GB/T 4963-2007 (English Version) PDF

Standard No.: GB/T 4963-2007
Language: Chinese, Available in English version
Release Date: 2007
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 4963-2007
Replace: GB/T 4963-1985

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

GB/T 4963-2007 Referenced Document

2007 GB/T 4963-2007 Acoustics.Normal equal-loudness-level contours
1985 GB/T 4963-1985 Normal equal-loudness contours for pure tones under free field listening conditions