Sound Quality Evaluation Method for Engine Combustion Noise with Consideration of Perceived Fluctuation (First Report)

変動感を考慮した燃焼騒音の音質評価法(第1報)

The research discussed in this paper studied a method of quantifying the sound quality of combustion noise identified using a method of extracting the contribution of combustion noise from vehicle interior noise during acceleration in the time domain. Subjective evaluation tests using Scheffe’s paired comparison method were conducted, involving the presentation of multiple types of combustion noise to 14 NVH development experts via a headphone-playback system. Based on the results of subjective evaluation tests, fluctuation intensity, a psychoacoustic metric, was employed in the development of the dissonant combustion noise index (DCNI) as a new objective evaluative index for the sound quality of combustion noise. A new technique that couples the method of extraction of the contribution of combustion noise in the time domain with the new index DCNI was used to analyze the combustion noise of Japanese Kei small car models, and the results demonstrated that the technique is able to provide an accurate quantitative grasp of the relative sound quality of combustion noise.以前,加速時の車室内音から燃焼騒音を時系列寄与分離する手法を報告した.この手法で得られた燃焼騒音の音質良否を定量化するため,複数の燃焼騒音を提示音とし,エキスパート14名に対して一対比較法による主観評価実験を実施した.その結果と提示音の分析結果から,音の変動強さを考慮した新しい音質評価指標を開発した.

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  • English
  • Japanese

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  • Accession Number: 01679966
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Jul 26 2018 3:01PM