Акустика. Визначення рівнів звукової потужності джерел шуму за звуковим тиском. Орієнтувальний метод з використанням обгинальної вимірювальної поверхні над звуковідбивальною площиною

1 2 4 1 2 З? 4 5 6 7 8 і? A - 9 10 —? —? —? —? —? —? —?

ACOUSTICS

Determination of sound power lewels of noisesources using sound pressureSurvey method using an enveloping measurementsurface over a reflecting plane
0.1 0.2 0.3 -■? Or 4 5 21

1 1.1 1.2 1.3 1.4

2 ISO 354:1985 Acoustics — Measurement of sound absorption in a reverberation room
ISO 3744:1994 Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane
ISO 3745:1977 Acoustics — Determination of sound power levels of noise sources — Precision methods for anechoic and semi-anechoic rooms
ISO 3747:1987 Acoustics — Determination of sound power levels of noise sources — Survey method using a reference sound source
ISO 4871 :- ISO 6926:1990 Acoustics — Determination of sound power levels of noise sources — Requirements for the performance and calibration of reference sound sources
ISO 7574-1:1985 Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 1: General considerations and definitions
ISO 7574-4:1985 Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 4: Methods for stated values for batches of machines
ISO 60651:1979 Sound level meters, and Amendment 1:1993
IEC 60804:1985 Integrating-averaging sound level meters, and Amendment 1:1989 and Amendment 2:1993
IEC 60942:1988 Sound calibrators.
ISO 354:1985 ISO 3744:1994 ISO 3745:1977 ISO 3747:1987 ISO 4871 :- 1) ISO 6926:1990 ISO 7574-1:1985 ISO 7574-4:1985 ISO 60651:1979 IEC 60942:1988 3.1 3.2 3.2.1 <
/- V 3.2.2

3.2.3 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 4 4.1 4.2 4.3 A - 5 5.1 5.2 5.3 6 6.1 6.2 6.3 6.3.1 6.3.2 6.4 6.5 —? —? —? —? —? —? 7 7.1 — — 7.2 ' 7.2.1

d 0 =V /2 + / 2 + / 3
7.2.2 а?) Ь?) с?) 7.3 7.3.1 S = 4 (ab + b = 0,5 / 2 + d;
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( 1 N ■?■? ^ /=1 7
£?" LpA, — A - N — 8.2 K 1A =-1Olg(l-1(T o ' 1ALA ), 8.3 8.4 8.5 A - S

M/va - Lpf* +10 S — S o = 1 8.6 а?) Ь?) с?) d) 9 9.1 —? —? —? —? —? —? 9.2 а?) Ь?) с?) d) 9.3 а?) —? —? Ь?) 9.4 а?) Ь?) с?) 9.5 а?) A -

Ь?) с?) d) е?) f) A -

h) 9.6 а?) A - Ь?) с?) d) е?) f) 10 а?) Ь?) ^2 L'w^r — K 2A =10lg 1 + 4- , X. J
S —

S v — V

А?.3 .3 S* 1 - ( В?.1 В?.2 В?.З?

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S = 2(2

1 ISO 3740:1980 Acoustics — Determination of sound power levels of noise sources — Guidelines for the use of basic standards and for the preparation of noise test codes
2 ISO 3741:1988 Acoustics — Determination of sound power levels of noise sources — Precision methods for broad-band sources in reverberation rooms
3 ISO 3742:1988 Acoustics — Determination of sound power levels of noise sources — Precision methods for discrete-frequency and narrow-band sources in reverberation rooms
4 ISO 3743-1:1994 Acoustics — Determination of sound power levels of noise sources — Engineering methods for small, movable sources in reverberant fields — Part 1: Comparison method for hard-walled test rooms
5 ISO 3743-2:1994 Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering methods for small, movable sources in reverberant fields — Part 2: Methods for special reverberation test rooms
6 ISO 7574-2:1985 Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 2: Methods for stated values for individual machines
7 ISO 7574-3:1985 Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 3: Simple (transition) method for stated values for batches of machines
8 ISO 9296:1988 Acoustics — Declared noise emission values of computer and business equipment
9 ISO 9614-1:1993 Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points
10 ISO 9614-2:- 11 ISO 12001 :- 2) Acoustics — Noise emitted by machinery and equipment — Rules for the drafting and presentation of a noise test code
12 IEC 61260:- 2) Electroacoustics — Octave-band and fractional-octave-band filters.