Invention Application
US20110206213A1 ACTIVE TYPE ACOUSTIC CONTROL SYSTEM 失效
主动式声控系统

ACTIVE TYPE ACOUSTIC CONTROL SYSTEM
Abstract:
In an acoustic control system an operation range of an active type noise control device (an ANC device) and an operation range of an active type effect sound control device (an ASC device) are exchanged in accordance with the number of working cylinders of an engine.
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