시간-스케일필터를 이용한 기적음 도달시간차 측정성능의 개선

• 영문명: Performance Enhancement of Time Delay Measurement of Whistle Sound using Time-Scale Filter
• 발행기관: 한국해양대학교 해사산업연구소
• 저자명: 문성배(Serng-Bae Moon) 채양범(Yang-Bum Chae) 전승환(Seung-Hwan Jun)
• 간행물 정보: 『해사산업연구소논문집』제16집, 43~49쪽, 전체 7쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2005.12.30

영문 초록

  A purpose of developing a sound source tracking system in this paper is to reduce the noise efficiently from the received signal by microphone array and measure the signal"s time delay between the microphones. We have applied the wavelet analysis algorithm to the system and calculated the sound source"s relative position. For the performance evaluation, I have compared with the results of utilizing the digital filtering methods based on the FIR LPF using Kaiser window function and the inverse Chebyshev ⅡR LPF. As a result, I have confirmed the fact that ‘time-scale" filter using inverse discrete wavelet transform was suitable for this system.

목차

Abstract
1. 서론
2. 웨이브렛 변환
3. 디지털필터의 설계
4. 실험 및 평가
5. 결론
참고문헌

키워드

Microphone array Time delay Time-scale filter Kaiser window Inverse Chebyshev filter Inverse discrete wavelet transform