System and Method for Providing a Quiet Zone
AssigneeSound United, LLC
InventorsBradley M. Starobin, Matthew Lyons, Stuart W. Lumsden, Michael DiTullo
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Abstract
A system and method for quieting unwanted sound. As a non-limiting example, various aspects of this disclosure provide a system and method, for example implemented in a premises-based or home audio system, for quieting unwanted sound at a particular location.
Claims21
1-22. (canceled)
An audio system comprising:
- a microphone;
- a loudspeaker;
- and
- circuitry operable to:
- identify an unwanted sound at a particular location;
- filter the unwanted sound to pass a local audio signal comprising a frequency band of sound to be counteracted, wherein a lower frequency of the frequency band is characterized by a particular wavelength;
- receive, via the microphone, a remote audio signal, wherein the microphone is positioned at least one fourth of the particular wavelength away from the particular location;
- characterize a relationship between the local audio signal and the remote audio signal;
- and
- generate, based at least in part on the local audio signal and the characterized relationship, a cancellation signal that, when output by the loudspeaker, will counteract, at least in part, the unwanted sound.
The audio system of claim 21, wherein a magnitude of the cancellation signal is set 6-10 dB lower than a level determined for an ideal cancellation.
The audio system of claim 21, wherein the circuitry is operable to characterize the relationship between the sound signal and the received sound by, at least in part, utilizing a plurality of microphones where each of the plurality of microphones is positioned at a respective fixed geographical location.
An audio system comprising:
- a plurality of microphones;
- a loudspeaker;
- and
- circuitry operable to:
- identify an unwanted sound at a particular location;
- filter the unwanted sound to pass a local audio signal comprising a frequency band of sound to be counteracted, wherein a lower frequency of the frequency band is characterized by a particular wavelength;
- receive, via the plurality of microphones, a plurality of remote audio signals, wherein each of the plurality of microphone is positioned at least one fourth of the particular wavelength away from the particular location;
- characterize a relationship between the local audio signal and the plurality of remote audio signals;
- and
- generate, based at least in part on the local audio signal and the characterized relationship, a cancellation signal that, when output by the loudspeaker, will counteract, at least in part, the unwanted sound.
An audio system comprising:
- a microphone;
- a loudspeaker;
- and
- circuitry operable to:
- receive, via the microphone, a remote audio signal, wherein the microphone is positioned at least one fourth of a particular wavelength away from a particular location;
- identify an unwanted sound in the remote audio signal;
- filter the remote audio signal to pass a frequency band of sound to be counteracted, wherein a lower frequency of the frequency band is characterized by the particular wavelength;
- characterize a relationship between a local audio signal, at the particular location, and the filtered remote audio signal;
- and
- generate, based at least in part on the local audio signal and the characterized relationship, a cancellation signal that, when output by the loudspeaker, will counteract, at least in part, the unwanted sound.
Dependencies are inferred from the claim text.