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US 10,101,242 B2Granted
Apparatus and method for measuring noise
AssigneesHyundai Motor Company, Sm Instruments Co., Ltd.
InventorsKyoung Sil Lim, Tae-Woong Lee, Young-Key Kim
Life of this patent
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Abstract
An apparatus for measuring noise includes: a signal generator configured to input an input signal having an excitation frequency to an audio device; and a controller configured to measure rattle noise from a sound pressure signal generated in response to the input signal. 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.
Claims14
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, and
- wherein 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.
2 more elements
A method for measuring noise, the method comprising steps of:
- inputting, by a signal generator, an input signal, which has an excitation frequency, into an audio device;
- and
- measuring, by a controller, a rattle noise from a sound pressure signal generated in response to the input signal,
- wherein the measuring the rattle noise includes:
- performing Fourier Transform on the sound pressure signal to confirm the excitation frequency;
- obtaining a masking curve corresponding to the excitation frequency;
- and
- measuring the rattle noise by using a value exceeding the obtained masking curve, among frequency components of the sound pressure signal.
5 more elements
Dependencies are inferred from the claim text.