听觉辨别阈的测定 - 声学技术.pdf

梁之安　邵殿华　罗维之 ( , 200031) , ( ) ( ) ( f ) ( I ) () , f 1. 30. 6pps( pulses per sec. , ) , I 0.4 0. 2dB,0. 90. 3 , 2. 51. 1pps, 0. 50. 2dB 1. 20. 5 Measurement of auditory discriminating thresholds LIANG Zhian HAO Dianhua LUO Weizhi ( hanghai Instit ut e of Physiology , Chinese Academy of ciences, hanghai. 200031) / / , With a newly designed FM AM M sound stimulator accurate measurements of auditory discriminating ( ) , ( ) ( ) thresholds of frequency f intensity I and phase w ere performed psychophysically in humans and elect rophysiologically in guinea pigs. For normal hearing human subjects, the measured t hresholds amount t o 1. 30. 6 pps for f , 0. 40. 2dB for I , and 0. 90. 3 for . For normal hearing guinea pigs, they are 2. 51. 1pps, 0. 50. 2 dB and 1. 20. 5 , correspondingly . The designed stim ulator is simple in construction and easy t o manipulate and the operating principles are described in details. 1　引　言 2　调频调幅调相声刺激器的工 作原理 , [ 1] , f I , , ( , ) , , , , , [ 28] [ 5, 7] , , 1( ) a , ( ) ( 500pps ) f I , , : 1996-9-23