NON-SPECTRAL PITCH
NON-SPECTRAL PITCH
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DOI：
10.1121/1.381166
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发表时间：
1976-01-01
影响因子：
2.4
通讯作者：
VIEMEISTER, NF
中科院分区：
文献类型：
--
作者：
BURNS, EM;VIEMEISTER, NF
调幅宽带噪声的频谱不随调制频率的变化而变化，因此这种波形不能通过频谱变化来传达旋律信息。正弦幅度调制的宽带噪声确实具有类似音调的特性。当音符对应于不同的调制频率时，可以识别简单的旋律。受过音乐训练的观察者（人类）可以立即识别出由这种波形组成的旋律音乐间隔。当调制噪声被带通滤波时，以及当未调制的带阻掩蔽被添加到带通噪声时，调制噪声的类音调特性被保持。据推测，调制噪声引起的音高感知是基于波形包络中的时间信息。这种时间音高比纯音引起的音高不那么突出。只有在有限的调制频率范围内才能引出时间音高。上限（约850-1000 Hz）似乎反映了听觉系统无法跟随快速的时间变化。
The spectrum of amplitude-modulated wide-band noise was invariant with changes in modulation frequency, and consequently such waveforms cannot convey melodic information by spectral changes. Sinusoidally amplitude-modulated wide-band noise did have pitchlike properties. Simple melodies can be identified when the notes correspond to different modulation frequencies. Musically trained observers [human] could immediately recognize melodic musical intervals composed of such waveforms. The pitchlike properties of modulated noise were maintained when the modulated noise was bandpass filtered and when an unmodulated band-reject masker was added to the bandpass noise. Presumably the perception of pitch elicited by modulated noise was based upon temporal information in the envelope of the waveform. This temporal pitch was less salient than the pitch elicited by pure tones. Temporal pitch could be elicited only over a restricted range of modulation frequencies. The upper limit (approximately 850-1000 Hz) appears to reflect the inability of the auditory system to follow rapid temporal changes.