The Impact of Pitch and Timbre Cues on Auditory Grouping and Stream Segregation.
The Impact of Pitch and Timbre Cues on Auditory Grouping and Stream Segregation.
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DOI：
10.3389/fnins.2021.725093
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发表时间：
2021
影响因子：
4.3
通讯作者：
Tilbrook GA
中科院分区：
文献类型：
--
作者：
Oh Y;Zuwala JC;Salvagno CM;Tilbrook GA
在多人收听环境中，不同语音流的叠加可能会导致每个来源的单独消息失真，从而导致理解缺陷。语音特征（例如音调和音色）是听觉感知的主要维度，并且在根据传入声音的声学特性对其进行分组和分离方面发挥着至关重要的作用。当前的研究调查了音调和音色线索（分别由基频（分别表示为 F0 和频谱斜率确定）如何影响听觉流范例中复杂音调序列的感知整合和分离。 20 名听力正常的听众参与了传统的听觉流实验，使用谐波音复合体 A 和 B 的两个交替序列并操纵 F0 和频谱斜率。分组范围，即发生听觉分组的 F0/频谱斜率范围，通过音调 A 和 B 之间的各种 F0/频谱斜率差异进行测量。结果表明，在音调 A 和 B 之间不存在 F0/频谱斜率差异的情况下，分组范围最大化，并且当它们的差异增加到 ±1 半音 F0 和 ±1 dB/倍频程频谱斜率时，分组范围减少 2 倍。换句话说，F0 或频谱斜率差异的增加使听众能够更容易地区分谐波刺激，从而减少将它们组合在一起的情况。这些发现表明，音调/音色差异线索在我们如何感知听觉流中的谐波声音方面发挥着重要作用，代表了我们在多说话者聆听环境中对人声进行分组或分离的能力。
In multi-talker listening environments, the culmination of different voice streams may lead to the distortion of each source’s individual message, causing deficits in comprehension. Voice characteristics, such as pitch and timbre, are major dimensions of auditory perception and play a vital role in grouping and segregating incoming sounds based on their acoustic properties. The current study investigated how pitch and timbre cues (determined by fundamental frequency, notated as F0, and spectral slope, respectively) can affect perceptual integration and segregation of complex-tone sequences within an auditory streaming paradigm. Twenty normal-hearing listeners participated in a traditional auditory streaming experiment using two alternating sequences of harmonic tone complexes A and B with manipulating F0 and spectral slope. Grouping ranges, the F0/spectral slope ranges over which auditory grouping occurs, were measured with various F0/spectral slope differences between tones A and B. Results demonstrated that the grouping ranges were maximized in the absence of the F0/spectral slope differences between tones A and B and decreased by 2 times as their differences increased to ±1-semitone F0 and ±1-dB/octave spectral slope. In other words, increased differences in either F0 or spectral slope allowed listeners to more easily distinguish between harmonic stimuli, and thus group them together less. These findings suggest that pitch/timbre difference cues play an important role in how we perceive harmonic sounds in an auditory stream, representing our ability to group or segregate human voices in a multi-talker listening environment.
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影响因子：
2.8
作者：
Cusack, R;Roberts, B
通讯作者：
Roberts, B
影响因子：
2.4
作者：
Singh, PG;Bregman, AS
通讯作者：
Bregman, AS
影响因子：
2.4
作者：
Vliegen, J;Oxenham, AJ
通讯作者：
Oxenham, AJ
影响因子：
2.4
作者：
CHERRY, EC
通讯作者：
CHERRY, EC
DOI：
10.1044/1092-4388(2001/002
发表时间：
2001-02-01
影响因子：
2.6
作者：
Mackersie, CL;Prida, TL;Stiles, D
通讯作者：
Stiles, D