Continuous judgment of sound quality of electric home appliances
Continuous judgment of sound quality of electric home appliances
复制标题
持续判断家电产品音质
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
J. Putner
中科院分区：
文献类型：
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作者：
S. Kuwano;S. Namba;H. Fastl;J. Putner
机械噪声的音质是多维的，通常用语义差分来检测。在这种情况下，音质的整体印象是判断。然而，音质可能会根据声音的时间流而变化。本研究采用线长连续判断法来判断家电产品的音质。41种家用电器的声音以随机顺序连接在一起，声音之间有轻微的间隔。在8分钟的刺激中包含原始声音及其修改后的声音。实验是在慕尼黑工业大学进行的。10名德国参与者加入了实验。他们进行了三次测试，分别对声音的响亮、尖锐和不愉快的瞬间印象进行判断。主观反应每100毫秒采样一次。测量每100ms LAeq、LLz(p)、计算锐度和舒适度指数（CI）的值。总体而言，物理指标与主观判断表现出良好的相关性。另一方面，当在有限的范围内考察物理指标与主观判断之间的关系时，发现了不同的趋势。为了找到改善音质的线索，最好是沿着时间流详细地检查音质。
The sound quality of machinery noises is multi-dimensional and is often examined using semantic differential. In this case the overall impression of sound quality is judged. However, sound quality may vary according to the temporal stream of sounds. In this study, sound quality of electric home appliances was judged using the continuous judgment by line length. Forty-one kinds of the sound of home electric appliances were connected in random sequences with a slight interval between the sounds. The original sounds and their modified sounds were included in the stimulus of 8 min. The experiment was conducted in Technische Universiat Munchen. Ten German participants joined the experiment. They conducted three sessions in which they judged the instantaneous impression of loudness, sharpness and unpleasantness, respectively. The subjective responses were sampled every 100ms. The values of every 100ms of LAeq, LLz(p), calculated sharpness and comfort index (CI) were measured. As a whole the physical metrics showed good correlation with subjective judgments. On the other hand, when the relation between physical metrics and subjective judgments was examined in a limited portion, different tendency was found. It would be better to examine the sound quality along the temporal stream in detail in order to find the clues to improve the sound quality.