Department of Speech and Hearing Science, University of Illinois Urbana-Champaign, Champaign, Illinois 61820, USA.
Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina 29425,
JASA Express Lett. 2023 Apr 1;3(4). doi: 10.1121/10.0017772.
This study examined the recognition of spectrally shaped syllables and sentences in speech-modulated noise by younger and older adults. The effect of spectral shaping and speech level on temporal amplitude modulation cues was explored through speech vocoding. Subclinical differences in hearing thresholds in older adults were controlled using threshold matching noise. Older, compared to younger, adults had poorer recognition but similar improvements as the bandwidth of the shaping function increased. Spectral shaping may enhance the sensation level of glimpsed speech, which improves speech recognition in noise, even with mild elevations in hearing thresholds.
本研究探讨了年轻人和老年人对语音调制噪声中频谱成形音节和句子的识别。通过语音声码器探索了频谱成形和语音水平对时间幅度调制线索的影响。使用阈匹配噪声控制老年人的阈下听力差异。与年轻人相比，老年人的识别能力较差，但随着成形函数带宽的增加，识别能力的提高相似。频谱成形可以提高瞥见语音的感觉水平，从而提高噪声中的语音识别能力，即使听力阈值轻度升高也是如此。
