GB/T 4963-2007 in English

VALID

Acoustics—Normal equal-loudness-level contours

Issued on:1985-02-28
Implemented on:2008-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $360.00
$350.00

Standard No:	GB/T 4963-2007
Document status:	VALID
Title in English:	Acoustics—Normal equal-loudness-level contours
Title in Chinese:	声学标准等响度级曲线
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	1985-02-28
Implemented on:	2008-05-01
Superseding:	GB 4963-1985 Normal equal-loudness contours for pure tones under free field listening conditions
ICS Classification:	13.140-Noise with respect to human beings
Chinese Classification:	A59-Acoustic Measurement
Professional Classification:	GB-National Standard
Related Keywords:	normal equal-loudness-level contours scopethis standard sound pressure level normal ear subjects sound field sound source
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本标准规定了听者感觉等响的持续性纯音的频率和声压级之间的关系。数据以附录A中的图和附录B中的表的形式给出。

Scope

This standard specifies the relationship between the frequency and sound pressure level of continuous pure tones that are perceived by the listener to be equally loud. The conditions on which the specification is based are as follows: a) the sound field in the absence of the listener consists of free plane traveling waves; b) the sound source is in front of the listener; c) the sound signal is a pure tone; d) the sound pressure level is at the center of the listener's head Position measurement, but the listener is not present; e) binaural audiometry; f) the listener is normal ear subjects aged 18 to 25 years old. The data are given in the form of graphs in Appendix A and tables in Appendix B. According to GB/T 3240 1982, commonly used frequencies include 1/3 octave center frequency from 20 Hz to 12 500 Hz

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