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dc.contributor.authorHu Jwu-Shengen_US
dc.contributor.authorLee Ming-Tangen_US
dc.date.accessioned2014-12-16T06:13:52Z-
dc.date.available2014-12-16T06:13:52Z-
dc.date.issued2014-04-29en_US
dc.identifier.govdocH04B015/00zh_TW
dc.identifier.urihttp://hdl.handle.net/11536/104388-
dc.description.abstractThe present invention provides a spatially pre-processed target-to-jammer ratio weighted filter and a method thereof, which uses two microphones to receive audio signals. The audio signals are divided into a plurality of sinusoidal waves by a fast Fourier transform (FFT) module, and a beamformer uses the sinusoidal waves to generate beamformed signals. A reference generator generates at least one reference signal. The beamformed signals and reference signals are used to work out power spectral densities (PSD), and a target-to-jammer ratio (TJR) is worked out with the power spectral densities. TJR is used to determine whether a sound source exists. According to the determination result, a noise estimator is switched to eliminate noise from the beamformed signals and generate output signals. An inverse fast Fourier transform (IFFT) module recombines the output signals and then outputs the recombined signals.zh_TW
dc.language.isozh_TWen_US
dc.titleSpatially pre-processed target-to-jammer ratio weighted filter and method thereofzh_TW
dc.typePatentsen_US
dc.citation.patentcountryUSAzh_TW
dc.citation.patentnumber08712075zh_TW
Appears in Collections:Patents


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