GB/T 4963-2007 Active National standards

GB/T 4963-2007 Acoustics—Normal equal-loudness-level contours

Publish Date: 2007-11-14 Implement Date: 2008-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 4963-2007

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Acoustic metrology

ICS Name: \nNoise (related to humans)

Publish Date: 2007-11-14

Implement Date: 2008-05-01

Pages: 20 pages

Scope

This standard specifies the relationship between the frequency and sound pressure level of a continuous pure tone that is perceived as equally loud by the listener. The conditions on which the standard is based are as follows: a) The sound field is composed of free plane wave propagation when the listener is not present; b) The sound source is located in front of the listener; c) The sound signal is a pure tone; d) The sound pressure level is measured at the center of the listener's head, but the listener is not present; e) Binaural hearing testing; f) The listener is a normal-hearing person aged between 18 and 25. The data are presented in the form of figures in Appendix A and tables in Appendix B. According to GB/T 3240—1982, the commonly used frequencies include the center frequencies of 1/3 octave bands from 20 Hz to 12,500 Hz.