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- W2051782218 abstract "A new microphone system was developed to monitor the human voice near the microphone in a noisy environment. The system is equipped with two special functions in addition to the usual microphone functions: reduction of air blow effects by the mouth and focused reception to a sound source. A wind filter was developed to reduce the air blow effects from the mouth during speaking. This filter is a plate perforated by an array of small holes; the method used to design the filter is also presented. To achieve focused reception, four microphones were used in conjunction with a new signal processing method. The proposed signal processing method effectively increases the directivity in the desired direction. Additionally, it provides the system with focusing on the source since the source is located adjacent to the system. A prototype of the proposed system was fabricated and subjected to performance tests. The results showed that air blow effects can be reduced by up to 20 dB and the directional gain is more than 4 dB. The proposed microphone system shows such good performance that it can be used in mobile phones for whispering communication." @default.
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- W2051782218 date "2004-05-01" @default.
- W2051782218 modified "2023-09-25" @default.
- W2051782218 title "A new microsystem for near whispering" @default.
- W2051782218 doi "https://doi.org/10.1121/1.4809310" @default.
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