ANSI/ASA S3.4-2007 稳定音效响度计算规程

标准号：ANSI/ASA S3.4-2007
中文标准名称：稳定音效响度计算规程
英文标准名称：Procedure for the Computation of Loudness of Steady Sounds
标准类型：Z32
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：Z32
国际标准分类号：17.140.01
适用范围：Specifies a procedure for calculating the loudness of steady sounds as perceived by a typical group of listeners with normal hearing, based on the spectra of the sounds. The possible sounds include simple and complex tones (both harmonic and inharmonic) and bands of noise. The spectra can be specified exactly, in terms of the frequencies and levels of individual spectral components, or approximately, in terms of the levels in 1/3 octave bands covering center frequencies from 50 to 16000 Hz. Sounds can be presented in free field with frontal incidence, in a diffuse field, or via headphones.