KS C IEC 61183-2001 Electroacoustics-Random incidence and diffuse-field calibration of sound level meters《电声学 声级计的无规定射声场及扩散声场的校正》.pdf
《KS C IEC 61183-2001 Electroacoustics-Random incidence and diffuse-field calibration of sound level meters《电声学 声级计的无规定射声场及扩散声场的校正》.pdf》由会员分享,可在线阅读,更多相关《KS C IEC 61183-2001 Electroacoustics-Random incidence and diffuse-field calibration of sound level meters《电声学 声级计的无规定射声场及扩散声场的校正》.pdf(21页珍藏版)》请在麦多课文档分享上搜索。
1、 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS 2001 12 8 KS C IEC 61183 KS C IEC 61183: 2001 (2006 )(IEC 61183: 1994, IDT) KS C IEC 61183:2001(IEC 61183:1994) 1 1. .1 2. .1 3. .2 3.1 2 3.2 (reference direction) 2 3.3 (random incidence sound field) .2 3.4 (diffuse sound field) 2 3.5 (random-incidence sen
2、sitivity level) .2 3.6 (diffuse-field sensitivity level) 2 3.7 (free-field sensitivity level) .2 3.8 (pressure sensitivity level) .2 4. 2 5. 4 A() .6 A.1 .6 A.2 8 A.3 G F 9 A.4 .9 A.5 G RI 10 A.6 G RI 10 B() .11 B.1 11 B.2 4. A G D 11 B.3 G F, ref ref , G D 11 B.4 G P, ref DP , , G D .12 B.5 B.1 12
3、14 ICS 17.140.50 KS C IEC 61183: 2001(2006 )(IEC 61183: 1994, IDT)Electroacoustics Random incidence and diffuse-field calibration of sound level meters 1994 1 IEC 61183, Electroacoustics Random incidence and diffusefield calibration of sound level meters . “ ” . 1. 1.1 , . 1.2 . . 1.3 . . , . 1.4 .
4、2. . ( ) . KS A 3006 IEC 60050(801) International Electrotechnical Vocabulary Chapter 801: Acoustics and electroacoustics . KS C 1502 IEC 60651 Sound level meters . KS C 1505 IEC 60804 Integrating Averaging sound level meters . IEC 61094 1 Measurement microphones Part 1: Specifications for laborator
5、y standard microphones IEC 61260 Electroacoustics Octave band and fractional octave band filters ISO 266 Acoustics Preferred frequencies for measurements , 1997 Acoustics preferred frequencies . ISO 3741 Acoustics Determination of sound power levels of noise sources Precision methods for broad band
6、sources in reverberation rooms(KS ) C IEC 61183:2001 2 ISO 3745 Acoustics Determination of sound power levels of noise sources Precision methods for anechoic and semi anechoic rooms(KS ) 3. 3.1 KS A 3006(IEC 60050 801) . 3.2 (reference direction) 3.3 (random incidence sound field) ( ) , , 3.4 (diffu
7、se sound field) ( ) , , 3.5 (random-incidence sensitivity level) ( ) , , , . (dB) 1. 3.5 3.8 , ( , , 20 ) . 2. , , . 3.6 (diffusefield sensitivity level) ( ) , , . (dB) 3.7 (freefield sensitivity level) ( ) , , . (dB) 3.8 (pressure sensitivity level) ( ) , . (dB) 4. 4.1 ( ) GRI . GRI GF 10 log (dB).
8、(1) : , (全指向, omnidirectional) . GF: , Lrd L0(dB) C IEC 61183:2001 3 Lrd: (reference direction) (dB) L0: (dB) 4.2 GF Lrd L0 , . 4.3 . X . rr ( 1 ). 4.4 . =drLLs)(1.0rd104r(2) L( rr): rr (dB) Lrd: (dB) d: rr (sr) . 1 4.5 2 X X . . ddLLsin104),(1.0020rd=.(3) 4.6 . (近傍 ) . rr C IEC 61183:2001 4 4.7 L(,
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