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Acoustic Effects Produced By a Reflecting Plane
Acoustic Effects Produced By a Reflecting Plane
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Acoustic Effects Produced by a Reflecting Plane
The purposes of this AIR are to provide technical background associated with the problem of correcting measured noise spectra to the free field
Acoustic Effects Produced by a Reflecting Plane
Reflection-plane tests of spoilers on an advanced technology wing with a large Fowler flap
ADOPTED_FROM:ISO 3744:1981
Acoustics — Determination of sound power levels of noise sources — Engineering methods for free-field conditions over a reflecting plane
Acoustics. Determination of sound power levels of noise sources. Engineering methods for free-field conditions over a reflecting plane
La presente norma è la versione ufficiale della norma europea EN ISO 3744 (edizione luglio 2009). La norma specifica un metodo per misurare i
Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering method in an essentially free field over a reflecting plane
Acoustics - Measurement of airborne noise emittedby rotating electrical machinery - Engineering method for free-field conditions over a reflecting plane
Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering methods for an essentially free field over a reflecting plane
Method of measurement of airborne noise emitted by rotating electrical machinery: Part 1 Engineering method for free-field conditions over a reflecting plane
1.1 一般規(guī)定 本文件規(guī)定了從聲壓級測定聲源聲功率級的方法，聲壓級是在包圍聲源（機(jī)器或設(shè)備）的表面上測量的，聲源位于近似于一個(gè)或多個(gè)反射平面附近的聲自由場環(huán)境中。通過這種方法計(jì)算聲源在頻帶或A計(jì)權(quán)下產(chǎn)生的聲功率級。 注：不同形狀的測量面可能會對特定聲源的聲功率級產(chǎn)生不同的估計(jì)值，這些差異應(yīng)通過
Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO/DIS 3744:2023); German and English version prEN ISO 3744:2023 / Note: Date of issue 2...
Sets out engineering methods for measuring the sound pressure levels on a measurement surface enveloping the source and for calculating the sound
Acoustics - Determination of sound power levels of noise sources, Part 5: Engineering methods for free-field conditions over a reflecting plane
Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering method in an essentially free field over a reflecting plane
General This International Standard specifies a method for measuring the sound pressure levels on a measurement surface enveloping the source in order
Acoustics - Determination of sound power levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane
