کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
754925 895903 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Partial field decomposition of multi-source cyclostationary sound field
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Partial field decomposition of multi-source cyclostationary sound field
چکیده انگلیسی
The cyclostationary sound field is a kind of special non-stationary field which has obvious modulation phenomena. Conventional planar near-field acoustic holography (PNAH) technique cannot exactly reflect its modulation characteristics. If the cyclic spectral density (CSD) instead of the complex sound pressure is adopted as the reconstruction variable, the modulating wave and carrier wave components of the cyclostationary sound field can be extracted effectively. A new technique called cyclostationary PNAH utilizing the CSD is proposed in this paper. Based on this technique, the problem of partial field decomposition by singular value decomposition (SVD) of multiple incoherent cyclostationary sound sources is researched. The results of numerical simulation and experiments show that the CPNAH technique and SVD decomposition method are effective.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Acoustics - Volume 73, Issue 5, May 2012, Pages 524-528
نویسندگان
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