PURPOSE: To provide an active silencer and an electronic equipment which can improve silence effect in a ventilation path having a comparatively short length and a large area.
CONSTITUTION: Since this device is constituted so that a sound wave generated in a noise source is propagated through plural sound wave propagation paths 12a-12n formed in parallel in an exhausting section 20, actuators 14a-14n and silence error sensors 13a-13n which generate an added sound wave for silence are provided in each sound wave propagation path and a sound wave propagating in the sound wave propagation path are actively silenced, the silence error sensor can accurately detect a silence error in each sound wave propagation path. Also, since an adaptive control signal processing section 1 can accurately control an actuator in each sound wave propagation path, high silence effect can be obtained.
SHIMOIDE SHINICHI
IWASE KOJI
SEKIGUCHI OSAMU
WATABE MASANORI
OGURO TAKAHIRO
TSUKAGUCHI TAMOTSU
KOIZUMI SHIGERU
