Micro computer, has active control system with multiple active control units for returning sound produced by ventilator and hard disk of micro computer in opposition to phase towards sound source

摘要

The computer has an active control system with multiple active control units in a case. The active control system returns the sound produced by a ventilator and a hard disk of the micro computer in opposition to a phase towards a sound source. A microprocessor (2) assures processing of an acoustic signal into an electrical signal. The active control system verifies the sound emitted by components of the microcomputer.