Auditory gist: Recognition of very short sounds from timbre cues
Auditory gist: Recognition of very short sounds from timbre cues
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DOI：
10.1121/1.4863659
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发表时间：
2014-03-01
影响因子：
2.4
通讯作者：
Pressnitzer, Daniel
中科院分区：
文献类型：
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作者：
Suied, Clara;Agus, Trevor R.;Pressnitzer, Daniel
诸如声音或乐器之类的声音可以仅根据音色来识别。在这里，我们在严重减少音色线索的情况下研究了声音识别。从大型语料库中提取自然录制的声音的短片段。听众被要求报告其他声音（例如乐器）中的目标类别（例如歌声）。所有声音类别都覆盖相同的音调范围，因此必须仅根据音色提示来解决任务。研究发现，性能高于偶然性的最短持续时间很短，约为几毫秒，语音目标的性能最佳。性能与音高无关，并且当刺激包含少于完整波形周期时保持不变。与随机开始时间提取声音片段相比，当声音片段与声音开始时间对齐时，识别效果通常并不更好。最后，表现并不依赖于反馈或训练，这表明听众在人工门控任务中使用的提示与更长、更熟悉的声音相关的提示类似。结果表明，声音识别的音色线索在各种时间尺度上都可用，包括非常短的时间尺度。 (C) 2014 年美国声学学会。
Sounds such as the voice or musical instruments can be recognized on the basis of timbre alone. Here, sound recognition was investigated with severely reduced timbre cues. Short snippets of naturally recorded sounds were extracted from a large corpus. Listeners were asked to report a target category (e. g., sung voices) among other sounds (e. g., musical instruments). All sound categories covered the same pitch range, so the task had to be solved on timbre cues alone. The minimum duration for which performance was above chance was found to be short, on the order of a few milliseconds, with the best performance for voice targets. Performance was independent of pitch and was maintained when stimuli contained less than a full waveform cycle. Recognition was not generally better when the sound snippets were time-aligned with the sound onset compared to when they were extracted with a random starting time. Finally, performance did not depend on feedback or training, suggesting that the cues used by listeners in the artificial gating task were similar to those relevant for longer, more familiar sounds. The results show that timbre cues for sound recognition are available at a variety of time scales, including very short ones. (C) 2014 Acoustical Society of America.