Article | KEER2014. Proceedings of the 5th Kanesi Engineering and Emotion Research; International Conference; Linköping; Sweden; June 11-13 | Consideration of the Frequency Characteristics of a Sound System in a Traveling Vehicle
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Title:
Consideration of the Frequency Characteristics of a Sound System in a Traveling Vehicle
Author:
Tomoaki Hidaka: Honda Access Corporation, Japan Kyosuke Ochiai: Graduate School of Engineering, Ustunomiya University, Japan Yamato Makoto: Right-EAR Limited Liability Company, Japan Toshiyuki Kageyama: Honda Access Corporation, Japan Hiroshi Hasegawa: Graduate School of Engineering, Ustunomiya University, Japan
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Year:
2014
Conference:
KEER2014. Proceedings of the 5th Kanesi Engineering and Emotion Research; International Conference; Linköping; Sweden; June 11-13
Issue:
100
Article no.:
033
Pages:
423-430
No. of pages:
8
Publication type:
Abstract and Fulltext
Published:
2014-06-11
ISBN:
978-91-7519-276-5
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


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We conducted a subjective evaluation experiment to determine the optimal frequency characteristics for a car audio system during vehicle travel . In this experiment; the car interior noise typically generated when a vehicle travels at a speed of 60 km/h was added to the experimental sound sources; and subjective evaluation was made of the sound passed through filters modifying the frequency characteristics. A total of 10 types of sound sources were used in the evaluation (narration; fusion; classic; J-pop; vocal; healing; nature; jazz; rock; and pop). Five levels of frequency characteristic filter (-5 to -9 dB/oct.); which augmented the bass in response to car interior noise; were used. The evaluation terms were 12 pairs of words related to sound quality; comfort; added value; and safety. Higher evaluation scores were given to items of palatability and safety in the vicinity of the -6 dB/oct. filter level; which augmented the bass to a level slightly below the frequency characteristic curve of the car interior noise (?-7dB/oct.); and to items of sound quality and added value at the -9 dB/oct. filter level. Factor analysis was also conducted; to identify comfort; sound field; and clarity factors. Based on these factors; the filter results were compared. Higher comfort and clarity factor scores were obtained in the vicinity of the -6 dB/oct. characteristics versus those of other filters. These results confirmed that taking frequency characteristics into account in the performance of a car audio system during travel is effective in improving car interior comfort.

Keywords: Car audio system; comfort; car interior noise; subjective evaluation

KEER2014. Proceedings of the 5th Kanesi Engineering and Emotion Research; International Conference; Linköping; Sweden; June 11-13

Author:
Tomoaki Hidaka, Kyosuke Ochiai, Yamato Makoto, Toshiyuki Kageyama, Hiroshi Hasegawa
Title:
Consideration of the Frequency Characteristics of a Sound System in a Traveling Vehicle
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KEER2014. Proceedings of the 5th Kanesi Engineering and Emotion Research; International Conference; Linköping; Sweden; June 11-13

Author:
Tomoaki Hidaka, Kyosuke Ochiai, Yamato Makoto, Toshiyuki Kageyama, Hiroshi Hasegawa
Title:
Consideration of the Frequency Characteristics of a Sound System in a Traveling Vehicle
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