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The relationship between talker acoustics, intelligibility, and effort in degraded listening conditions.
The Journal of the Acoustical Society of America ( IF 2.4 ) Pub Date : 2020-05-08 , DOI: 10.1121/10.0001212
Maximillian Paulus 1 , Valerie Hazan 1 , Patti Adank 1
Affiliation  

Listening to degraded speech is associated with decreased intelligibility and increased effort. However, listeners are generally able to adapt to certain types of degradations. While intelligibility of degraded speech is modulated by talker acoustics, it is unclear whether talker acoustics also affect effort and adaptation. Moreover, it has been demonstrated that talker differences are preserved across spectral degradations, but it is not known whether this effect extends to temporal degradations and which acoustic-phonetic characteristics are responsible. In a listening experiment combined with pupillometry, participants were presented with speech in quiet as well as in masking noise, time-compressed, and noise-vocoded speech by 16 Southern British English speakers. Results showed that intelligibility, but not adaptation, was modulated by talker acoustics. Talkers who were more intelligible under noise-vocoding were also more intelligible under masking and time-compression. This effect was linked to acoustic-phonetic profiles with greater vowel space dispersion (VSD) and energy in mid-range frequencies, as well as slower speaking rate. While pupil dilation indicated increasing effort with decreasing intelligibility, this study also linked reduced effort in quiet to talkers with greater VSD. The results emphasize the relevance of talker acoustics for intelligibility and effort in degraded listening conditions.

中文翻译:

说话者的声学、可懂度和在退化的聆听条件下的努力之间的关系。

聆听降级的语音与降低可懂度和增加努力有关。然而,听众通常能够适应某些类型的降级。虽然退化语音的可懂度受到说话者声学的调节,但不清楚说话者的声学是否也会影响努力和适应。此外,已经证明说话者的差异在频谱退化中得以保留,但尚不清楚这种影响是否延伸到时间退化以及哪些声学-语音特征是负责任的。在与瞳孔测量相结合的听力实验中,16 名英国南部英语使用者向参与者展示了安静的语音以及掩蔽噪声、时间压缩和噪声声码语音的语音。结果表明,可理解性,但不是适应,由说话者声学调制。在噪声语音编码下更容易理解的说话者在掩蔽和时间压缩下也更容易理解。这种效果与具有更大元音空间分散 (VSD) 和中频能量以及较慢语速的声学语音配置文件有关。虽然瞳孔扩张表明随着可懂度的降低而努力增加,但这项研究还将安静时努力的减少与具有更大VSD的说话者联系起来。结果强调了说话者声学与在退化的聆听条件下的可理解性和努力的相关性。以及较慢的语速。虽然瞳孔扩张表明随着可懂度的降低而努力增加,但这项研究还将安静时努力的减少与具有更大VSD的说话者联系起来。结果强调了说话者声学与在退化的聆听条件下的可理解性和努力的相关性。以及较慢的语速。虽然瞳孔扩张表明随着可懂度的降低而努力增加,但这项研究还将安静时努力的减少与具有更大VSD的说话者联系起来。结果强调了说话者声学与在退化的聆听条件下的可理解性和努力的相关性。
更新日期:2020-05-08
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