How to Interpret the A-weighted Sound Pressure Level and Its Application and Prospects in Audiology
GAO Wei
LI Xingqi
Abstract：Weighted sound pressure level measures are widely used and play an important role in various fields including biomedicine,environmental monitoring,music production,and acoustic engineering.They involve weighted filtering on environmental noises according to the test objects and the test goals.Weighting can not only simulate the auditory characteristics of human beings but also meet the application requirements in acoustic engineering.It includes A,B,C,D and Z weighting curves,with B and D weightings no longer in use.A weighting is widely used in the measurement of background noise in audiometric rooms.We proposed to apply weighting to the measurement of background noise in the sound-insulated shielding room for animal experiments.In the design of hearing aids,application of weighting can not only improve users'hearing but also protect them from noise interference.Protective headphones can not only block damaging noise but also achieve the purpose of protecting hearing.This article also elaborates on the future trends in the development of weighting,future application of weighting technologies in combination with AI,and interprets the important value of weighting in optimizing sound perception and signal quality.
Keywords：weightingbackground noiseA-weighting
Publication Date：2025-11-20
Online Publishing Date：2025-10-29(First online date of this platform, not the publication date of the document)
Pages：5( 995-999 )