System and Method for Providing a Quiet Zone

A system comprising:

• a speaker configured to output a cancellation signal to counteract, at least in part, an unwanted sound;
• and
• a processor configured to generate the cancellation signal, wherein:
• the unwanted sound comprises energy in a predetermined frequency band,
• a source of the unwanted sound is at a distance away from the speaker,
• the distance is at least one fourth of a wavelength of a lowest frequency of the predetermined frequency band, and
• the cancellation signal is generated according to a local audio signal and the energy in the predetermined frequency band of the unwanted sound.

A system comprising:

• a plurality of microphones configured to receive a plurality of unwanted audio signals corresponding to an unwanted sound;
• a speaker configured to output a cancellation signal to counteract, at least in part, the unwanted sound;
• and
• a processor configured to generate the cancellation signal, wherein:
• the unwanted sound comprises energy in a predetermined frequency band,
• a source of the unwanted sound is at a distance away from the speaker,
• the distance is at least one fourth of a wavelength of a lowest frequency of the predetermined frequency band, and
• the cancellation signal is generated according to a local audio signal and the energy in the predetermined frequency band of the unwanted sound.

A system comprising:

• a microphone;
• a speaker;
• and
• processor operable to:
• receive, via the microphone, a unwanted sound, wherein the microphone is positioned at least one fourth of a particular wavelength away from a particular location;
• determine a relationship between a local audio signal, at the particular location, and the unwanted sound;
• and
• generate, according to the local audio signal and the determined relationship, a cancellation signal that, when output by the speaker, will counteract, at least in part, the unwanted sound.