KS A ISO 22234-2011 Cinematography－Relative and absolute sound pressure levels for motion-picture multi-channel sound systems－Measurement methods and levels《电影摄影 多路声道系统的相对和绝对声压级 测定.pdf

1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS A ISO 22234 , KS A ISO 22234:2011 2011 12 27 http:/www.kats.go.krKS A ISO 22234:2011 : ( ) ( ) ( ) : (http:/www.standard.go.kr) ： ：2003 12 15 ：2011 12 27 2011-0633 ： ： ( 02-509-7278) (http:/www.kats.go.kr). 10 5 , . KS A ISO 22234:2011 i . ii 1 1 2 1 3 .1

2、 4 .3 4.1 .3 4.2 4 4.3 4 4.4 4 4.5 .4 4.6 4 4.7 , 4 4.8 , 4 5 .5 A( ) .6 A.1 .6 A.2 6 A.3 6 A.4 .7 A.5 7 A.6 7 8 KS A ISO 22234:2011 ii ISO 22234, Cinematography Relative and absolute sound pressure levels for motion-picture multi-channel sound systems Measurement methods and levels . KS A ISO 22234

3、:2011 , Cinematography Relative and absolute sound pressure levels for motion-picture multi-channel sound systems Measurement methods and levels 1 . KS A ISO 2969 , . 2 . . ( ) . KS A ISO 2969, B KS C IEC 61672 1, ( ) 1： IEC 60268 17： 1990, Sound system equipment Part 17： Standard volume indicators

4、3 . 3.1 . 20 N/m . 3.2 (average responding meter) IEC 60268 17 . 3.3 (bass extension) LFE , (sub-woofer) (A.3 ). KS A ISO 22234:2011 2 3.4 B 1 B (fader) (A.7 ). 3.5 B KS A ISO 2969 , 1/3 . 3.6 LFE 80 Hz 125 Hz . 3.7 , (octave) . 3.8 ( ) 22 Hz 22 kHz (fader) r.m.s.(root mean square) (A.5 A.7 ). 3.9 5

5、0 % (modulation) 20 dB . 3.10 . 3.11 25 Hz 20 kHz 1/3 0.5 dB . 3.12 (wide-band sound level meter) KS C IEC 61672 1 KS A ISO 22234:2011 3 1 2 4 4.1 , KS A ISO 2969 KS A ISO 22234:2011 4 . 4.2 C . 1/3 . 4.3 . , . 4.4 , . 2 , . 2 S . , , . 30 . 4.5 3.11 0.5 dB . 4.6 , 3 dB . . 4.7 , , (in-band gain) 10

6、 dB ( 3 A.1 ). 4.8 , - . ( 4 A.2 ). , 3 dB . KS A ISO 22234:2011 5 3 4 5 3.9 , 85 dB(C ) (A.6 ). KS A ISO 22234:2011 6 A ( ) A.1 . . 120 Hz 250 Hz , A.1 . , C . A.1 A.2 . . A.3 ( 50 Hz ) . (streaking noise) . . KS A ISO 22234:2011 7 . . 4.8 . A.4 . . . . B . A.5 B . 0 10 , 7 . 70 % , . 0 . , 5. . A.

7、6 3.9 5. . 3.9 60 % 1.6 dB 50 % 5. 85 dB 1.6 dB 83.4 dB . KS A ISO 22234:2011 8 1 SMPTE 202M 1998, Motion-Pictures B-Chain Electroacoustic Response Dubbing Theaters, Review Rooms, and Indoor Theaters 2 SMPTE RP 200 1999, Relative and Absolute Sound Pressure Levels for Motion Picture Multichannel Sou

8、nd Systems 3 ANSI S1.13 1995, Measurement of Sound Pressure Levels in Air , 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS A ISO 22234:2011KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Cinematography Relative and absolute sound pressure levels for motion-picture multi-channel sound systems Measurement methods and levels ICS 37.060.99