ISO 3741

Acoustics; Determination of sound power levels of noise sources; Precision methods for broad-band sources in reverberation rooms

1975-07-00

Hết hiệu lực

DIN 45635-2 (1977-12), IDT * DIN 45635-2 (1987-10), MOD * NBN S 01-201 (1979), IDT * BS 4196-1 (1981-01-30), IDT * NF S31-022 (1973-09-01), IDT * OENORM S 5031 (1977-03-01), MOD * SS-ISO 3741 (1986-09-17), MOD * UNE 74031 (1987-04-15), IDT * TS 2710 (1977-04-28), IDT * DS/ISO 3741 (1975), IDT * NEN-ISO 3741 (1983), IDT * NS 4817 (1982), MOD * SFS 4841 ISO 3741 (1982), IDT * SABS 0192:1984 (1984-03-08), IDT

ISO 3741 (1988-12)

ISO 3741 (2010-10) * ISO 3741 (1999-08) * ISO 3741 (1988-12) * ISO 3741 (1975-07)

Acoustics * Broadband * Closed test rooms * Definitions * Frequencies * Mathematical calculations * Measurement * Measuring instruments * Noise (environmental) * Noise measurements * Precision * Reverberation * Reverberation rooms * Reverberation time * Rooms * Sound intensity * Sound sources * Specification (approval) * Testing * Testing conditions * Tests * Time * Tolerances (measurement) * Frequency ranges * Sound pressure level * Direct * Noise * Bushings * Sound pressure * Audiofrequencies * Sound spectra * Average * Sound levels * Machines * Measurement of airborne noise * Interpretations * Extraneous noise * Sound * Sound level * Methods * Measurement conditions * Sound power * External noise * Noise emissions * Engines

17.140.01. Các phép đo âm học và độ ồn nói chung

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