PERCEIVING VOWELS IN THE PRESENCE OF ANOTHER SOUND - CONSTRAINTS ON FORMANT PERCEPTION
PERCEIVING VOWELS IN THE PRESENCE OF ANOTHER SOUND - CONSTRAINTS ON FORMANT PERCEPTION
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DOI：
10.1121/1.391610
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发表时间：
1984-01-01
影响因子：
2.4
通讯作者：
DARWIN, CJ
中科院分区：
文献类型：
--
作者：
DARWIN, CJ
人类的语音通常是在其他声音的背景下听到的，但人们很难理解感知地孤立特定说话者的语音的能力。通过两种不同的方式，听者可以决定一个元音的和声是否构成元音的一部分，S基本音调。首先，从元音开始或结束在不同时间的声调作为元音的一部分被听到的可能性低于与元音同时出现的声调；无论该声调是添加到正常的元音上还是添加到已经在声调频率处能量降低的元音上，这种影响都会发生。其次，在元音附近的谐频与元音同时加入的能量S第一共振峰可能会也可能不会被完全并入元音感知，这取决于它与第一共振峰的关系：当额外的声调必须低于元音“S第一共振峰频率时，它被并入的可能性低于以略高于第一共振峰频率的频率添加的能量。显然，只有在将声波的特性归类到不同的表观声源之后，才能估计共振峰。第一个结果说明了执行知觉分组的一般听觉机制，而第二个结果说明了可能使用对声道传递函数的更特定约束的机制。
Human speech is normally heard against a background of other sounds, yet the ability to isolate perceptually the speech of a particular talker is poorly understood. Two different ways in which a listener may decide whether a tone, at a harmonic of a vowel''s fundamental, forms part of the vowel are illustrated. First, a tone that starts or stops at a different time from a vowel is less likely to be heard as part of that vowel than if it is simultaneous with it; this effect occurs regardless of whether the tone has been added to a normal vowel or to a vowel that has already been reduced in energy at the tone''s frequency. Second, energy added simultaneously with a vowel at a harmonic frequency near to the vowel''s 1st formant may or may not be fully incorporated into the vowel percept, depending on its relation to the 1st formant: When the additional tone is must below the vowel''s 1st formant frequency, it is less likely to be incorporated than energy that is added at a frequency just above the 1st formant. Formants evidently may only be estimated after properties of the sound wave have been grouped into different apparent sound sources. The 1st result illustrates a general auditory mechanism for performing perceptual grouping, while the 2nd result illustrates a mechanism that may use a more specific constraint on vocal-tract transfer functions.