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- W2744611982 abstract "The property of a short expansion in a rectangular duct is examined for confirming its performance as a resonator muffler. The expansion consists of two narrow rectangular branches symmetrically located on two opposite sides of the duct. In this paper, the performance of two expansions of the same sizes each other located in series is studied experimentally. For changing the distance between two expansions, the resonant frequency of them is not changed but the sound attenuation effect is greatly changed. The optimum distance for the sound attenuation is about 0.4-0.5 times as long as the duct height regardless of the branch depth. This means the optimum distance does not depend on the frequency that strongly depends on the branch depth." @default.
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- W2744611982 date "2005-01-01" @default.
- W2744611982 modified "2023-09-26" @default.
- W2744611982 title "3824 Sound Attenuation Using Slit-Like Short Expansions Located In Series In Rectangular Duet : Optimum Distance Between Two Expansions" @default.
- W2744611982 doi "https://doi.org/10.1299/jsmemecjo.2005.7.0_213" @default.
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