AUDIOMETRIC ZERO LEVEL AT INFRASONIC FREQUENCIES

DAI Hai-quan. AUDIOMETRIC ZERO LEVEL AT INFRASONIC FREQUENCIES[J]. ACTA ACUSTICA, 1988, 13(2): 150-154. DOI: 10.15949/j.cnki.0371-0025.1988.02.011

Citation:

DAI Hai-quan. AUDIOMETRIC ZERO LEVEL AT INFRASONIC FREQUENCIES[J]. ACTA ACUSTICA, 1988, 13(2): 150-154. DOI: 10.15949/j.cnki.0371-0025.1988.02.011

Citation:

DAI Hai-quan. AUDIOMETRIC ZERO LEVEL AT INFRASONIC FREQUENCIES[J]. ACTA ACUSTICA, 1988, 13(2): 150-154. DOI: 10.15949/j.cnki.0371-0025.1988.02.011

Abstract

The audiometric zero level has been measured in the frequency range 2-100 Hz,with particular attention to frequencies below 25 Hz.The author's result shows that the threshold curves turn to be straight and decrease slowly when the frequency is decreasing below 20-25 Hz.It is unlike the M.A.P.and M.A.F.obtained by some previous authors.Possible explanation for this phenomen on is suggested.

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