Monaural Sound Localization Based on Structure-Induced Acoustic Resonance
A physical structure such as a cylindrical pipe controls the propagated sound spectrum in a predictable way that can be used to localize the sound source. This paper designs a monaural sound localization system based on multiple pyramidal horns around a single microphone. The acoustic resonance with...
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-02-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/15/2/3872 |
| _version_ | 1798041366928818176 |
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| author | Keonwook Kim Youngwoong Kim |
| author_facet | Keonwook Kim Youngwoong Kim |
| author_sort | Keonwook Kim |
| collection | DOAJ |
| description | A physical structure such as a cylindrical pipe controls the propagated sound spectrum in a predictable way that can be used to localize the sound source. This paper designs a monaural sound localization system based on multiple pyramidal horns around a single microphone. The acoustic resonance within the horn provides a periodicity in the spectral domain known as the fundamental frequency which is inversely proportional to the radial horn length. Once the system accurately estimates the fundamental frequency, the horn length and corresponding angle can be derived by the relationship. The modified Cepstrum algorithm is employed to evaluate the fundamental frequency. In an anechoic chamber, localization experiments over azimuthal configuration show that up to 61% of the proper signal is recognized correctly with 30% misfire. With a speculated detection threshold, the system estimates direction 52% in positive-to-positive and 34% in negative-to-positive decision rate, on average. |
| first_indexed | 2024-04-11T22:20:33Z |
| format | Article |
| id | doaj.art-ed1d305cac84448093a265c8df3b9f13 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T22:20:33Z |
| publishDate | 2015-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-ed1d305cac84448093a265c8df3b9f132022-12-22T04:00:10ZengMDPI AGSensors1424-82202015-02-011523872389510.3390/s150203872s150203872Monaural Sound Localization Based on Structure-Induced Acoustic ResonanceKeonwook Kim0Youngwoong Kim1Division of Electronics & Electrical Engineering, Dongguk University-Seoul, Seoul 100-715, KoreaDivision of Electronics & Electrical Engineering, Dongguk University-Seoul, Seoul 100-715, KoreaA physical structure such as a cylindrical pipe controls the propagated sound spectrum in a predictable way that can be used to localize the sound source. This paper designs a monaural sound localization system based on multiple pyramidal horns around a single microphone. The acoustic resonance within the horn provides a periodicity in the spectral domain known as the fundamental frequency which is inversely proportional to the radial horn length. Once the system accurately estimates the fundamental frequency, the horn length and corresponding angle can be derived by the relationship. The modified Cepstrum algorithm is employed to evaluate the fundamental frequency. In an anechoic chamber, localization experiments over azimuthal configuration show that up to 61% of the proper signal is recognized correctly with 30% misfire. With a speculated detection threshold, the system estimates direction 52% in positive-to-positive and 34% in negative-to-positive decision rate, on average.http://www.mdpi.com/1424-8220/15/2/3872sound localizationangle of arrivalmonaural localizationacoustic resonancepyramidal horncylindrical pipefundamental frequencyCepstrumdiscrete Fourier transformsingle microphone |
| spellingShingle | Keonwook Kim Youngwoong Kim Monaural Sound Localization Based on Structure-Induced Acoustic Resonance Sensors sound localization angle of arrival monaural localization acoustic resonance pyramidal horn cylindrical pipe fundamental frequency Cepstrum discrete Fourier transform single microphone |
| title | Monaural Sound Localization Based on Structure-Induced Acoustic Resonance |
| title_full | Monaural Sound Localization Based on Structure-Induced Acoustic Resonance |
| title_fullStr | Monaural Sound Localization Based on Structure-Induced Acoustic Resonance |
| title_full_unstemmed | Monaural Sound Localization Based on Structure-Induced Acoustic Resonance |
| title_short | Monaural Sound Localization Based on Structure-Induced Acoustic Resonance |
| title_sort | monaural sound localization based on structure induced acoustic resonance |
| topic | sound localization angle of arrival monaural localization acoustic resonance pyramidal horn cylindrical pipe fundamental frequency Cepstrum discrete Fourier transform single microphone |
| url | http://www.mdpi.com/1424-8220/15/2/3872 |
| work_keys_str_mv | AT keonwookkim monauralsoundlocalizationbasedonstructureinducedacousticresonance AT youngwoongkim monauralsoundlocalizationbasedonstructureinducedacousticresonance |