This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Relationship Between the Physical and the Psychoacoustic Parameters of the Sound Field in an Automobile
Annotation ability available
Sector:
Language:
English
Abstract
A new method of measuring physical factors that prescribe the sound field of the vehicle interior has been used to evaluate the differences in the sound field for 4 types of two-channel loudspeaker systems, which are installed in the front part of the vehicle.
The physical property which prescribes the sound field inside the vehicle is related to the directional properties of the sound, such as lateral, forward and backward component of the early reflection sound energy.
Psychological experiments have also been conducted under the same conditions as that for the physical measurement, and then the correlation between the psychological factor and the physical factor has been examined.
The following conclusions have been reached:
-
(1)
L/M (the ratio of low frequency sound energy vs. medium frequency sound energy) is highly correlated with spatial impression.
-
(2)
F/B (the ratio of forward directional energy vs. backward directional energy) greatly contributes to the preference of the sound quality.
-
(3)
L/R (the ratio of left directional energy vs. right directional energy) is highly correlated with the localization (left and right) of the sound image.
-
(4)
Among the four types of two-channel loudspeaker systems, “mounted in the front doors” has a wide sound image and is more preferable in comparison with the other loudspeaker locations.
Authors
Citation
Tazaki, S., Enami, K., and Yanagisawa, T., "Relationship Between the Physical and the Psychoacoustic Parameters of the Sound Field in an Automobile," SAE Technical Paper 890118, 1989, https://doi.org/10.4271/890118.Also In
References
- Nishi Mikami Tazaki “Physical Characteristics and Psychological Evaluation in the Sound Field of Vehicle Inside” Electrical Acoustic Research Report of Electronic Information and Communication Association (EA87-57) 1987
- Tazaki Nishi “Physical Characteristics and Psychological Characteristics in the Sound Field of Vehicle Inside” The Autumn All Japan Conference of The Japan Acoustic Association (1-6-18) October, 1988
- Damaske P. Ando Y. “Internal Cross Correlation For Multichanell Loudspeaker Reproduction” Acustica 27 232 238 1972
- Barron M. “The Subjective Effects of First Reflections In Concert Halls --- The Need For Leteral Reflections” J.Sound VIB. 15 (4) 475 494 1971
- Kurozumi K. Ohguchi K. “The Relationship Between The Cross correlation Coefficient of Two Channel Acoustic singals and Sound Image Quality.” J.Acoust.Soc.AM 74 (6) December 1983 1726 1733