• 제목/요약/키워드: Operating Sound

검색결과 195건 처리시간 0.028초

고급 차량음의 지역별 개인별 선호 음질에 관한 연구 (A Study on Regional and Individual Preference Sound Quality for Luxury Vehicle)

  • 김성현;박동철;홍석관
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2012년도 추계학술대회 논문집
    • /
    • pp.364-369
    • /
    • 2012
  • The vehicle sound classified into driving sound due to power-train, operating sound due to electric motor like sunroof, door lock and electronic sound. These vehicle sound has various features depend on the characteristic of sound that user required. And it based on cultural and regional difference of user. In this study, the user required vehicle sound characteristics for luxury sedan was investigated in overall viewpoint. And virtual target sound was developed through the result of user preference investigation. Next, Jury test was carried out in Germany, USA and Korea for evaluating the target sound. And the regional and individual difference of preference was analyzed through the result of jury test. This result of research will be contributed to design of vehicle sound quality and target sound setting.

  • PDF

자동차 도어랫치의 음질 지수 개발 및 단품 개선을 통한 음질 향상 연구 (A Study on Developing Sound Quality Index of Car Door Latch and Improving Sound Quality by Changing Door Latch Assembly Design)

  • 조현호;성원찬;김성현;박동철;강연준
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2013년도 추계학술대회 논문집
    • /
    • pp.519-524
    • /
    • 2013
  • The purpose of this study is that developing the index which evaluate sound quality of door latch and improving its sound quality through that results. For that, various operating sound of door latch was used for jury test. Loudness and sharpness related metrics are dominant in sound quality index we developed. This research investigate the main transfer path of its operating sound through sound field visualization and get conclusion that could reduce the impact sound of door latch. Therefore, we could verify sound quality improvement of modified product by using sound quality index.

  • PDF

차량용 파워 시트 작동음의 감성 어휘 추출 및 주관적 음질 평가에 관한 연구 (A Study on the Emotional Adjective Extraction and Subjective Evaluation of Sound Quality for Vehicle Power Seat)

  • 김성육;장주광;지효성;김옥환;김기선
    • 한국기계가공학회지
    • /
    • 제18권2호
    • /
    • pp.29-37
    • /
    • 2019
  • In this study, emotional adjectives about the operating sound quality of the vehicle power seat are constructed, and the effectiveness of the emotional adjectives are verified by evaluating the operating sound quality. First, emotional adjectives were collected from the literature related to the automobile field and other sound qualities. A questionnaire was made using these adjectives. The questionnaire was designed to be able to select all adjectives that could express the operating noise of the power seat slide adjuster by applying the multiple- response method. Next, a subjective sound quality evaluation was conducted using the emotional adjectives. In the evaluation, we first recorded the operating noise for two power seats. Second, the subjective sound quality evaluation was performed on the recorded operating noise using a loudspeaker. Finally, through a statistical analysis on the sound quality evaluation results, the relationship between the semantic space and the preference score was verified, and the validity of the emotional adjectives was verified.

마스킹 효과를 이용한 선셰이드 모터음의 최소가청치 특성에 관한 연구 (A Study on Threshold of Hearing of Sun shade Motor Sound Using Masking Effect)

  • 조현호;성원찬;김성현;박동철;강연준
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2013년도 춘계학술대회 논문집
    • /
    • pp.116-121
    • /
    • 2013
  • Panaroma Sun roof's sun shade motor elicits two major sounds when operating: the tonal sound and the white noises. Generally, the sound related to the sharpness contributes the most to the quality of motors' tonal sound. The primary purpose of this study was to set the loudness of the motor's objective tonal sound utilizing the masking effect by its white noises. To conduct this study, the sound made by the operating sun shade motor was categorized into two different subsets of masker and test tone to examine the masking threshold. Also, the shifts of masking threshold were observed with the varying masker loudness.

  • PDF

자동차 도어 랫치의 음질 지수 개발 및 단품 개선을 통한 음질 향상 연구 (A Study on Developing Sound Quality Index of Car Door Latch and Improving Sound Quality by Changing Door Latch Assembly Design)

  • 조현호;성원찬;김성현;박동철;강연준
    • 한국소음진동공학회논문집
    • /
    • 제25권9호
    • /
    • pp.614-619
    • /
    • 2015
  • The purpose of this study is that developing the index which evaluate sound quality of door latch and improving its sound quality through that results. For that, various operating sound of door latch was used for jury test. Loudness and sharpness related metrics are dominant in sound quality index we developed. This research investigate the main transfer path of its operating sound through sound field visualization and get conclusion that could reduce the impact sound of door latch. Therefore, we could verify sound quality improvement of modified product by using sound quality index.

프린터 음질평가를 위한 순음도 설계 (Tonality Design for Sound Quality Evaluation in Printer)

  • 김의열;이영준;이상권
    • 한국소음진동공학회논문집
    • /
    • 제22권4호
    • /
    • pp.318-327
    • /
    • 2012
  • The operating sound radiated from a laser printer includes tonal noise components caused by the rotating mechanical parts such as gear, shaft, motor, fan, etc. The negative effects of the tonal noise components need to be considered in the process of developing a sound quality index for the quantitative evaluation of the emotional satisfaction in terms of psycho-acoustics. However, in a previous paper, it was confirmed that the Aures tonality did not have enough correlation with the results of jury evaluation. The sound quality index based on loudness, articulation index, fluctuation strength has a little problem in considering the effects of rotating mechanical parts on the sound quality. In this paper, to solve the tonality evaluation problem, the calculation algorithm of Aures tonality was investigated in detail to find the cause of decreasing the correlation. The new tonality evaluation model was proposed by modifying and optimizing the masking effect, loudness ratio, and shape of weighting curve based on the basic algorithm of Aures tonality, and applied to two kinds of operating sound groups in order to verify the usefulness of proposed model. As a result, it is confirmed that the proposed tonality evaluation model has enough correlation and usefulness for expressing the tonalness in the operating sounds of laser printers. In the following paper, this results will be used to model the sound quality index as the input data by using the classification algorithm.

차량용 전동 롤러 블라인드의 음질지수 개발 (Sound Quality Index Development of Electrically Powered Vehicle Roller Blind)

  • 성원찬;조현호;김성현;박동철;강연준
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2014년도 추계학술대회 논문집
    • /
    • pp.785-790
    • /
    • 2014
  • The purpose of this study is to identify the significant sound quality metric and compose the sound quality index of motor driven roller blind which is part of vehicle sunroof. Before subjective evaluation, sound characteristics of roller blind was analyzed and set the target operating sound for subjective evaluation. Thus, transfer sound of roller blind which has the characteristics of sound modulation was used for subjective evaluation. Linear regression was carried out by chosen Zwicker's metrics which are pointed by comments of jurors. Loudness and sharpness related metrics are prime metrics in sound quality index we composed. Effect of roller blind assay when it is attached to real vehicle was identified to evaluate the validity of index.

  • PDF

Acoustic Power Control of a Lightly-Damped Enclosed Sound Field

  • Kim, Woo-Young;Kim, Dong-Kyu;Hwang, Won-Gul
    • International Journal of Aeronautical and Space Sciences
    • /
    • 제2권2호
    • /
    • pp.19-27
    • /
    • 2001
  • This research attempts to find an active control strategy which reduces acoustic power and acoustic energy in lightly-damped enclosed sound field such as a vehicle compartment or an operating room of heavy industrial machinery. An active control strategy, which takes into consideration of the acoustic radiation power of the source as a cost function, is formulated and examined to find capability of reducing noise. An adaptive filtering algorithm for sound power control is suggested and implemented to control lightly-damped sound field. To verify the method, sound power based active noise control algorithm was implemented on a rectangular box with lightly-damped wall, and popular acoustic energy based control with modal coupling reduction was performed to compare the noise reduction performance. It was shown that a total sound power based strategy provides a practical mean for global noise reduction for lightly damped sound field.

  • PDF

굴림 베어링 요소의 결함 검출시 음향 인텐시티기술적용에 관한 실험적 연구 (An Experimental Study of the Application of the Sound-Intensity Technique on the Detection of Defect in Rolling Bearings)

  • 차경옥
    • Journal of Advanced Marine Engineering and Technology
    • /
    • 제23권4호
    • /
    • pp.473-479
    • /
    • 1999
  • The two-microphone sound-intensity technique has been used for the detection of defects in ra-ally loaded ball bearings. The difference in the sound-intensity levels measured for bearings with no defect and for those with intentionally introduced defects of different sizes n heir elements under various operating conditions of loads and speeds is demonstrated. The results show that of an inner-race or ball defect. It is difficult to detect defects at lower speeds. Sound-pressure measurements were also performed for comparison and it shown that the detectability of defects by sound-intensity measurements is better than that by sound-pressure measurements.

  • PDF

LCD 라인의 음향 특성신호에 웨이브렛 변환과 인경신경망회로를 적용한 공정로봇의 건정성 감시 연구 (Condition Monitoring of an LCD Glass Transfer Robot Based on Wavelet Packet Transform and Artificial Neural Network for Abnormal Sound)

  • 김의열;이상권;장지욱
    • 대한기계학회논문집A
    • /
    • 제36권7호
    • /
    • pp.813-822
    • /
    • 2012
  • LCD 생산라인의 공정 로봇에서 방사되는 비정상 작동 소음은 로봇의 결함 탐지에 사용된다. 이 신호의 장점은 상대적으로 낮은 민감도에 비해 단지 마이크로폰을 이용하여 다수의 결함을 확인할 수 있는 것이다. 결함요소 추출을 위한 웨이브렛 변환(WPT)과 불량의 분류를 위한 인공신경망 회로(ANN)이 본 논문에서 사용되었다. 결과적으로, 비정상 작동 소음이 기계요소의 결함 진단에 효율적으로 사용될 수 있다.