Browse > Article
http://dx.doi.org/10.5916/jkosme.2014.38.9.1125

A study on digital sound reception systems for ships  

Kim, Hyungjong (ASRI, Department of Electrical and Computer Engineering, Seoul National University)
Kim, Jeongchang (Department of Electronics and Communications Engineering, Korea Maritime and Ocean University)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.38, no.9, 2014 , pp. 1125-1130 More about this Journal
Abstract
In this paper, we propose a sound reception system against surrounding noise for ships based on digital signal processing technologies. In order to suppress unwanted surrounding noises, a digital band-pass filter is designed, which the pass-band of the filter is between 70Hz to 820Hz. Also, we develope a sound direction indicating algorithm with 4 microphones. After filtering the audio signals from 4 microphones, the developed sound direction indicating algorithm can indicate 8 directions. In addition, we implement prototype board for the sound reception using a digital signal processor chip and audio codecs, and verify the proposed algorithm.
Keywords
Digital signal processing; direction indication; ship; sound reception system;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 J. W. Choi and K. J. Kim, "A new sound reception system using a symmetrical microphone array and its numerical simulation," Journal of Ship & Ocean Technology, vol. 8, no. 3, pp. 18-25, 2004.
2 SOLAS chapter V safety of navigation - Regulation 19 -Carriage requirements for shipborne navigational systems and equipment, https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/343175/solas_v_on_safety_of_navigation.pdf, Accessed July1, 2002.
3 IMO resolution MSC.86(70) - Adoption of new and amended performance standards for navigational equipment, http://www.imo.org/blast/blastDataHelper.asp?data_id=15454&filename=86(70).pdf, Accessed Dec. 8, 1998.
4 ISO 14859 - Ships and marine technology - Sound reception systems, https://www.iso.org/obp/ui/#iso:std:iso:14859:ed-1:v1:en, Accessed April 1, 2012.