 | b[1] = -8.985997008598388680056245902960654348134994506835937500e-01; |
---|
| 99 | b[2] = -4.492998504299192674693586013745516538619995117187500000e-01; |
---|
| 100 | b[3] = 1.797199401719677958055854105623438954353332519531250000e+00; |
---|
| 101 | b[4] = -4.492998504299192674693586013745516538619995117187500000e-01; |
---|
| 102 | b[5] = -8.985997008598388680056245902960654348134994506835937500e-01; |
---|
| 103 | b[6] = 4.492998504299193784916610638902056962251663208007812500e-01; |
---|
| 104 | a[0] = 1.000000000000000000000000000000000000000000000000000000e+00; |
---|
| 105 | a[1] = -3.229078805225074955131958631682209670543670654296875000e+00; |
---|
| 106 | a[2] = 3.354494881236033787530459449044428765773773193359375000e+00; |
---|
| 107 | a[3] = -7.317843680657351024265722116979304701089859008789062500e-01; |
---|
| 108 | a[4] = -6.271627581807257545420952737913466989994049072265625000e-01; |
---|
| 109 | a[5] = 1.772142005020879151899748649157118052244186401367187500e-01; |
---|
| 110 | a[6] = 5.631716697383508385410522123493137769401073455810546875e-02; |
---|
| 111 | break; |
---|
| 112 | |
---|
[321eb85] | 113 | case 24000: |
---|
| 114 | b[0] = 4.256263892891054001488271296693710610270500183105468750e-01; |
---|
| 115 | b[1] = -8.512527785782106892753517968230880796909332275390625000e-01; |
---|
| 116 | b[2] = -4.256263892891054556599783609271980822086334228515625000e-01; |
---|
| 117 | b[3] = 1.702505557156421378550703593646176159381866455078125000e+00; |
---|
| 118 | b[4] = -4.256263892891054556599783609271980822086334228515625000e-01; |
---|
| 119 | b[5] = -8.512527785782106892753517968230880796909332275390625000e-01; |
---|
| 120 | b[6] = 4.256263892891054001488271296693710610270500183105468750e-01; |
---|
| 121 | a[0] = 1.000000000000000000000000000000000000000000000000000000e+00; |
---|
| 122 | a[1] = -3.325996004241962733516402295208536088466644287109375000e+00; |
---|
| 123 | a[2] = 3.677161079286316969216841243905946612358093261718750000e+00; |
---|
| 124 | a[3] = -1.106476076828482035807610373012721538543701171875000000e+00; |
---|
| 125 | a[4] = -4.726706734908718843257702246773988008499145507812500000e-01; |
---|
| 126 | a[5] = 1.861941760230954034938122276798821985721588134765625000e-01; |
---|
| 127 | a[6] = 4.178771337829546850262119050967157818377017974853515625e-02; |
---|
| 128 | break; |
---|
| 129 | |
---|
| 130 | case 32000: |
---|
| 131 | b[0] = 3.434583386824304196416335344110848382115364074707031250e-01; |
---|
| 132 | b[1] = -6.869166773648609503055695313378237187862396240234375000e-01; |
---|
| 133 | b[2] = -3.434583386824303641304823031532578170299530029296875000e-01; |
---|
| 134 | b[3] = 1.373833354729721900611139062675647437572479248046875000e+00; |
---|
| 135 | b[4] = -3.434583386824303641304823031532578170299530029296875000e-01; |
---|
| 136 | b[5] = -6.869166773648609503055695313378237187862396240234375000e-01; |
---|
| 137 | b[6] = 3.434583386824304196416335344110848382115364074707031250e-01; |
---|
| 138 | a[0] = 1.000000000000000000000000000000000000000000000000000000e+00; |
---|
| 139 | a[1] = -3.656446043233668063976438133977353572845458984375000000e+00; |
---|
| 140 | a[2] = 4.831468450652579349480220116674900054931640625000000000e+00; |
---|
| 141 | a[3] = -2.557597496581567764195597192156128585338592529296875000e+00; |
---|
| 142 | a[4] = 2.533680394205302666144064005493419244885444641113281250e-01; |
---|
| 143 | a[5] = 1.224430322452567110325105659285327419638633728027343750e-01; |
---|
| 144 | a[6] = 6.764072168342137418572956875095769646577537059783935547e-03; |
---|
| 145 | break; |
---|
| 146 | |
---|
[a4364b8] | 147 | case 44100: |
---|
[321eb85] | 148 | b[0] = 2.557411252042575133813784304948057979345321655273437500e-01; |
---|
[a4364b8] | 149 | b[1] = -5.114822504085150267627568609896115958690643310546875000e-01; |
---|
| 150 | b[2] = -2.557411252042575133813784304948057979345321655273437500e-01; |
---|
| 151 | b[3] = 1.022964500817030053525513721979223191738128662109375000e+00; |
---|
| 152 | b[4] = -2.557411252042575133813784304948057979345321655273437500e-01; |
---|
| 153 | b[5] = -5.114822504085150267627568609896115958690643310546875000e-01; |
---|
| 154 | b[6] = 2.557411252042575133813784304948057979345321655273437500e-01; |
---|
| 155 | a[0] = 1.000000000000000000000000000000000000000000000000000000e+00; |
---|
| 156 | a[1] = -4.019576181115832369528106937650591135025024414062500000e+00; |
---|
| 157 | a[2] = 6.189406442920693862674852425698190927505493164062500000e+00; |
---|
| 158 | a[3] = -4.453198903544116404873420833609998226165771484375000000e+00; |
---|
| 159 | a[4] = 1.420842949621876627475103305187076330184936523437500000e+00; |
---|
| 160 | a[5] = -1.418254738303044160119270600262098014354705810546875000e-01; |
---|
| 161 | a[6] = 4.351177233495117681327801761881346465088427066802978516e-03; |
---|
[321eb85] | 162 | break; |
---|
| 163 | |
---|
| 164 | case 48000: |
---|
| 165 | b[0] = 2.343017922995132285013397677175817079842090606689453125e-01; |
---|
| 166 | b[1] = -4.686035845990265125138307666929904371500015258789062500e-01; |
---|
| 167 | b[2] = -2.343017922995132007457641520886681973934173583984375000e-01; |
---|
| 168 | b[3] = 9.372071691980530250276615333859808743000030517578125000e-01; |
---|
| 169 | b[4] = -2.343017922995132007457641520886681973934173583984375000e-01; |
---|
| 170 | b[5] = -4.686035845990265125138307666929904371500015258789062500e-01; |
---|
| 171 | b[6] = 2.343017922995132285013397677175817079842090606689453125e-01; |
---|
| 172 | a[0] = 1.000000000000000000000000000000000000000000000000000000e+00; |
---|
| 173 | a[1] = -4.113043408775872045168853219365701079368591308593750000e+00; |
---|
| 174 | a[2] = 6.553121752655050258340452273841947317123413085937500000e+00; |
---|
| 175 | a[3] = -4.990849294163385074796224216697737574577331542968750000e+00; |
---|
| 176 | a[4] = 1.785737302937575599059982778271660208702087402343750000e+00; |
---|
| 177 | a[5] = -2.461905953194876706113802811159985139966011047363281250e-01; |
---|
| 178 | a[6] = 1.122425003323123879339640041052916785702109336853027344e-02; |
---|
| 179 | break; |
---|
| 180 | |
---|
| 181 | case 88200: |
---|
| 182 | b[0] = 1.118876366882113199130444058937428053468465805053710938e-01; |
---|
| 183 | b[1] = -2.237752733764226120705131961585721001029014587402343750e-01; |
---|
| 184 | b[2] = -1.118876366882113337908322137081995606422424316406250000e-01; |
---|
| 185 | b[3] = 4.475505467528452241410263923171442002058029174804687500e-01; |
---|
| 186 | b[4] = -1.118876366882113337908322137081995606422424316406250000e-01; |
---|
| 187 | b[5] = -2.237752733764226120705131961585721001029014587402343750e-01; |
---|
| 188 | b[6] = 1.118876366882113199130444058937428053468465805053710938e-01; |
---|
| 189 | a[0] = 1.000000000000000000000000000000000000000000000000000000e+00; |
---|
| 190 | a[1] = -4.726938565651158441482948546763509511947631835937500000e+00; |
---|
| 191 | a[2] = 9.076897983832765248735086061060428619384765625000000000e+00; |
---|
| 192 | a[3] = -9.014855113464800950850985827855765819549560546875000000e+00; |
---|
| 193 | a[4] = 4.852772261031594425162438710685819387435913085937500000e+00; |
---|
| 194 | a[5] = -1.333877820398965186043938047077972441911697387695312500e+00; |
---|
| 195 | a[6] = 1.460012549591642450064199465487035922706127166748046875e-01; |
---|
| 196 | break; |
---|
[a4364b8] | 197 | |
---|
| 198 | case 96000: |
---|
| 199 | b[0] = 9.951898975972744976203898659150581806898117065429687500e-02; |
---|
| 200 | b[1] = -1.990379795194548995240779731830116361379623413085937500e-01; |
---|
| 201 | b[2] = -9.951898975972744976203898659150581806898117065429687500e-02; |
---|
| 202 | b[3] = 3.980759590389097990481559463660232722759246826171875000e-01; |
---|
| 203 | b[4] = -9.951898975972744976203898659150581806898117065429687500e-02; |
---|
| 204 | b[5] = -1.990379795194548995240779731830116361379623413085937500e-01; |
---|
| 205 | b[6] = 9.951898975972744976203898659150581806898117065429687500e-02; |
---|
| 206 | a[0] = 1.000000000000000000000000000000000000000000000000000000e+00; |
---|
| 207 | a[1] = -4.802203044225376693532325589330866932868957519531250000e+00; |
---|
| 208 | a[2] = 9.401807218627226347962277941405773162841796875000000000e+00; |
---|
| 209 | a[3] = -9.566143943569164420637207513209432363510131835937500000e+00; |
---|
| 210 | a[4] = 5.309775930392619081032989925006404519081115722656250000e+00; |
---|
| 211 | a[5] = -1.517333360452622237346531619550660252571105957031250000e+00; |
---|
| 212 | a[6] = 1.740971994228911745583587844521389342844486236572265625e-01; |
---|
| 213 | break; |
---|
| 214 | |
---|
| 215 | case 192000: |
---|
| 216 | b[0] = 3.433213424548713782469278044118254911154508590698242188e-02; |
---|
| 217 | b[1] = -6.866426849097426177159775306790834292769432067871093750e-02; |
---|
| 218 | b[2] = -3.433213424548714476358668434841092675924301147460937500e-02; |
---|
| 219 | b[3] = 1.373285369819485235431955061358166858553886413574218750e-01; |
---|
| 220 | b[4] = -3.433213424548714476358668434841092675924301147460937500e-02; |
---|
| 221 | b[5] = -6.866426849097426177159775306790834292769432067871093750e-02; |
---|
| 222 | b[6] = 3.433213424548713782469278044118254911154508590698242188e-02; |
---|
| 223 | a[0] = 1.000000000000000000000000000000000000000000000000000000e+00; |
---|
| 224 | a[1] = -5.305923689674640009172890131594613194465637207031250000e+00; |
---|
| 225 | a[2] = 1.165952437466175695135461864992976188659667968750000000e+01; |
---|
| 226 | a[3] = -1.357560092700591525272102444432675838470458984375000000e+01; |
---|
| 227 | a[4] = 8.828906932824192921316353022120893001556396484375000000e+00; |
---|
| 228 | a[5] = -3.039490120988216581565666274400427937507629394531250000e+00; |
---|
| 229 | a[6] = 4.325834301870381537469256727490574121475219726562500000e-01; |
---|
| 230 | break; |
---|
| 231 | |
---|
[59c046d] | 232 | default: |
---|
| 233 | AUBIO_ERROR ("sampling rate of A-weighting filter is %d, should be one of\ |
---|
| 234 | 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000, 88200, 96000, 192000.\n", samplerate); |
---|
[f530f12] | 235 | return 1; |
---|
[a4364b8] | 236 | |
---|
[4f4d892] | 237 | } |
---|
[a4364b8] | 238 | |
---|
[f530f12] | 239 | return 0; |
---|
[a4364b8] | 240 | } |
---|
| 241 | |
---|
[59c046d] | 242 | aubio_filter_t * |
---|
| 243 | new_aubio_filter_a_weighting (uint_t channels, uint_t samplerate) |
---|
| 244 | { |
---|
| 245 | aubio_filter_t *f = new_aubio_filter (7, channels); |
---|
| 246 | aubio_filter_set_a_weighting (f, samplerate); |
---|
[4f4d892] | 247 | return f; |
---|
| 248 | } |
---|