声学 计算响度的方法 第 3 部分：Moore-Glasberg-Schlittenlacher 方法

[中文适用范围]： 本文件规定了一种估算在特定听音条件下正常成年听众所感知的稳态和时变声音的响度和响度级的方法。可以使用单个麦克风、头部和躯干模拟器录制声音，或者，对于通过耳机呈现的声音，可以使用传送到耳机的电信号。该方法基于 Moore-Glasberg-Schlittenlacher 算法。注 1：希望研究计算方法细节的用户可以查看或实现源代码，该源代码完全具有参考性，并随标准一起提供以方便用户。该方法可应用于任何声音，包括音调、宽带噪声、具有尖锐线谱分量的复杂声音、音乐声、语音和撞击声（如枪声和音爆）。计算超过 5 秒的时变信号整个周期内的总响度的单个值超出了本文件的范围。注 2：结果表明，对于稳定音调，该方法与 ISO 226:2003[18] 中定义的等响度级轮廓线和 ISO 226:2003 中定义的听力参考阈值非常吻合。 [外文原描述]： This document specifies a method for estimating the loudness and loudness level of both stationary and time-varying sounds as perceived by otologically normal adult listeners under specific listening conditions. The sounds may be recorded using a single microphone, using a head and torso simulator, or, for sounds presented via earphones, the electrical signal delivered to the earphones may be used. The method is based on the Moore-Glasberg-Schlittenlacher algorithm. NOTE 1 Users who wish to study the details of the calculation method can review or implement the source code which is entirely informative and provided with the standard for the convenience of the user. This method can be applied to any sounds, including tones, broadband noises, complex sounds with sharp line spectral components, musical sounds, speech, and impact sounds such as gunshots and sonic booms. Calculation of a single value for the overall loudness over the entire period of a time-varying signal lasting more than 5 s is outside the scope of this document. NOTE 2 It has been shown that, for steady tones, this method provides a good match to the contours of equal loudness level as defined in ISO 226 : 2003 [ 18 ] and the reference threshold of hearing as defined in ISO 389 - 7 : 2019 [ 19 ] .