PR CTICA 5 : AN LISIS DE SONIDOS

Lab. de Acústica: Análisis de sonidos
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KPFWUVTKCNGU XQ\ JWOCPC GVE [ ECFC WPC FG GNNCU NQ JCEG GP WP TCPIQ FG HTGEWGPEKCU
FKUVKPVCU [ EQP WPC EQORQUKEKÎP HTGEWGPEKCN XCTKCFC #UÈ RQFGOQU VGPGT VQPQU RWTQU WPC
ÕPKEC HTGEWGPEKC UQPKFQU RGTKÎFKEQU GURGEVTQ FKUETGVQ FG HTGEWGPEKCU [ UQPKFQU PQ
RGTKÎFKEQU
GURGEVTQEQPVKPWQFGHTGEWGPEKCU
&GHKPKOQUCEQPVKPWCEKÎPCNIWPQUFGNQUEQPEGRVQUO¶UTGNGXCPVGU
#6QPQRWTQNCHWGPVGQUEKNCETGCPFQGPUWURTQZKOKFCFGUWPCXCTKCEKÎPFGRTGUKÎPVKRQ
UGPQQEQUGPQUGTGRTGUGPVCRQTWPCHWPEKÎPOCVGO¶VKECFGNCHQTOC
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S FRV ZW I 5QPGLGORNQUFGGUVCUHWGPVGUNQUQUEKNCFQTGUGNGEVTÎPKEQUCNVCXQEGUCNKOGPVCFQURQT
IGPGTCFQTGUFGUGÌCNUGPQKFCNGVE
$ 8KDTCEKQPGU RGTKÎFKECU NCU ECTCEVGTÈUVKECU FG NC HWGPVG ETGCP XCTKCEKQPGU FG RTGUKÎP
RGTKÎFKECU RGTQ PQ CTOÎPKECU FG OQFQ SWG NQU ECODKQU FG RTGUKÎP UG RWGFGP RQPGT EQOQ
UWRGTRQUKEKQPGU FGWPEQPLWPVQFKUETGVQFGVQPQURWTQU0QTOCNOGPVGGZKUVGWPCHTGEWGPEKC
OÈPKOCQHWPFCOGPVCN[QVTCUSWGRWGFGPUGTOÕNVKRNQUFGNHWPFCOGPVCN
CTOÎPKEQUQPQUGT
GZCEVCOGPVGOÕNVKRNQU
UQDTGVQPQUFGRGPFKGPFQFGNCURGEWNKCTKFCFGUFGNCHWGPVG5GRWGFG
GUETKDKT
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FRV Z N W I N FQPFGZ GUNCHTGEWGPEKCHWPFCOGPVCN[GPIGPGTCNRM RM
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OGPVGNCUXQECNGU
% 8KDTCEKQPGU PQ RGTKÎFKECU NC HWGPVG ETGC XCTKCEKQPGU FG RTGUKÎP FG OQFQ SWG GUVCU
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PQODTGIGPÃTKEQFGTWKFQU
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O¶SWKPCUKPFWUVTKCNGU
2CUGOQU C FGUETKDKT DTGXGOGPVG GN TWKFQ 'P IGPGTCN NC KPVGPUKFCF CEÕUVKEC RCTC NC
OC[QTÈC FG NQU UQPKFQU PQ GUV¶ FKUVTKDWKFC WPKHQTOGOGPVG UQDTG NC HTGEWGPEKC [ GU
EQPXGPKGPVGFGUETKDKTNCFKUVTKDWEKÎPRQTOGFKQFGNCFGPUKFCFGURGEVTCN
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Lab de Acústica: Análisis de sonidos
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OGPQTGUFQPFGGN0+'UGCTGNCVKXCOGPVGEQPUVCPVGGPVQPEGUGN0+FGECFCKPVGTXCNQUGECNEWNC
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RQTUGTOGPQUKTTKVCPVGSWGGNTWKFQDNCPEQ
Lab. de Acústica: Análisis de sonidos
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RGTKÎFKEQ [ UG FGPQOKPCP VQPQU INQVCNGU 5K V GU GN RGTKQFQ FG NC UGÌCN CRCTGEGT¶ WPC
HTGEWGPEKCHWPFCOGPVCN[QVTCUFGPQOKPCFCUHTGEWGPEKCUCTOÎPKECUGUFGEKT
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RQUKEKÎP HKLC GU FGEKT GUVTGEJCP GN RCUQ FGN CKTG RTQXGPKGPVG FG NQU RWNOQPGU .C UGÌCN
CEÕUVKECIGPGTCFCGUFGVKRQCRGTKÎFKEC
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CVGPÕC QDUGTX¶PFQUG RCTC NCU XQECNGU FQPFG GP GN VTCEVQ PQ UG RTGUGPVCP EQPUVTKEEKQPGU
CRTGEKCDNGU ITWRQU FG HTGEWGPEKCU EW[C KPVGPUKFCF UQDTGUCNG FGN TGUVQ # GUVQU ITWRQU FG
HTGEWGPEKCUNQUNNCOCOQUHQTOCPVGU&GGUVQUUGRWGFGPGZVTCGTRCT¶OGVTQUHWPFCOGPVCNGU
SWGUQPNCHTGEWGPEKCEGPVTCNNCKPVGPUKFCF[GNCPEJQFGDCPFC
'P NCU EQPUQPCPVGU CNIWPC RCTVG GPVTG NC INQVKU [ NQU NCDKQU UWHTG WP GUVTGEJCOKGPVQ
CRTGEKCDNG[RQTVCPVQNCHWPEKÎPFGNCECLCFGTGUQPCPEKCUGCRGSWGÌCUKGPFQRQTVCPVQFKHÈEKN
GNFGHKPKTWPQURCT¶OGVTQUSWGPQUECTCEVGTKEGPGUVQUUQPKFQU#FGO¶UVKGPGPGNCITCXCPVGSWG
PQUGRWGFGPRTQFWEKTCKUNCFCOGPVG[EQPXKGPGGUVWFKCTUWUECTCEVGTÈUVKECUEWCPFQXCPGPVTG
FQUUQPKFQUXQE¶NKEQU
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7PGSWKRQD¶UKEQRCTCCPCNK\CTUQPKFQUGUVCT¶EQORWGUVQRQTWPOKETÎHQPQGPECTICFQ
FG VTCPUHQTOCT NC UGÌCN CEÕUVKEC GP GNÃEVTKEC WP CEQPFKEKQPCFQT SWG EQPHQTOG NC UGÌCN
GNÃEVTKECRCTCRQFGTUGTVTCVCFCRQTWPEQPXGTUQTCPCNÎIKEQFKIKVCNSWGNCEQPXKGTVCGPWPC
Lab de Acústica: Análisis de sonidos
UGÌCNFKUETGVC
PÕOGTQUSWGUGT¶PNQUFCVQUFGGPVTCFCRCTCSWGEQPWP QTFGPCFQTRQFCOQU
ECNEWNCTNQURCT¶OGVTQUFGNCUGÌCN'PNCHKIWTCCFLWPVCUGOWGUVTCGNRTQEGUQ
.CUECTCEVGTÈUVKECUSWGFGHKPGPNQUOKETÎHQPQUUQP
.KPGCNKFCFFGNCUCNKFCGPHWPEKÎPFGNCGPVTCFC
+PFGRGPFGPEKCFGNCUCNKFCGPEWCNSWKGTHTGEWGPEKC
+PVGPUKFCFO¶ZKOC[OÈPKOCCNCSWGTGURQPFGEQTTGEVCOGPVG
&KTGEVKXKFCFFGNOKETÎHQPQ
SWGFGDGPUGTNQOGLQTRQUKDNGGPHWPEKÎPFGNITCFQFGRTGEKUKÎPTGSWGTKFC
.CU ECTCEVGTÈUVKECU FGN CEQPFKEKQPCFQT UG TGFWEGP C CORNKHKECT NC UGÌCN GNÃEVTKEC FGN
OKETÎHQPQ
RCUCTFGNQTFGPFGO8CNQTFGPFG8[SWGNCTGURWGUVCUGCKIWCNRCTCVQFCUNCU
HTGEWGPEKCU
'PNCCEVWCNKFCFGUEQPXGPKGPVGGNVTCVCOKGPVQFKIKVCNFGNCUGÌCNSWGVTCVCCGUVCEQOQ
WPEQPLWPVQFGPÕOGTQUUKGPFQNCECTCEVGTÈUVKECO¶UTGNGXCPVGGNITCFQFGRTGEKUKÎPFG NCU
OWGUVTCU[RCTCGNNQUGWVKNK\CPFKUVKPVQUEQPXGTUQTGUCPCNÎIKEQUFKIKVCNGU.CUECTCEVGTÈUVKECU
HWPFCOGPVCNGUFGGUVQUUQP
(TGEWGPEKCFGOWGUVTGQFGNCUGÌCNCPCNÎIKEC
0FGDKVUFGTGUQNWEKÎPFGNCEQPXGTUKÎP
.CHTGEWGPEKCFGOWGUVTGQFGDGUGTEQOQOÈPKOQGNFQDNGFGNCHTGEWGPEKCO¶ZKOC
SWGEQPVGPICNCUGÌCNCCPCNK\CT
ETKVGTKQFG0[SWKUV
'PEWCPVQCNPFGDKVUNQWUWCNGUWPQFGDKVUNQSWGEQPNNGXC XCNQTGU
FKHGTGPVGUFGNCUGÌCN
Lab. de Acústica: Análisis de sonidos
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.QU RCT¶OGVTQU FG NQU UQPKFQU UG RWGFGP ECNEWNCT RQT OGFKQ FG WPC UGTKG FG
CNIQTKVOQUDCUCFQUGPFQURTQEGFKOKGPVQUD¶UKEQUSWGUQP
.2% 2TGFKEEKÎP NKPGCN DCUCFQ GP SWG NQU UQPKFQU FGPVTQ FG WP QTFGP UQP UGÌCNGU
NKPGCNOGPVGRTGFGEKDNGU[RQTVCPVQGNXCNQTFGWPCOWGUVTCGPWPKPUVCPVGVP UGRWGFGECNEWNCT
CRCTVKTFGNXCNQTFGNCUOWGUVTCUGPKPUVCPVGUCPVGTKQTGURQTOGFKQFGWPCEQODKPCEKÎPNKPGCN
FGWPFGVGTOKPCFQPÕOGTQFGXCNQTGUGUFGEKT
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GN CNIQTKVOQ .2% ECNEWNC NQU RCT¶OGVTQU CK FG NC EQODKPCEKÎP SWG UQP FG CRNKECEKÎP GP
CP¶NKUKUFGXQEGUUÈPVGUKUFGXQ\CTVKHKEKCN
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%CNEWNCGNGURGEVTQFGNCUGÌCNCEÕUVKECGPGUVWFKQWVKNK\CPFQEQOQFCVQUFGGPVTCFC
0FGOWGUVTCU
0EQPXKGPGSWGUGCWPCRQVGPEKCFG
RG 8CNQTGUFGNCUOWGUVTCU
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FCPFQEQOQTGUWNVCFQ
4GUQNWEKÎPGPHTGEWGPEKCFGNGURGEVTQ
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0FGHTGEWGPEKCUECNEWNCFCU
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8CNQTFGNCKPVGPUKFCFFGECFCWPCFGGUVCUHTGEWGPEKCU
#.)14+6/1((6 5KPVGVK\CWPUQPKFQCRCTVKTFGNGURGEVTQFGNOKUOQUKGPFQRQTVCPVQNCKPXGTUCFGNC
CPVGTKQTRQTVCPVQNQSWGCNNÈGTCUCNKFCCSWÈGUGPVTCFC[TGEÈRTQECOGPVG
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'NQDLGVKXQGUGNE¶NEWNQFGNCHTGEWGPEKCHWPFCOGPVCNFGWPUQPKFQRGTKÎFKEQUKGPFQ
WPCEQODKPCEKÎPFGNQUCPVGTKQTGU
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5WQDLGVKXQGUECNEWNCTCRCTVKTFGNCEQPHKIWTCEKÎPCPCVÎOKECFGNVTCEVQNCUHTGEWGPEKCU
SWGUGCORNKHKECP[NCUSWGUGCVGPÕCPUKTGCNOGPVGCTVKEWN¶UGOQUWPUQPKFQXQE¶NKEQEQPGUG
VTCEVQ2GTOKVGECNEWNCTNQUHQTOCPVGU FGNQUUQPKFQUXQE¶NKEQU
Lab de Acústica: Análisis de sonidos
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4GCNK\CNCHWPEKÎPEQPVTCTKCSWGGNCPVGTKQT
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FKTGEVCOGPVGNQUHQTOCPVGU FGNQUUQPKFQUXQE¶NKEQU
/WEJQUFGGUVQUCNIQTKVOQUGUV¶PKORNGOGPVCFQUGPGNUQHVYCTGFGCRNKECEKÎP#0#
510 [81:510RCTCGNE¶NEWNQFGRCT¶OGVTQUTGNGXCPVGUFGNQUUQPKFQURTGUGPVCPFQNQU
TGUWNVCFQUFGWPCOCPGTCIT¶HKECEQPWPCUCNKFCFKTGEVCCKORTGUQTCRCTCWPCH¶EKNNGEVWTCFG
NQUTGUWNVCFQU
Lab. de Acústica: Análisis de sonidos
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.CRTKOGTCRCTVGEQPUKUVGGPFGVGTOKPCTGNVKRQFGUQPKFQSWGJC[EQPVGPKFQGPWPC
UGTKG FG HKEJGTQU SWG UG RTQRQTEKQPCP GP WP FKUSWGVG 2CTC GNNQ FGDG CTTCPECT GN RTQITCOC
RQPKGPFQWPCNNCXGFGJCTFYCTGGPGNRWGTVQRCTCNGNQ
GNFGNCKORTGUQTC [UKVW¶PFQUGGP
GNUKUVGOCQRGTCVKXQ /5&15QGP9+0&195GLGEWVCTGNRTQITCOC#0#510
&GPVTQFGNFKTGEVQTKQTCÈ\FGNFKUEQFWTQ
%> RCUGCNFKTGEVQTKQ#0#510 EFCPC
UQP [FGPVTQFGÃNCTTCPECTGNGLGEWVCDNG#0#510
CPCUQP
#RCTVKTFGCSWÈ GNRTQITCOCNGRTGUGPVCT¶WPCUGTKGFGQREKQPGUEQOQUQP
)4#$#%+¦0 SWGRGTOKVGITCDCTWPUQPKFQGPWPHKEJGTQ9#8
%#.+$4#&1 SWGRGTOKVGIGPGTCTWPHKEJGTQSWGUKTXGFGTGHGTGPEKCRCTCGNVTCVCOKGPVQFG
QVTQUTWKFQU
#0.+5+5 SWGRGTOKVGCPCNK\CTGNUQPKFQEQPVGPKFQGPWPHKEJGTQ9#8
%10(+)74# SWGRGTOKVGCEVWCTUQDTGNCHQTOCFGGZRQTVCTNQUTGUWNVCFQU
5#.+4 EKGTTCGNRTQITCOC
'PGUVCRCTVGVCPUQNQPQUKPVGTGUCNCRCTVGFG#0.+5+5 RQTNQSWGRKPEJCTGOQUEQP
GNTCVÎPGPGUCRCTVG'NUKUVGOCPQURKFGWPHKEJGTQRCTCNCEQORCTCEKÎPSWGGUV¶GPGNOKUOQ
FKTGEVQTKQ FG VTCDCLQ [ SWG UG NNCOC TGH RQT VCPVQ VGENGCTGOQU FKEJQ PQODTG [ GN RTKOGT
HKEJGTQRTQDNGOC'UVQUGUV¶PGPWPFKUSWGVGSWGUWOKPKUVTCGNRTQHGUQT[FGNQUEWCNGUJC[
SWGCPCNK\CTWPVQVCNFGCTEJKXQUSWGRWGFGPUGTCSWGNNQUEW[QPQODTGGORKGEGRQT+ QRQT
2 GN RTQHGUQT FKT¶ EWCNGU JC[ SWG CPCNK\CT %WCPFQ PQU RKFC GN PQODTG FGN HKEJGTQ C
CPCNK\CTVGENGCTGOQUC>PQODTG.QUPQODTGUFGNQUHKEJGTQUUQP
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2&2%2525252-52%2525
7PCXG\ECTICFQGNHKEJGTQUGXKUWCNK\CGPNCRCPVCNNC[RTGUGPVCWPCUGTKGFGQREKQPGU
GPVTGNCUSWGFGUVCECP
'/+6+4RGTOKVGGUEWEJCTGNUQPKFQEQPVGPKFQGPGNHKEJGTQ
((6RGTOKVGECNEWNCTNCVTCPUHQTOCFCT¶RKFCFG(QWTKGTGPWPKPVGTXCNQOÈPKOQ
241/'&+1 KIWCN SWG ((6 RGTQ EQOQ EQODKPCEKÎP FG ((6U GP NQU FKUVKPVQU KPVGTXCNQU
JCUVCEQORNGVCTNC\QPCUGNGEEKQPCFC
Lab de Acústica: Análisis de sonidos
'NGIKTNQSWGUGSWKGTC[UGIWKTKPUVTWEEKQPGUFGRCPVCNNC
%QPNCUQREKQPGU((6 [241/'&+1 UGQDVKGPGGPRCPVCNNCGNGURGEVTQGPHTGEWGPEKC
FGN TWKFQ EQPUKFGTCFQ SWG RWGFG RTGUGPVCTUG GP RCPVCNNC GP NCU QREKQPGU FG $#0&#
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'PNCQREKÎP((6 VKGPGGNCRCTVCFQ24+06 EQPGNEWCNRQFT¶QDVGPGTNCKORTGUKÎPFGN
GURGEVTQ ECNEWNCFQ FGN OKUOQ OQFQ NC QREKÎP 241/'&+1 GP GUVC VCODKÃP VKGPG NC
RQUKDKNKFCF FG )7#4&#4 RCTC VTCVCT GN HKEJGTQ EQP ':%'. Q EQP NC QREKÎP FGN RTQRKQ
RTQITCOCRGTQSWGPQWUCTGOQU
&GECFCHKEJGTQGZVTCGTNCKPHQTOCEKÎPO¶UTGNGXCPVGEQOQRWGFGPUGTHTGEWGPEKCUG
KPVGPUKFCFGU O¶U KORQTVCPVGU UK GU SWG NCU JC[ VKRQU FG UQPKFQU SWÃ TGRTGUGPVCP
EQORCTCEKÎP GPVTG GNNQU UK GU SWG UQP EQORCTCDNGU TGNCEKQPGU EQP GUVWFKQU VGÎTKEQU SWG
EQPQ\ECU CNIWPCU IT¶HKECU SWG EQPUKFGTGU KPVGTGUCPVGU [ EWCNSWKGT QVTC CRQTVCEKÎP RGTUQPCN
SWGEQPUKFGTGUPGEGUCTKCEQPXKUVCUCKFGPVKHKECTEQORNGVCOGPVGGNUQPKFQGPGUVWFKQ
%QOQ CNIWPQ FG NQU UQPKFQU RTQXKGPG FG KPUVTWOGPVQU OWUKECNGU C EQPVKPWCEKÎP UG
RTGUGPVCWPCVCDNCEQPNQUXCNQTGUFGNCUHTGEWGPEKCU[NCUPQVCUOWUKECNGU
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Lab. de Acústica: Análisis de sonidos
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Lab de Acústica: Análisis de sonidos
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Lab. de Acústica: Análisis de sonidos
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Lab de Acústica: Análisis de sonidos
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