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Apparatus and method for measuring noise

  • US 10,101,242 B2
  • Filed: 06/21/2016
  • Issued: 10/16/2018
  • Est. Priority Date: 10/20/2015
  • Status: Active Grant
First Claim
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1. An apparatus for measuring noise, the apparatus comprising:

  • a signal generator configured to input an input signal having an excitation frequency to an audio device; and

    a controller configured to measure a rattle noise from a sound pressure signal generated in response to the input signal,wherein the controller measures the rattle noise by comparing a frequency component of the sound pressure signal with a masking curve corresponding to the excitation frequency, andwherein the controller performs Fourier Transform on the sound pressure signal to confirm the excitation frequency, and measures the rattle noise using a value, among the frequency component of the sound pressure signal, which exceeds the masking curve corresponding to the excitation frequency.

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