The benefit of binaural hearing in a cocktail party: Effect of location and type of interferer
The benefit of binaural hearing in a cocktail party: Effect of location and type of interferer
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DOI：
10.1121/1.1639908
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发表时间：
2004-02-01
影响因子：
2.4
通讯作者：
Culling, JF
中科院分区：
文献类型：
--
作者：
Hawley, ML;Litovsky, RY;Culling, JF
“鸡尾酒会问题”是使用虚拟刺激进行研究的，虚拟刺激的空间位置是使用来自奥迪数据库的消声头部相关脉冲响应生成的[Blauert et al.， J. Acoust]。Soc。[j].科学通报，2004,(3)。在有一个、两个或三个干扰源的情况下，测量了从正面呈现的哈佛IEEE句子的语音接收阈值（srt）。使用了四种类型的干扰：(1)同一说话者所说的其他句子，(2)同一说话者的时间反转句子，(3)语音频谱形噪声，(4)由句子的时间包络调制的语音频谱形噪声。每个干扰都与目标说话者的频谱相匹配。干扰被放置在几个空间构型中，或者与目标一致，或者与目标分离。双耳优势是通过从双耳听力中减去“单耳较好”听力的srt而得出的。对于单个干扰源，所有干扰源类型都有2-4 dB的双耳优势。对于两个或三个干扰，噪声和语音调制噪声的优势为2-4 dB，语音和时间反转语音的优势为6-7 dB。这些数据表明，无论空间结构如何，当在目标的不同位置存在多个浊音干扰时，双耳听力对语音清晰度的好处尤其明显；使用较少或其他类型干扰的测量可能低估了这种好处。(C) 2004美国声学学会。
The "cocktail party problem" was studied using virtual stimuli whose spatial locations were generated using anechoic head-related impulse responses from the AUDIS database [Blauert et al., J. Acoust. Soc. Am. 103, 3082 (1998)]. Speech reception thresholds (SRTs) were measured for Harvard IEEE sentences presented from the front in the presence of one, two, or three interfering sources. Four types of interferer were used: (1) other sentences spoken by the same talker, (2) time-reversed sentences of the same talker, (3) speech-spectrum shaped noise, and (4) speech-spectrum shaped noise, modulated by the temporal envelope of the sentences. Each interferer was matched to the spectrum of the target talker. Interferers were placed in several spatial configurations, either coincident with or separated from the target. Binaural advantage was derived by subtracting SRTs from listening with the "better monaural ear" from those for binaural listening. For a single interferer, there was a binaural advantage of 2-4 dB for all interferer types. For two or three interferers, the advantage was 2-4 dB for noise and speech-modulated noise, and 6-7 dB for speech and time-reversed speech. These data suggest that the benefit of binaural hearing for speech intelligibility is especially pronounced when there are multiple voiced interferers at different locations from the target, regardless of spatial configuration; measurements with fewer or with other types of interferers can underestimate this benefit. (C) 2004 Acoustical Society of America.