Rotman Research Institute, Baycrest, Toronto, Ontario, Canada.
Department of Psychology, University of Toronto, Toronto, Ontario, Canada.
Trends Hear. 2020 Jan-Dec;24:2331216520967850. doi: 10.1177/2331216520967850.
Comprehension of speech masked by background sound requires increased cognitive processing, which makes listening effortful. Research in hearing has focused on such challenging listening experiences, in part because they are thought to contribute to social withdrawal in people with hearing impairment. Research has focused less on positive listening experiences, such as enjoyment, despite their potential importance in motivating effortful listening. Moreover, the artificial speech materials-such as disconnected, brief sentences-commonly used to investigate speech intelligibility and listening effort may be ill-suited to capture positive experiences when listening is challenging. Here, we investigate how listening to naturalistic spoken stories under acoustic challenges influences the quality of listening experiences. We assess absorption (the feeling of being immersed/engaged in a story), enjoyment, and listening effort and show that (a) story absorption and enjoyment are only minimally affected by moderate speech masking although listening effort increases, (b) thematic knowledge increases absorption and enjoyment and reduces listening effort when listening to a story presented in multitalker babble, and (c) absorption and enjoyment increase and effort decreases over time as individuals listen to several stories successively in multitalker babble. Our research indicates that naturalistic, spoken stories can reveal several concurrent listening experiences and that expertise in a topic can increase engagement and reduce effort. Our work also demonstrates that, although listening effort may increase with speech masking, listeners may still find the experience both absorbing and enjoyable.
背景音掩蔽下的言语理解需要增加认知处理,这使得聆听变得费力。听力研究集中在这种具有挑战性的聆听体验上,部分原因是人们认为这些体验会导致听力障碍者的社交退缩。尽管积极的聆听体验(如享受)可能对激励费力的聆听很重要,但它们在研究中却较少受到关注。此外,用于研究言语可懂度和聆听费力的人工语音材料(如不连贯的简短句子)可能不适合在聆听具有挑战性时捕捉积极的体验。在这里,我们研究了在声学挑战下聆听自然的口语故事如何影响聆听体验的质量。我们评估了沉浸感(沉浸/参与故事的感觉)、享受度和聆听费力程度,并表明:(a)尽管聆听费力增加,但中度语音掩蔽对故事的沉浸感和享受度的影响极小;(b)主题知识在多说话人背景噪声中听故事时会增加沉浸感和享受度,并降低聆听费力;(c)随着个体在多说话人背景噪声中连续听几个故事,沉浸感和享受度会增加,费力程度会降低。我们的研究表明,自然的、口语化的故事可以揭示出几种同时存在的聆听体验,并且主题知识可以增加参与度并降低费力程度。我们的工作还表明,尽管语音掩蔽会增加聆听费力,但听众仍然可能会觉得这种体验既吸引人又愉快。