NOISE CONTROL DEVICE AND METHOD
First Claim
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1. A noise control device, comprising:
- a noise detecting part configured and arranged to detect a noise generated from a noise source;
a stimulus source control part configured to output a stimulus source control signal according to a frequency of the noise;
a stimulus source providing part configured to provide a stimulus source based on the stimulus source control signal; and
a sound absorptivity variable member configured to change sound absorptivity against the noise in response to receiving the stimulus source.
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Abstract
A noise control device and method effectively reduce noise throughout a broad frequency band. A noise detecting part can detect the noise from a noise source. A stimulus source control signal is output according to a frequency of the noise detected. A stimulus source is provided based on the stimulus source control signal. A sound absorptivity variable member changes sound absorptivity against the noise responsive to the stimulus source.
33 Citations
16 Claims
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1. A noise control device, comprising:
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a noise detecting part configured and arranged to detect a noise generated from a noise source;
a stimulus source control part configured to output a stimulus source control signal according to a frequency of the noise;
a stimulus source providing part configured to provide a stimulus source based on the stimulus source control signal; and
a sound absorptivity variable member configured to change sound absorptivity against the noise in response to receiving the stimulus source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A noise control method, comprising:
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detecting a noise generated from a noise source;
outputting a stimulus source control signal according to a frequency of the noise; and
providing a stimulus source based on the stimulus source control signal to a sound absorptivity variable member configured to change sound absorptivity against the noise in response to receiving the stimulus source. - View Dependent Claims (13, 14, 15, 16)
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Specification