2 research outputs found
Review of active noise control techniques with emphasis on sound quality enhancement
The traditional active noise control design aims to attenuate the energy of residual noise, which is indiscriminative in the frequency domain. However, it is necessary to retain residual noise with a specified spectrum to satisfy the requirements of human perception in some applications. In this paper, the evolution of active noise control and sound quality are briefly discussed. This paper emphasizes on the advancement of active noise control method in the past decades in terms of enhancing the sound quality
A Qualitative Study on the Auditory Experience of Driving Sound in Electric Vehicles Considering User Characteristics and Context of Driving
The auditory experience of driving sound has been studied as an important design factor that improves userβs driving experience and satisfaction in terms of affection. Moreover, it is important as auditory display that provides user with information about context of driving in terms of usability. This study aims to derive user types by considering user characteristics and to evaluate driving sounds according to user types, and to derive needs and ideas by reflecting driving contexts in auditory experience of electric vehicle driving.
Considering characteristics and context of driving in terms of affection and usability, a real driving evaluation for electric vehicle was conducted with 40 participants (29 males and 11 females). All participants performed the experiment for about 1.5 hours, driving 15.6 km, conducting questionnaires for user characteristics, affective evaluation, and Think aloud. After finishing pre-survey about user characteristics and preferred auditory experiences in electric vehicle, they began driving task. They performed affective evaluation for driving sounds while driving at low, medium, and high speeds using affective adjectives. The affective evaluations were conducted after stopping safely at the end of the speed sections. Think aloud method was performed which is the method for participants to express their opinions about auditory experience in real time while driving the electric vehicle.
Three user characteristics were derived by factor analysis on pre-survey, and two user types were derived according to user characteristics by performing cluster analysis based on characteristics. There are 4 of properties for auditory affection that were derived from exploratory factor analysis. The Mann-Whitney U test showed statistically significant differences between the two types of user in the affective properties expected or preferred for electric vehicles (p<.05). The Friedman test and Mann-Whitney U test were conducted to determine whether the two types of auditory experience differed with user types and driving speed, and there was a significant difference with driving speed only for one property (p<.05). As a result of conducting network analysis and CONCOR analysis for the result of Think aloud, the key issues and user needs were identified by user types and examples of design strategies were provided. The result of this study may be applied in designing more detailed and effective auditory experience in electric vehicle.μλμ°¨μ μ£Όν μ²κ° κ²½νμ κ°μ± μΈ‘λ©΄μμ μ¬μ©μμ μ£Όν κ²½νκ³Ό λ§μ‘±κ°μ ν₯μμν€λ μ€μν μ€κ³ μμλ‘ μ°κ΅¬λκ³ μλ€. λν, μ¬μ©μ± μΈ‘λ©΄μμ μ¬μ©μμκ² μ£Όν λ§₯λ½μ λν μ 보λ₯Ό μ 곡νλ μ²κ°μ λμ€νλ μ΄(display)λ‘μ λ§€μ° μ€μνλ€. λ³Έ μ°κ΅¬λ μ κΈ° μλμ°¨μ μ£Όν μ²κ° κ²½νμμ μ¬μ©μ μ±ν₯μ κ³ λ €νμ¬ μ¬μ©μ μ νμ λμΆνκ³ , μ£Όν λ§₯λ½μ λ°μνμ¬ μ¬μ©μ μ νμ λ°λ₯Έ μ£Όνμμ λν νκ°μ λμ¦ λ° μμ΄λμ΄λ₯Ό λμΆνλ κ²μ λͺ©μ μΌλ‘ μνλμλ€.
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Abstract 115μ