GB/T 4963-2007
ActiveAcoustics - Normal equal-loudness-level contours
声学 标准等响度级曲线
Application Summary AI generated
GB/T 4963-2007 defines the standard equal-loudness-level contours, which map the relationship between sound pressure level and frequency for tones perceived as equally loud by human hearing. It is applied in acoustics testing and product design, such as for audio equipment, noise assessment in workplaces, and environmental noise evaluation, to ensure sound measurements align with human auditory perception. This standard is critical for engineers and procurement professionals in industries like consumer electronics, automotive, and occupational safety to specify and verify sound quality and noise control.
Related Standards
GB/T 7582-2004
Acoustics--Statistical distribution of hearing thresholds as a function of age
GB/T 4854.1-2004
Acoustics--Reference zero for the calibration of audiometric equipment--Part1:Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
GB/Z 21233-2007
Acoustics - Assessment of noise annoyance by means of social and socio-acoustics surveys
GB/T 4854.4-1999
Acoustics--Reference zero for the calibration of audiometric equipment--Part 4:Reference levels for narrow-band masking noise
GB/T 4854.7-1999
Acoustics--Reference zero for the calibration of audiometric equipment--Part 7:Reference threshold of hearing under free-field and diffuse-field listening conditions
GB/T 17696-1999
Acoustics--Audiometric test methods--Part 3:Speech audiometry
GB/T 17249.1-1998
Acoustics--Guidelines for the design of low-noise workplaces--Noise control strategies
GB/T 17250-1998
Acoustics--Measurement of noise emitted by passenger cars under conditions representative of urban driving
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.