Noise control apparatus
OwnerIsao Kakuhari, Kenichi Terai +1inventors
InventorsIsao Kakuhari, Kenichi Terai, Ko Mizuno
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Abstract
A noise reduction apparatus for reducing noise propagated toward a space 5 on one side of a wall 4 from an external noise source on the other side of the wall 4. The noise reduction apparatus includes a control sound source 1, an error detector 2, and a control section 3. The control sound source 1 is placed on the wall 4 so as to block a noise propagation path. Also, the control sound source radiates a sound into the space 5. The error detector 2 detects the sound propagated from the noise source through the control sound source 1. The control section 3 causes the control sound source 1 to radiate a sound so as to minimize the sound to be detected by the error detector 2 based on the detection results of the error detector 2.
Claims14
A noise reduction apparatus for reducing noise propagated toward a predetermined space on one side of a wall from an external noise source on another side of the wall, comprising:
- a control sound source, which is placed on the wall so as to block a noise propagation path, for radiating a sound into the predetermined space;
- a sound detector for detecting a sound propagated from the noise source through the control sound source;
- and
- a control section for causing the control sound source to radiate a sound so as to minimize a sound to be detected by the sound detector, based on results detected by the sound detector.
Dependencies are inferred from the claim text.