Fast recognition of musical sounds based on timbre
Fast recognition of musical sounds based on timbre
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DOI：
10.1121/1.3701865
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发表时间：
2012-05-01
影响因子：
2.4
通讯作者：
Pressnitzer, Daniel
中科院分区：
文献类型：
--
作者：
Agus, Trevor R.;Suied, Clara;Pressnitzer, Daniel
人类听众似乎有一种令人印象深刻的能力，可以识别各种各样的自然声音。然而，令人惊讶的是，很少有定量证据来描述这种基本能力。在这里，音乐声音识别的速度和准确性是用一个丰富但声学平衡的刺激集来测量的。这套录音包括乐器的音符和演唱的元音。在第一个实验中，收集了三个目标类别的反应时间：声音，打击乐器和弦乐。在进行/不进行的任务中，听众尽可能快地对目标类别的成员做出反应，而对干扰物（一组不同的乐器）保持反应。结果显示出近乎完美的准确性和快速的反应时间，特别是对声音。在第二个实验中，声音在字符串中被识别，反之亦然。同样，对声音的反应时间更快。在第三个实验中，听觉嵌合体被创造出来，只保留声音的频谱或时间特征。嵌合体被准确地识别出来，但没有自然声音那么快。总而言之，这些数据表明，基于对声源的复杂频谱-时间特征的选择性，音乐声音识别的神经机制是快速而准确的。(C)2012年美国声学学会。[http：//dx.doi.org/10.1121/1.3701865]
Human listeners seem to have an impressive ability to recognize a wide variety of natural sounds. However, there is surprisingly little quantitative evidence to characterize this fundamental ability. Here the speed and accuracy of musical-sound recognition were measured psychophysically with a rich but acoustically balanced stimulus set. The set comprised recordings of notes from musical instruments and sung vowels. In a first experiment, reaction times were collected for three target categories: voice, percussion, and strings. In a go/no-go task, listeners reacted as quickly as possible to members of a target category while withholding responses to distractors (a diverse set of musical instruments). Results showed near-perfect accuracy and fast reaction times, particularly for voices. In a second experiment, voices were recognized among strings and vice-versa. Again, reaction times to voices were faster. In a third experiment, auditory chimeras were created to retain only spectral or temporal features of the voice. Chimeras were recognized accurately, but not as quickly as natural voices. Altogether, the data suggest rapid and accurate neural mechanisms for musical-sound recognition based on selectivity to complex spectro-temporal signatures of sound sources. (C) 2012 Acoustical Society of America. [http://dx.doi.org/10.1121/1.3701865]