Bottalico Pasquale, Passione Ivano Ipsaro, Graetzer Simone, Hunter Eric J
Voice Biomechanics and Acoustics Laboratory, Department of Communicative Sciences and Disorders, Michigan State University, East Lansing, Michigan, United States of America.
Acta Acust United Acust. 2017 Jan-Feb;103(1):169-172. doi: 10.3813/AAA.919043. Epub 2017 Jan 1.
Speakers increase their vocal effort when their communication is disturbed by noise. This adaptation is termed the Lombard effect. The aim of the present study was to determine whether this effect has a starting point. Hence, the effects of noise at levels between 20 and 65 dB(A) on vocal effort (quantified by sound pressure level) and on both perceived noise disturbance and perceived vocal discomfort were evaluated. Results indicate that there is a Lombard effect change-point at a background noise level (Ln) of 43.3 dB(A). This change-point is anticipated by noise disturbance, and is followed by a high magnitude of vocal discomfort.
当交流受到噪音干扰时,说话者会加大发声力度。这种适应性变化被称为伦巴德效应。本研究的目的是确定这种效应是否有一个起始点。因此,评估了20至65分贝(A)之间的噪音水平对发声力度(通过声压级量化)以及对感知到的噪音干扰和感知到的发声不适的影响。结果表明,在背景噪音水平(Ln)为43.3分贝(A)时存在伦巴德效应变化点。这个变化点由噪音干扰预示,随后会出现高度的发声不适。