Computational acoustic vision by solving phase ambiguity confusion
スポンサーリンク
概要
- 論文の詳細を見る
Computational acoustic vision by solving phase ambiguity confusion (CAVSPAC) is proposed for two-dimensional colorful imaging such as pointillisme in the broadband sound environment. The 2D distributions of equivalent point sources were identified as an image from the cross-power spectral phases of sound pressure measured by two pairs of microphones. Each point source was assigned a color corresponding to its frequency. Multiple source locations are introduced from one cross-spectral phase value because of “phase ambiguity” at high frequencies, when the microphone interval is wider than the sound wavelengths. The true source location was extracted from multiple source locations as being the frequency independent. The broadband noise source was visualized with a single two-way loudspeaker set at various positions in the reverberative room. Using CAVSPAC, the 2D image could be identified for the broadband sound source from all directions spherically, except in the area just beside, above and under the microphones. The moderate wider microphone interval than the sound wavelengths led to a better resolution at the source image.
- 社団法人 日本音響学会の論文
- 2009-05-01
著者
-
Yamazaki Ken
Department Of Electrical And Electronic Engineering College Of Industrial Technology Nihon Universit
-
SHIMOYAMA Ryuichi
Department of Electrical and Electronic Engineering, College of Industrial Technology, Nihon Univers
-
Yamazaki Ken
Department Of Biology School Of Education Waseda University
-
Shimoyama Ryuichi
Department Of Electrical And Electronic Engineering College Of Industrial Technology Nihon Universit
-
Shimoyama Ryuichi
Department of Electric and Electronic Engineering, College of Industrial Technology, Nihon University
関連論文
- Genome-wide array-based comparative genomic hybridization analysis of pancreatic adenocarcinoma : Identification of genetic indicators that predict patient outcome
- Overexpression of leucine-rich repeat-containing G protein-coupled receptor 5 in colorectal cancer
- Establishment of an ovarian metastasis model and possible involvement of E-cadherin down-regulation in the metastasis
- Sacroiliac Joint Pressure Method and Pavlik Harness Method for the Limitation of the Hip Abduction
- A Biomechanical Assessment of Infra-Laminar Hooks as an Alternative to Supra-Laminar Hooks in Thoracolumbar Fixation
- Two Types of Na^+/K^+-ATPase Alpha Subunit Gene Transcript in Embryos of the Sea Urchin, Hemicentrotus pulcherrimus
- Species-dependent migration of fish hatching gland cells that commonly express astacin-like proteases in common
- cDNA Cloning of Na^+, K^+-ATPase α-Subunit from Embryos of the Sea Urchin, Hemicentrotus pulcherrimus
- Behavior of Na^+/K^+-ATPase α-subunit alleles in sea urchin eggs upon fertilization
- Computational acoustic vision by solving phase ambiguity confusion
- Multiple acoustic source localization using ambiguous phase differences under reverberative conditions
- Acoustic source localization usieg phase differemce spectrum images