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Emotional Effect of Car Interior Sounds: Pleasantness and Power and Their Relation to Acoustic Key Features
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English
Abstract
Factor analysis of attributes describing various aspects of car sounds quality reliably shows that the emotional meaning and reinforcing properties of car interior sounds are mainly related to two categories: pleasantness and power. They form the four quadrants of an emotional space with one axis defined by “pleasant - unpleasant” and the other axis defined by “powerful - weak”. Application of these categories to a set of 51 car interior sounds reveals that no sound exists which combines a high amount of pleasantness with an equal amount of power. As a conclusion, a trade off between the technical realization of pleasantness and power is assumed (“trade off hypothesis of pleasantness and power”). It predicts that if the sound of a car is designed to be as pleasant as possible the impression of power might be strongly affected and vice versa. Thus, a compromise between these two effects cannot easily be realized. Analysis of the engine order level envelope (EOLE) of sounds typically representing the four quadrants show that pleasantness is associated with the height of the EOLE in the low frequency range. The impression of power seems to be related to the dynamic of the low frequency EOLE increase. Based on these observations an experiment is performed to pinpoint the trade off between pleasantness and power by manipulating systematically the interior sound of a selected car while driving. The experimental sounds are recorded with dummy head and scaled afterwards in the laboratory according to their pleasantness and power. The results confirm the prediction made by the trade off hypothesis as power can be increased to a certain extent without affecting pleasantness. If this trade off range is exceeded, pleasantness is reduced significantly.
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Authors
Citation
Bisping, R., "Emotional Effect of Car Interior Sounds: Pleasantness and Power and Their Relation to Acoustic Key Features," SAE Technical Paper 951284, 1995, https://doi.org/10.4271/951284.Also In
References
- Bisping, R. Steingrüber, H.-J. Oltmann, M. Wenk, C. 1990 Adult's Tolerance of Cries: an Experimental Investigation of Acoustic Features Child Development 61 1218 1229
- Skinner, B. F. 1938 The Behavior of Organism New York: Appleton Century Crofts
- Bower, G. H. Hilgard, E. R. 1981 Theories of Learning Englewood Cliffs, NJ Prentice Hall
- Molino, J.A. 1974 Measuring Human Aversion to Sound without Verbal Descriptors Perception and Psychophysics 16 303 308
- Gescheider, G. A. 1976 Psychophysics Method and Theory New York John Wiley & Sons
- Torgerson, W. S. 1958 Theory and Methods of Scaling New York John Wiley & Sons
- Kuwano, S. Namba, S. 1985 Continuous Judgement of Level-Fluctuating Sounds and the Relationship between Overall Loudness and Instantaneous Loudness Psychological Research 47 27 37
- Bisping, R. 1991 Psychoacoustic Shaping of Car Indoor Noises Audio Engineering Society 91th AES Convention New York AES
- Bisping, R. 1994 Digital Generation of Acoustical Targets for Car Sound Engineering Based on Psychometrical Data Kuwano, S. Proceedings of the inter-noise 94 Yokohama 869 874