Three-dimension silencer
专利汇可以提供Three-dimension silencer专利检索，专利查询，专利分析的服务。并且PURPOSE:To attain proper silencing by causing an interference sound based on a contribution rate distribution data of noise added with the environment condition. CONSTITUTION:The effect of noise from a noise source 1 with respect to a constant point E subjected to silencing is measured in advance, analyzed as numeral and the result is stored in a memory 11 as a contribution rate distribution data. Based on the data, an interference sound of opposite phase is acted in a region whose sound pressure is increased with respect to the constant point E and an interference sound in phase is acted in a region whose sound pressure is decreased with respect to the constant point E to attain silencing. Then the synchronization of the phase and period of the interference sound with respect to the original noise and the amplitude of the interference sound are implemented based on the signal from a property sensor 9, then the noise quantity is reduced at the constant point E. If the environment condition such as temperature is fluctuated, it is sensed by an environment sensor 10 to drive silencing speakers 2a-2c based on the contribution rate distribution data corresponding to the environment state. Thus, the silencing in response to the environmental condition is attained.，下面是Three-dimension silencer专利的具体信息内容。
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