A comparative study on subjective feeling of engine acceleration sound by automobile types

Park, Donggun; Park, Sung-Hwan; Kim, Wonjoon; Rhiu, Ilsun; Yun, Myung Hwan

doi:10.1016/j.ergon.2019.102843

Cited by 26 publications

(11 citation statements)

References 30 publications

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“…As Jennings et al ( [27], (p. 1263)) argued, "perception of the sounds of on-road cars is affected by stimuli for other senses (e.g., visual and vibrational), and the fact that an assessor is also concentrating on driving." To illustrate, research in a listening room by Park et al [28] found that loudness was predictive of perceived sportiness (r � 0.84) but negatively predictive of perceived comfort (r � −0.83), consistent with the generally accepted "trade-off hypothesis of pleasantness and power" ( [29] p. 1203). A driving simulator study by Hellier et al [30], however, found that drivers regarded no engine noise at all as uncomfortable.…”

Section: Introductionsupporting

confidence: 53%

Creating the Illusion of Sportiness: Evaluating Modified Throttle Mapping and Artificial Engine Sound for Electric Vehicles

Melman

Visser

Mouton

et al. 2021

Journal of Advanced Transportation

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Modern computerized vehicles offer the possibility of changing vehicle parameters with the aim of creating a novel driving experience, such as an increased feeling of sportiness. For example, electric vehicles can be designed to provide an artificial sound, and the throttle mapping can be adjusted to give drivers the illusion that they are driving a sports vehicle (i.e., without altering the vehicle’s performance envelope). However, a fundamental safety-related question is how drivers perceive and respond to vehicle parameter adjustments. As of today, human-subject research on throttle mapping is unavailable, whereas research on sound enhancement is mostly conducted in listening rooms, which provides no insight into how drivers respond to the auditory cues. This study investigated how perceived sportiness and driving behavior are affected by adjustments in vehicle sound and throttle mapping. Through a within-subject simulator-based experiment, we investigated (1) Modified Throttle Mapping (MTM), (2) Artificial Engine Sound (AES) via a virtually elevated rpm, and (3) MTM and AES combined, relative to (4) a Baseline condition and (5) a Sports car that offered increased engine power. Results showed that, compared to Baseline, AES and MTM-AES increased perceived sportiness and yielded a lower speed variability in curves. Furthermore, MTM and MTM-AES caused higher vehicle acceleration than Baseline during the first second of driving away from a standstill. Mean speed and comfort ratings were unaffected by MTM and AES. The highest sportiness ratings and fastest driving speeds were obtained for the Sports car. In conclusion, the sound enhancement not only increased the perception of sportiness but also improved drivers’ speed control performance, suggesting that sound is used by drivers as functional feedback. The fact that MTM did not affect the mean driving speed indicates that drivers adapted their “gain” to the new throttle mapping and were not susceptible to risk compensation.

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Section: Introductionsupporting

confidence: 53%

Creating the Illusion of Sportiness: Evaluating Modified Throttle Mapping and Artificial Engine Sound for Electric Vehicles

Melman

Visser

Mouton

et al. 2021

Journal of Advanced Transportation

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“…All statistical analyses were conducted using IBM SPSS Statistics Version 24 (IBM Corp., Armonk, NY, United States). With reference to previous studies that measured the subjective feeling of users through a questionnaire [19][20][21][22], all subjective ratings in this study were evaluated using a 7-point Likert scale. To neglect the order effect, the samples were given in a randomized order.…”

Section: Discussionmentioning

confidence: 99%

Understanding the Relationship between User’s Subjective Feeling and the Degree of Side Curvature in Smartphone

et al. 2020

Self Cite

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To develop a flexible display, smartphones with edge screens with curved displays on both sides of the main screen have been used widely. Considering that small differences in the form of smartphones, such as length, width, and thickness, could affect user experience, the effects of the curvature of the edge screen should be identified. This study aimed to investigate the effects of the curvature of edge screens on subjective feelings of smartphone users and to find out the optimal curvature. In the experiment, four nonfunctional samples with different radii of curvature (4R/6R/8R/10R) were used as samples, and participants evaluated the five subjective feelings: grip/control comfort, front/side visibility, and stability of the samples with four usage patterns. Our results revealed that 8R is the optimal curvature for the edge screen based on subjective feelings in smartphone usage. Moreover, the effect of the curvature of the edge screen on grip comfort and control comfort varied according to the usage patterns. The results of this study can be applied to design of the curvature of edge screens in smartphones and it is expected that it will contribute to improvement of users’ satisfaction.

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“…Seven parameters are adopted to reflect the objective performance of fan noise. The objective parameters of the sound samples were calculated with sound analysis software Head ArtemiS, the description and calculation process are introduced in reference, [7][8][9][10][11] and the analysis results under 3000 r/min are shown as an example in Figure 4. The ordinates from left to right and top to bottom are respectively sound pressure (Pa), A-weighted SPL (dB(A)), loudness (sone), sharpness (acum), roughness (asper), fluctuation (vacil), tonality (tu), and Articulation Index (%).…”

Section: Noise Sample Processing and Psychoacoustic Parameters Calcul...mentioning

confidence: 99%

“…The groundwork on the sound quality of products was laid by Zwicker 5 and Fastl 6 based on psychoacoustics. Some parameters were introduced 7–11 including loudness, sharpness, roughness, tonality, etc., to objectively describe the human feeling toward product sounds, which are affected by the inherent characteristics of sound and the physiological and psychological aspects of the evaluators. Sound quality optimization of products has gradually found numerous applications in home supplies, 12,13 the automotive industry 14–16 or architecture appliance industry.…”

Section: Introductionmentioning

confidence: 99%

Modelling and intelligent prediction of sound quality for high-voltage fans on fuel cell vehicles

Guo

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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Since fuel cell vehicles have much higher heat dissipation requirements, 350-V high-voltage fans are adopted instead of traditional 12-V cooling fans, generating more aerodynamic noise. The installed fans are required to possess not only low sound pressure level but also good psychoacoustic performance. This paper is aimed at solving the complex correlation between subjective sound quality evaluation results and objective psychoacoustics parameters and establishing a sound quality prediction model for high-voltage fans. The noise signals of two high-voltage fans operating on a fuel cell vehicle under different running conditions are collected by an artificial head and preprocessed to acquire seven objective parameters. Then the subjective evaluation experiment on the annoyance of the noise samples is carried out based on pair-wise comparison method. A sample group of 23 adults is selected and a graphical user interface is programmed for test guiding. The subjective annoyance scores of the noise signals are obtained after data processing and effectiveness verification. By analyzing the tested results, the correlations between the subjective score and each of the single psychoacoustic parameters are summarized. Two sound quality prediction models are established by multiple linear regression and backpropagation neural network respectively, and the training results of the two methods are verified and compared, proving the reliability of neural network training results. With the established models, the sound quality of the high-voltage fans can be estimated effectively without complex subjective tests, contributing to improving the acoustic performance of fan products.

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A comparative study on subjective feeling of engine acceleration sound by automobile types

Cited by 26 publications

References 30 publications

Creating the Illusion of Sportiness: Evaluating Modified Throttle Mapping and Artificial Engine Sound for Electric Vehicles

Creating the Illusion of Sportiness: Evaluating Modified Throttle Mapping and Artificial Engine Sound for Electric Vehicles

Understanding the Relationship between User’s Subjective Feeling and the Degree of Side Curvature in Smartphone

Modelling and intelligent prediction of sound quality for high-voltage fans on fuel cell vehicles

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