Loudness matching multichannel audio programme ... - BBC

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Transcript of Loudness matching multichannel audio programme ... - BBC

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jX8 G2p2H �/DmbiK2Mib6B;m`2 9 b?Qrb i?2 K2�M �/DmbiK2Mi �TTHB2/ iQ 2�+? biBKmHmb iQ K�i+? i?2 HQm/M2bb Q7 i?2 }p2@+?�MM2H `272`2M+2- rBi? N8W +QM}/2M+2 BMi2`p�Hb U+�H+mH�i2/ mbBM; i?2 t@/Bbi`B#miBQMV 7Q` 2�+? biBK@mHmbX �HQM;bB/2 i?2 `2bmHib- �M 2``Q` #�` b?QrBM; i?2 bBx2 Q7 i?2 +QM}/2M+2 BMi2`p�H 7Q` i?2 KQ/B}2/?B//2M `272`2M+2 ?�b #22M THQii2/- i`�MbTQb2/ iQ #2 +2Mi`2/ �i i?2 K2�M �/DmbiK2Mi 7Q` 2�+? biBK@mHmbX h?Bb +�M #2 mb2/ iQ ;Bp2 �M BM/B+�iBQM Q7 i?2 +QM}/2M+2 BM i?2 K2�M �/DmbiK2Mi `2H�iBp2 iQi?2 +QM}/2M+2 Q7 i?2 KQ/B}2/ ?B//2M `272`2M+2 7Q` i?2 b�K2 T`Q;`�KK2 Bi2KX

Ai +�M #2 b22M i?�i BM KQbi +�b2b i?2 `2bmHib �`2 Q7 bBKBH�` +QMbBbi2M+v 7Q` i?2 i2bi biBKmHB �b7Q` i?2 KQ/B}2/ ?B//2M `272`2M+2- bm;;2biBM; i?�i i?2 bm#D2+ib r2`2 �#H2 iQ T2`7Q`K i?2 i�bF �b�++m`�i2Hv �b i?2 K2i?Q/QHQ;v Q` i?2B` �#BHBiv �HHQr2/X S2`?�Tb mMbm`T`BbBM;Hv- 2t+2TiBQMb iQ i?BbBM+Hm/2 i?2 ?2�/T?QM2 `2T`Q/m+iBQM K2i?Q/ �M/ i?2 HQr [m�HBiv KQMQ HQm/bT2�F2`X *QKT�`BM;i?2 HQm/M2bb Q7 ?2�/T?QM2b �M/ HQm/bT2�F2`b Bb � /B{+mHi i�bF �b i?2 HBbi2MBM; 2tT2`B2M+2b �`2 p2`v/Bz2`2Mi- �M/ i?2`2 Bb � /2H�v BM +QKT�`BbQMb r?BHbi i?2 ?2�/T?QM2b �`2 Tmi QM �M/ i�F2M QzX �bMQi2/ �#Qp2- Bi r�b MQi TQbbB#H2 iQ K�i+? i?2 HQm/M2bb rBi? i?2 HQr [m�HBiv KQMQ HQm/bT2�F2`BM dNW Q7 +�b2bc i?2 �++2Ti�#BHBiv Dm/;2K2Mi i?�i T�`iB+BT�Mib r2`2 �bF2/ iQ K�F2 ?�b � ;`2�i2`+QKTQM2Mi Q7 T2`bQM�H T`272`2M+2 �M/ Bb i?2`27Q`2 HBF2Hv iQ T`Q/m+2 H2bb �;`22K2Mi i?�M �M �#bQHmi2Dm/;2K2Mi bm+? �b HQm/M2bb (7`�M+QK#2n2i�HnkyRk)X

jXe amKK�`vh?2 2tT2`BK2Mi /2b+`B#2/ �#Qp2 r�b /2bB;M2/ iQ T2`+2Tim�HHv HQm/M2bb K�i+? � b2i Q7 T`Q;`�KK2K�i2`B�H Bi2Kb `2TH�v2/ Qp2` /Bz2`2Mi bT�iB�H �m/BQ `2T`Q/m+iBQM bvbi2KbX h?Bb r�b +QMbB/2`2/ iQ#2 � TQi2MiB�HHv /B{+mHi i�bF 7Q` i?2 HBbi2M2`b- �b Bi Bb MQi bi`�B;?i7Q`r�`/ iQ /2i2`KBM2 i?2 HQm/M2bbQ7 i2KTQ`�HHv@p�`vBM; bQmM/b i?�i �HbQ p�`v BM iBK#`�H �M/ bT�iB�H +?�`�+i2`BbiB+bX >Qr2p2`- i?2`2bmHib T`2b2Mi2/ �#Qp2 bm;;2bi i?�i T�`iB+BT�Mib r2`2 �#H2 iQ T2`7Q`K i?2 i�bF �TT`QtBK�i2Hv �br2HH 7Q` KQbi Q7 i?2 bT�iB�H 7Q`K�ib �b i?2v +QmH/ 7Q` � ?B//2M `272`2M+2 i?�i QMHv /Bz2`2/ 7`QK i?2`272`2M+2 BM bi�`iBM; H2p2HX lMbm`T`BbBM;Hv- i?2`2 r�b H2bb +2`i�BMiv 7Q` i?2 ?2�/T?QM2b �M/ i?2 HQr[m�HBiv KQMQ HQm/bT2�F2`X h?2 HQm/M2bb@K�i+?2/ biBKmHB r2`2 BM7Q`K�HHv �m/BiBQM2/ 7QHHQrBM; i?2HQm/M2bb 2[m�HBb�iBQM- +QM}`KBM; i?2 2{+�+v Q7 i?2 T`Q+2/m`2X

9 GQm/M2bb KQ/2H i2biBM;6QHHQrBM; i?2 T2`+2Tim�H 2tT2`BK2Mi /2b+`B#2/ �#Qp2- i?2 `2bmHib r2`2 mb2/ iQ i2bi � MmK#2` Q7 HQm/@M2bb KQ/2Hb p�`vBM; BM +QKTH2tBiv 7`QK Tm`2Hv T?vbB+�H K2�bm`2K2Mib iQ +QKTH2t Tbv+?Q�+QmbiB+�HHv@

d

HP LQ Mo St 5 9 22 Cu−10

−5

0

5

10

15

Reproduction method

Adju

stm

en

t (d

B)

U�V "`�bb

HP LQ Mo St 5 9 22 Cu−10

−5

0

5

10

15

Reproduction method

Adju

stm

en

t (d

B)

U#V SQT

HP LQ Mo St 5 9 22 Cu−10

−5

0

5

10

15

Reproduction method

Adju

stm

ent

(dB

)

U+V "B; #�M/

HP LQ Mo St 5 9 22 Cu−10

−5

0

5

10

15

Reproduction method

Adju

stm

ent

(dB

)

U/V C�xx

HP LQ Mo St 5 9 22 Cu−5

0

5

10

15

20

Reproduction method

Adju

stm

ent (d

B)

U2V aTQ`i

HP LQ Mo St 5 9 22 Cu−5

0

5

10

15

20

25

30

Reproduction method

Adju

stm

ent (d

B)

U7V 1tT2`BKX

HP LQ Mo St 5 9 22 Cu−10

−5

0

5

10

15

20

25

Reproduction method

Adju

stm

ent (d

B)

Experiment data

MHR CI size

U;V 6BHK

6B;m`2 9, J2�M �/DmbiK2Mi 7Q` 2�+? biBKmHmbX 1``Q` #�`b b?Qr N8W +QM}/2M+2 BMi2`p�Hb +�H+mH�i2/mbBM; i?2 t@/Bbi`B#miBQMX GB;?i 2``Q` #�`b b?Qr i?2 bBx2 Q7 i?2 +QM}/2M+2 BMi2`p�H 7Q` i?2 KQ/B}2/?B//2M `272`2M+2 UJ>_V- i`�MbTQb2/ iQ #2 +2Mi2`2/ �i i?2 K2�M �/DmbiK2Mi 7Q` 2�+? biBKmHmbX

3

KQiBp�i2/ KQ/2HbX h?2 7QHHQrBM; KQ/2Hb r2`2 i2bi2/X

Ç J2�M U�+`Qbb �HH +?�MM2HbV `QQi@K2�M@b[m�`2 U_JaV H2p2H

Ç _Ja H2p2H Q7 KQMQ bmK Q7 #BM�m`�H `2+Q`/BM;b

Ç /" G�eq(20s) K2�bm`2/ rBi? �M LhA �GR �+QmbiBHvb2`

Ç Ahl@_ "aXRddy@j- BM+Hm/BM; T`QTQb2/ �//BiBQM�H r2B;?ib 7Q` �`#Bi`�`v HQm/bT2�F2` TQbBiBQMb(e)

Ç Ahl@_ "aXRddy@j KQ/B}2/ 7Q` #BM�m`�H BMTmi #v #vT�bbBM; i?2 ?2�/@b?�/QrBM; }Hi2` U�b mb2/#v SBF2 �M/ J2H+?BQ` (RR)V

Ç :H�b#2`; �M/ JQQ`2Ƕb KQ/2H Q7 i?2 HQm/M2bb Q7 iBK2@p�`vBM; bQmM/b (Rk)- K�tBKmK HQM;@i2`KHQm/M2bb UGhGV H2p2H

Ç wrB+F2` �M/ 6�biHǶb KQ/2H Q7 i?2 HQm/M2bb Q7 iBK2@p�`vBM; bQmM/b (Rj)- K�tBKmK BMbi�Mi�M@2Qmb HQm/M2bb H2p2H

h?2 :1L1aAa HQm/M2bb iQQH#Qt (R9) BKTH2K2Mi�iBQMb Q7 i?2 :H�b#2`; �M/ JQQ`2 �M/ i?2wrB+F2` �M/ 6�biH KQ/2Hb r2`2 mb2/X 6Q` BMTmi iQ i?2b2 KQ/2Hb U�M/ i?2 #BM�m`�H _Ja K2i`B+V-#BM�m`�H `2+Q`/BM;b r2`2 K�/2 rBi? � *Q`i2t JER /mKKv ?2�/- +�HB#`�i2/ bQ i?�i Ryy /" aSG4 y /"6aX h?2 +�HB#`�iBQM r�b bm#b2[m2MiHv �/Dmbi2/ BM bQ7ir�`2 bQ i?�i N9 /" aSG 4 y /"6a-�b `2[mB`2/ #v i?2 iQQH#QtX

9XR JQ/2H T2`7Q`K�M+2�M �M�HvbBb Q7 i?2 T2`7Q`K�M+2 Q7 i?2 HQm/M2bb KQ/2Hb Bb T`2b2Mi2/ BM i?2 7QHHQrBM; b2+iBQMbX h?2?2�/T?QM2- HQr [m�HBiv KQMQ- �M/ }p2@+?�MM2H `272`2M+2 T`Q;`�KK2 Bi2Kb r2`2 2t+Hm/2/ 7`QK i?2�M�HvbBb T`2b2Mi2/ #2HQrX

9XRXR Pp2`�HH T2`7Q`K�M+2

6B;m`2 8 b?Qrb i?2 K2�M /2pB�iBQM 7`QK i?2 `272`2M+2 UQp2` �HH T`Q;`�KK2 Bi2KbV- rBi? N8W +QM}/@2M+2 BMi2`p�Hb +�H+mH�i2/ mbBM; i?2 MQ`K�H /Bbi`B#miBQM- 7Q` 2�+? HQm/M2bb KQ/2HX � TQbBiBp2 p�Hm2BM/B+�i2b i?�i i?2 KQ/2H T`2/B+i2/ i?�i i?2 `2T`Q/m+iBQM r�b HQm/2` i?�M i?2 `272`2M+2X Ai +�M #2b22M i?�i i?2 K2�M /2pB�iBQM Bb MQi ;`2�i2` i?�M ±1 /" 7Q` �Mv Q7 i?2 KQ/2HbX h?2 KQ/2Hb �`2;2M2`�HHv +QMbBbi2Mi- 2t?B#BiBM; N8W +QM}/2M+2 BMi2`p�Hb Q7 �TT`QtBK�i2Hv ±0.5 /"- rBi? i?2 2t@+2TiBQM Q7 i?2 K2�M _Ja KQ/2H UrBi? � +QM}/2M+2 BMi2`p�H Q7 �TT`QtBK�i2Hv ±2 /"VX h?2 #BM�m`�HBKTH2K2Mi�iBQM Q7 "aXRddy@j ?�/ i?2 +HQb2bi K2�M iQ x2`Q- bm;;2biBM; i?2 #2bi Qp2`�HH T2`7Q`K�M+2X>Qr2p2`- i?2 +?�MM2H@#�b2/ "aXRddy@j- JQQ`2- �M/ wrB+F2` KQ/2Hb ?�/ HQr2` p�`B�M+2b �M/ K2�MbMQi bB;MB}+�MiHv /Bz2`2Mi 7`QK x2`QX

6B;m`2 8 �HbQ BM+Hm/2b TB2 +?�`ib b?QrBM; i?2 T2`+2Mi�;2 Q7 KQ/2H b+Q`2b i?�i HB2 rBi?BM i?2+QM}/2M+2 BMi2`p�Hb Q7 i?2 T2`+2Tim�H i2bi `2bmHib- BX2X- +�b2b r?2`2 i?2 KQ/2H +QmH/ #2 b�B/ iQT2`7Q`K �b r2HH �b i?2 T�M2H Q7 HBbi2M2`bX h?2 JQQ`2 KQ/2H T2`7Q`K2/ #2bi BM i?Bb `2;�`/- rBi?89XjW +Q``2+i T`2/B+iBQMbX h?2 "aXRddy@j �M/ #BM�m`�H _Ja KQ/2Hb �HbQ T2`7Q`K r2HH- rBi? 9kXNW�M/ 98XdW +Q``2+i T`2/B+iBQMb `2bT2+iBp2HvX h?2 `2�bQM�#Hv HQr T2`+2Mi�;2b BM/B+�i2 i?�i r?BHbiQM i?2 r?QH2 i?2 KQ/2Hb �`2 `2�bQM�#Hv �++m`�i2 UBX2X i?2v ?�p2 � HQr K2�M 2``Q`V- i?2v �`2 biBHHbQK2 r�v 7`QK K�i+?BM; i?2 T2`7Q`K�M+2 Q7 � HBbi2MBM; T�M2HX

Pp2`�HH bi�iBbiB+b 7Q` i?2 T2`7Q`K�M+2 Q7 2�+? KQ/2H �`2 ;Bp2M BM h�#H2 kX _QQi@K2�M@b[m�`22``Q` U_Ja1V Bb � K2�bm`2 Q7 ;QQ/M2bb@Q7@}i #2ir22M i?2 bm#D2+iBp2 /�i� �M/ KQ/2H T`2/B+iBQMbX1TbBHQM@BMb2MbBiBp2 _Ja1 U_Ja1 V �++QmMib 7Q` bm#D2+iBp2 mM+2`i�BMiv #v QMHv BM+Hm/BM; 2``Q`bi?�i 7�HH QmibB/2 i?2 N8W +QM}/2M+2 BMi2`p�Hb �`QmM/ i?2 bm#D2+iBp2 /�i�X h?2 +Q``2H�iBQM +Q2{+B2MiUS2�`bQMǶb rV /2b+`B#2b i?2 HBM2�`Biv Q7 i?2 `2H�iBQMb?BT #2ir22M i?2 bm#D2+iBp2 `2bmHib �M/ KQ/2H

N

−2

−1

0

1

2

3

4

Model

Diff

ere

nce

fro

m r

efe

rence

leve

l (dB

)

Mean RMSBin. RMS

LAeq

BS1770−3

BS1770−3 (bin.)Moore

Zwicker

14% 46% 23% 43% 31% 54% 37%

6B;m`2 8, J2�M /Bz2`2M+2 #2ir22M KQ/2H b+Q`2b 7Q` i?2 `272`2M+2 �M/ Qi?2` `2T`Q/m+iBQM K2i?Q/bXSB2 +?�`ib U/�`F b2;K2MibV b?Qr i?2 T2`+2Mi�;2 Q7 KQ/2H b+Q`2b i?�i 72HH rBi?BM i?2 +QM}/2M+2BMi2`p�Hb Q7 i?2 bm#D2+iBp2 /�i�X

b+Q`2bX h?2 QmiHB2` `�iBQ UP_V Bb i?2 `�iBQ Q7 KQ/2H b+Q`2b i?�i HB2 QmibB/2 i?2 N8W +QM}/2M+2BMi2`p�Hb �`QmM/ i?2 bm#D2+iBp2 /�i� iQ i?2 iQi�H MmK#2` Q7 b+Q`2bX JQ`2 /2i�BH QM i?2 +�H+mH�iBQMQ7 i?2b2 bi�iBbiB+b Bb ;Bp2M #v 6`�M+QK#2 (R8)X h?2 JQQ`2 KQ/2H 2t?B#Bib i?2 #2bi T2`7Q`K�M+2QM �HH K2i`B+bX h?2 wrB+F2` �M/ "aXRddy@j KQ/2Hb 2t?B#Bi p2`v bBKBH�` bi�iBbiB+b- rBi? _Ja1 mM/2` yXd /"X h?2 "aXRddy@j #BM�m`�H BKTH2K2Mi�iBQM �M/ #BM�m`�H _Ja KQ/2Hb �HbQ ?�p2 bBKBH�`bi�iBbiB+bX h?2 G�eq KQ/2H Bb bHB;?iHv rQ`b2- r?BHbi i?2 K2�M _Ja KQ/2H T2`7Q`Kb bB;MB}+�MiHvH2bb r2HH BM 2p2`v `2bT2+ic i?2 +Q``2H�iBQM Q7 r = 0.02 bm;;2bib i?�i i?2`2 Bb MQ HBM2�` `2H�iBQMb?BT#2ir22M i?2 KQ/2H T`2/B+iBQMb �M/ i?2 T2`+2Tim�H b+Q`2bX

JQ/2H _Ja1U/"V

_Ja1 U/"V

r P_

JQQ`2 yX3y yXjN yXNe yX9ewrB+F2` RXR9 yXee yXNR yXej"aXRddy@j RXRk yXeN yXNR yX8d"aXRddy@jU#BMXV

RX9k yXNR yXNk yXeN

"BMX _Ja RXj3 yXNj yXNj yX89G�eq RXd8 RXk9 yX38 yXddJ2�M _Ja eX3j eXjy yXyk yX3e

h�#H2 k, GQm/M2bb KQ/2H bi�iBbiB+b bQ`i2/ #v _Ja1 Ub22 #Q/v i2ti 7Q` � /2b+`BTiBQM Q7 2�+?bi�iBbiB+V

h?2 JQQ`2 KQ/2H iQQF i?2 HQM;2bi iQ `mM 7Q` i?2 ky b2+QM/ 2t+2`Tib U� K2�M `mM iBK2 Q78d9 b2+QM/b T2` 2t+2`TiV- 7QHHQr2/ #v i?2 wrB+F2` KQ/2H UK2�M `mM iBK2 e b2+QM/b T2` 2t+2`TiVX�HH Qi?2` KQ/2Hb iQQF H2bb i?�M R b2+QM/ iQ `mM UrBi? i?2 2t+2TiBQM Q7 i?2 G�eq KQ/2H- r?B+? BMi?Bb +�b2 r�b K2�bm`2/ BM `2�H iBK2VX

Ry

9XRXk S2`7Q`K�M+2 #v `2T`Q/m+iBQM K2i?Q/

h?2 `2bmHib �`2 7m`i?2` #`QF2M /QrM BM 6B;m`2 e- r?B+? b?Qrb i?2 K2�M /2pB�iBQM UrBi? N8W +QM@}/2M+2 BMi2`p�Hb +�H+mH�i2/ mbBM; i?2 t@/Bbi`B#miBQMV #v HQm/M2bb KQ/2H �M/ `2T`Q/m+iBQM K2i?Q/Xh?2 K2�M _Ja KQ/2H 2t?B#Bib p2`v TQQ` T2`7Q`K�M+2 QM i?2 K2i?Q/b rBi? 2ti`2K2 MmK#2`bQ7 HQm/bT2�F2`b U2X;X KQMQ Q` kk@+?�MM2HVX h?2 Qi?2` KQ/2Hb �`2 `2�bQM�#Hv +QMbBbi2Mic QMHv i?2G�eq �M/ "aXRddy@j KQ/2Hb ?�p2 p�Hm2b bB;MB}+�MiHv /Bz2`2Mi 7`QK x2`Q Ui?2 N@+?�MM2H `2T`Q/m+@iBQM 7Q` "aXRddy@j �M/ +m#QB/ `2T`Q/m+iBQM 7Q` #Qi? KQ/2HbVX h?2 JQQ`2 KQ/2H Bb KQbi +QMbBbi2Mi�+`Qbb `2T`Q/m+iBQM K2i?Q/b U#mi i?Bb +QK2b �i i?2 2tT2Mb2 Q7 Km+? HQM;2` +QKTmi�iBQM iBK2- �bMQi2/ �#Qp2VX h?2`2 Bb MQ Q#pBQmb `2H�iBQMb?BT #2ir22M i?2 `2T`Q/m+iBQM K2i?Q/ �M/ i?2 /B`2+iBQMQ7 i?2 2``Q` BM T`2/B+iBQMc ?Qr2p2`- T2`7Q`K�M+2 Bb ;2M2`�HHv rQ`b2 7Q` bvbi2Kb rBi? 2ti`2K2b Q7HQm/bT2�F2` MmK#2`bX

−10

−5

0

5

10

15

Model

Diff

ere

nce

fro

m r

efe

rence

leve

l (dB

)

Mean RMSBin. RMS

LAeq

BS1770−3

BS1770−3 (bin.)Moore

Zwicker

MonoStereo9Chan22ChanAmbiCube

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