The acoustic reflex threshold: not predictive for loudness perception in normally-hearing listeners.

S O Olsen, A N Rasmussen, L H Nielsen, B V Borgkvist
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引用次数: 23

Abstract

The working hypothesis of an ongoing study is that the quick and reliable procedure of acoustic reflex threshold (ART) determination in conjunction with measurements of HTL may yield accurate estimates of loudness. The aim of this study was to investigate whether differences in loudness in normally-hearing subjects are reflected in the ARTs and to collect normal material with respect to pure-tone elicited ART and loudness categories. Categorical loudness scaling (CLS) and ART measurements were performed at frequencies of 0.5, 1, 2 and 4 kHz in 60 normally-hearing subjects (HTL<20 dB HL, 26 males, 34 females, aged 21-63 years) with no history or sequelae of middle ear disease. Subjects reporting disturbing tinnitus were excluded. The results show that the ART is not a predictor of individual loudness perception for normally-hearing subjects. Using a numerical scale (HTL=0, 'very soft'=5, 'soft'=15, 'OK'=25, 'loud'=35, 'very loud'=45 and 'too loud'=50) loudness for pure tones grows almost linearly at approximately 0.4 arbitrary loudness units per dB below the 'loud' category. Above the 'loud' category the slope is around 1 unit per dB. The median ART was 85 dB HL at frequencies of 0.5, 1, 2 and 4 kHz. No differences in loudness perception across frequencies were found.

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声学反射阈值:不能预测正常听力听者的响度感知。
一项正在进行的研究的工作假设是,快速可靠的声反射阈值(ART)测定过程与HTL测量相结合,可能会产生准确的响度估计。本研究的目的是调查听力正常受试者的响度差异是否反映在艺术中,并收集有关纯音诱发的艺术和响度类别的正常材料。对60名听力正常的受试者在0.5、1、2和4 kHz频率下进行分类响度标度(CLS)和ART测量
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