Allen J B, Hall J L, Jeng P S
AT&T Bell Laboratories, Murray Hill, New Jersey 07974-2070.
J Acoust Soc Am. 1990 Aug;88(2):745-53. doi: 10.1121/1.399778.
In this paper, a method that has been developed for the assessment and quantification of loudness perception in normal-hearing and hearing-impaired persons is described. The method has been named LGOB, which stands for loudness growth in 1/2-octave bands. The method uses 1/2-octave bands of noise, centered at 0.25, 0.5, 1.0, 2.0, and 4.0 kHz, with subjective levels between a subject's threshold of hearing and the "too loud" level. The noise bands are presented to the subject, randomized over frequency and level, and the subject is asked to respond with a loudness rating (one of: VERY SOFT, SOFT, OK, LOUD, VERY LOUD, TOO LOUD). Subject responses (normal and hearing-impaired) are then compared to the average responses of a group of normal-hearing subjects. This procedure allows one to estimate the subject's loudness growth relative to normals, as a function of frequency and level. The results may be displayed either as isoloudness contours or as recruitment curves. In its present form, the measurements take less than 30 min. The signal presentation and analysis is done using a PC and a PC plug-in board having a digital to analog converter.
本文描述了一种已开发出来的用于评估和量化正常听力者及听力受损者响度感知的方法。该方法被命名为LGOB，即1/2倍频程带中的响度增长。该方法使用以0.25、0.5、1.0、2.0和4.0 kHz为中心的1/2倍频程噪声带，主观水平介于受试者的听阈和“太响”水平之间。将这些噪声带以频率和水平随机呈现给受试者，并要求受试者以响度评级做出反应（选项包括：非常轻柔、轻柔、合适、响亮、非常响亮、太响）。然后将受试者（正常听力者和听力受损者）的反应与一组正常听力受试者的平均反应进行比较。此程序使人们能够估计受试者相对于正常人的响度增长情况，作为频率和水平的函数。结果可以以等响度轮廓或重振曲线的形式显示。以其目前的形式，测量时间不到30分钟。信号呈现和分析使用个人电脑以及带有数模转换器的电脑插件板来完成。
