Hickson L, Byrne D
Department of Speech Pathology and Audiology, University of Queensland, Australia,
J Am Acad Audiol. 1997 Oct;8(5):322-32.
Single-channel syllabic compression amplification may increase the consonant-vowel ratio (CVR). This study was conducted to investigate the effect of CVR increases, associated with syllabic compression, on consonant perception in quiet for people with normal hearing and those with sensorineural hearing impairment. Fifteen hearing-impaired and 15 normal-hearing older people were assessed with different versions of the Nonsense Syllable Test, which had been recorded with linear and compression amplification (compression ratio = infinity). Overall scores did not differ significantly with type of amplification for both subject groups. Analysis of classes of sounds revealed the differential effect of type of amplification for the subject groups. This study highlights the need for audiologists to be aware that applying amplification that raises the level of consonants in relation to vowels is not always beneficial for people with hearing impairment, as the evidence indicates that CVR may be a cue to the perception of some consonants.
单通道音节压缩放大可能会提高辅音-元音比率（CVR）。本研究旨在调查与音节压缩相关的CVR增加对听力正常者和感音神经性听力障碍者在安静环境中辅音感知的影响。15名听力受损的老年人和15名听力正常的老年人接受了不同版本的无意义音节测试评估，这些测试使用线性放大和压缩放大（压缩比=无穷大）进行录制。两个受试组的总体得分在放大类型上没有显著差异。对声音类别的分析揭示了放大类型对受试组的不同影响。本研究强调听力学家需要意识到，应用提高辅音相对于元音水平的放大对听力障碍者并不总是有益的，因为证据表明CVR可能是某些辅音感知的一个线索。
