The influence of tone length and S/N-ratio on the perception of tonal content : An application of probabilistic choice models in car acoustics

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概要

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• The rating of tonal content is not just a prevalent issue in the context of sound design but also in annoyance/noise problems. Two physical parameters influencing the evaluated tonal content are tone length and S/N-ratio. In order to integrate these parameters into a reliable, objective measure of the perceived tonal content of interior car noises the following experiments were conducted: Realistic "howling," i.e. the tonal content, in interior car noise were presented with variations in tone length and S/N ratio. Thirteen stimuli were judged by 41 subjects in a complete pair comparison. It was shown that subjective judgments can be modeled by probabilistic choice models quite well. An one-dimensional choice model, i.e. the BTL model, must be rejected in favor of a more general elimination-by-aspect model. The results are the following: (1) The subject's decision aspects are identified by modeling the choice behavior: A non-howling aspect describes the sound evoking a sensation not described by the howling adjective and a pitch-salience aspect indicates the equivalent S/N-ratio of a tonal component. No subjective duration aspect was found. (2) The log-ratio scale obtained yields a constant factor for doubling the length in an interval from 250 ms to 2,000 ms with equal level as well as a constant factor for each increase by 3dB. Furthermore, the tonal content conception and implications thereof are introduced and discussed.

• 社団法人日本音響学会の論文

著者

• Hansen Hans

  C.v.ossietzky University Institute Of Physics Acoustics Group

• Weber Reinhard

  Acoustics Group Inst. Of Physics Carl Von Ossietzky Univ.

• Weber Reinhard

  C.v.Ossietzky University, Institute of Physics, Acoustics Group

関連論文

• Partial loudness as a measure of the magnitude of tonal content
• The influence of tone length and S/N-ratio on the perception of tonal content : An application of probabilistic choice models in car acoustics

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