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Deriving Room Acoustical Parameters Using Arrays and Hearing Models

机译:使用阵列和听觉模型推导室内声学参数

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Acousticians use acoustical parameters to express the acoustical qualities of concert halls, or any other room. These parameters are generally determined from impulse responses of the room, either measured or simulated. Common examples are the reverberation time RT, the clarity index C_(80) and the interaural cross-correlation IACC. In order to be able to compare different rooms, or to make valid predictions when a room is still in the design phase, these parameters should of course be accurate, and more importantly, have a high correlation with the subjective attributes which they should express. However, De Vries et al. showed in 2001 using measurements along closely spaced microphone positions (array measurements) that parameters for spaciousness may fluctuate severely as a function of measurement position over small intervals, whereas the perceptual cues remain constant [1]. This shows that these parameters are not reliable for assessing room acoustical qualities. Also other authors reported these unwanted spatial deviations, even when measuring within one seat [2].
机译:声学师使用声学参数来表达音乐厅或任何其他房间的声学质量。这些参数通常由房间的脉冲响应来确定,可以通过测量或模拟来确定。常见示例是混响时间RT,清晰度指标C_(80)和双耳互相关IACC。为了能够比较不同的房间,或在房间仍处于设计阶段时做出有效的预测,这些参数当然应该是准确的,更重要的是,应与它们应表达的主观属性高度相关。然而,De Vries等。在2001年使用沿紧密间隔的麦克风位置进行的测量(阵列测量)表明,在很小的间隔内,作为测量位置的函数,宽敞度的参数可能会剧烈波动,而感知线索则保持不变[1]。这表明这些参数对于评估室内声学质量是不可靠的。其他作者也报告了这些有害的空间偏差,即使在一个座位上进行测量时也是如此[2]。

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