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Background Noise Measurement from a Repeated Stimulus Measurement System

  • US 20160373873A1
  • Filed: 06/22/2015
  • Published: 12/22/2016
  • Est. Priority Date: 06/22/2015
  • Status: Active Grant
First Claim
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1. A method for providing an adequate signal level in the presence of noise, comprising:

  • providing a stimulus signal to a system including a transducer;

    converting the stimulus signal to at least one electro mechanical transducer signal;

    transducing the at least one electro mechanical transducer signal by the transducer to produce a physical output in an environment including background noise;

    receiving the physical output and background noise by a second transducer;

    recording the received physical output and background noise;

    repeating the first four steps several times;

    averaging the recordings;

    subtracting the average from each recording to obtain a noise measurement for each recording;

    determining a Signal to Noise Ratio (SNR) of system using the noise measurement;

    determining if the SNR is sufficient to ensure accuracy of the physical output produced by the system;

    improve the SNR of the system from the stimulus signal input to the transducer if necessary to provide a sufficiently accurate physical signal;

    processing the sufficiently accurate physical signal recording to determine changes to the system which will provide improved physical outputs of the system;

    implementing the changes in the system; and

    processing input signals by the system to produce improved physical outputs.

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