Perceptual systems in all modalities are predominantly sensitive to stimulus change, and many examples of perceptual systems responding to change can be portrayed as instances of enhancing contrast. Multiple findings from perception experiments serve as evidence for spectral contrast explaining fundamental aspects of perception of coarticulated speech, and these findings are consistent with a broad array of known psychoacoustic and neurophysiological phenomena. Beyond coarticulation, important characteristics of speech perception that extend across broader spectral and temporal ranges may best be accounted for by the constant calibration of perceptual systems to maximize sensitivity to change.

中文翻译：

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改变言语感知的敏感性。

所有形式的知觉系统主要对刺激变化敏感，可以将许多对变化做出反应的知觉系统的例子描述为增强对比的实例。感知实验的多个发现可作为频谱对比的证据，解释了关节发音感知的基本方面，这些发现与各种已知的心理声学和神经生理现象一致。除协同发音外，语音感知的重要特征可能会跨越更宽的频谱和时间范围，这可能是通过不断校准感知系统以最大程度地提高变化敏感性来解决的。