Remote communication and control of acoustic detectors
First Claim
1. A control system for controlling a function of an acoustic detector, comprising:
- a memory that stores a reference power spectrum of a reference acoustic signal, the reference power spectrum being associated with a mode of operation of the acoustic detector;
a receiver including an analog signal conditioning circuit that receives an acoustic sound signal, the acoustic signal includes a tone and harmonic tones, wherein the receiver generates a real-time acoustic power spectrum in response to the receiving of the acoustic sound signal; and
a detector that performs the mode of operation when a comparison of the real-time acoustic power spectrum with the reference power spectrum indicates that the acoustic sound signal is a control signal;
wherein comparing the real-time acoustic power spectrum with the reference power spectrum includes normalizing each of the real-time acoustic power spectrum and the reference power spectrum and calculating a normalized mean squared error between the normalized real-time acoustic power spectrum and the normalized reference power spectrum and comparing the normalized mean squared error to a threshold to indicate that the acoustic sound signal is the control signal.
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Accused Products
Abstract
A method of controlling a function of an acoustic detector includes storing a reference power spectrum of a reference acoustic signal, the reference power spectrum being associated with a mode of operation of the acoustic detector; receiving an acoustic sound signal, the acoustic sound signal including a tone and harmonic tones; generating a real-time acoustic power spectrum of the acoustic sound signal responsive to the receiving of the acoustic sound signal; and performing the mode of operation when a comparison of the real-time acoustic power spectrum with the reference acoustic power spectrum indicates that the acoustic sound signal is a control signal.
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Citations
16 Claims
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1. A control system for controlling a function of an acoustic detector, comprising:
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a memory that stores a reference power spectrum of a reference acoustic signal, the reference power spectrum being associated with a mode of operation of the acoustic detector; a receiver including an analog signal conditioning circuit that receives an acoustic sound signal, the acoustic signal includes a tone and harmonic tones, wherein the receiver generates a real-time acoustic power spectrum in response to the receiving of the acoustic sound signal; and a detector that performs the mode of operation when a comparison of the real-time acoustic power spectrum with the reference power spectrum indicates that the acoustic sound signal is a control signal; wherein comparing the real-time acoustic power spectrum with the reference power spectrum includes normalizing each of the real-time acoustic power spectrum and the reference power spectrum and calculating a normalized mean squared error between the normalized real-time acoustic power spectrum and the normalized reference power spectrum and comparing the normalized mean squared error to a threshold to indicate that the acoustic sound signal is the control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling a function of an acoustic detector, comprising:
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storing a reference power spectrum of a reference acoustic signal, the reference power spectrum being associated with a mode of operation of the acoustic detector; receiving an acoustic sound signal, the acoustic sound signal including a tone and harmonic tones; generating a real-time acoustic power spectrum of the acoustic sound signal responsive to the receiving of the acoustic sound signal; and performing the mode of operation when a comparison of the real-time acoustic power spectrum with the reference power spectrum indicates that the acoustic sound signal is a control signal; wherein comparing the real-time acoustic power spectrum with the reference power spectrum includes normalizing each of the real-time acoustic power spectrum and the reference power spectrum and calculating a normalized mean squared error between the normalized real-time acoustic power spectrum and the normalized reference power spectrum and comparing the normalized mean squared error to a threshold to indicate that the acoustic sound signal is the control signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification