Audio data processing apparatus and method to reduce wind noise
AssigneeSamsung Electronics Co., Ltd.
InventorsJae-ha Park, Hyuck-jae Lee, Yong-choon Cho
Life of this patent
Estimating the term…
Abstract
An audio data processing apparatus and method to reduce wind noise. The apparatus includes a wind noise detecting unit to detect a wind noise section from an input audio signal, and a signal processing unit to reduce a low-frequency band signal of the input audio signal in the detected wind noise section. The apparatus determines whether wind is present and automatically reduces wind noise based on the determined result. Accordingly, the apparatus can effectively reduce wind noise.
Claims24
An audio data processing apparatus comprising:
- a wind noise detecting unit to detect a wind noise section in an input audio signal;
- and
- a signal processing unit to reduce a low-frequency band signal of the input audio signal in the detected wind noise section.
An audio data processing apparatus comprising:
- a first operator to calculate a differential value between a left channel input audio signal and a right channel input audio signal;
- a level adjuster to adjust a level of a low-frequency band signal of the left channel input audio signal and a level of a low-frequency band signal of the right channel input audio signal according to the calculated differential value;
- a second operator to add a high-frequency band signal of the left channel input audio signal to the adjusted low-frequency band signal of the left channel input audio signal;
- and
- a third operator to add a high-frequency band signal of the right channel input audio signal to the adjusted low-frequency band signal of the right channel input audio signal.
An audio data processing apparatus comprising:
- a first input channel to input a first audio input signal;
- a second input channel to input a second audio input signal;
- a level detecting unit to detect a level of wind noise in the first and second audio input signals by comparing the first and second audio input signals;
- and
- a signal processing unit to process the first and second audio input signals based on the detected level of the wind noise to reduce the wind noise in the first and second audio input signals.
An audio data processing method comprising:
- detecting a wind noise section in an input audio signal;
- and
- reducing a low-frequency band signal of the input audio signal in the detected wind noise section.
An audio data processing method comprising:
- calculating a differential value between a left channel input audio signal and a right channel input audio signal;
- adjusting a level of a low-frequency band signal of the left channel input audio signal and a level of a low-frequency band signal of the right channel input audio signal according to the calculated differential value;
- adding a high-frequency band signal of the left channel input audio signal to the adjusted low-frequency band signal of the left channel input audio signal;
- and
- adding a high-frequency band signal of the right channel input audio signal to the adjusted low-frequency band signal of the right channel input audio signal.
A computer readable recording medium having executable codes to perform an audio data processing method, the method comprising:
- detecting a wind noise section in an input audio signal;
- and
- reducing a low-frequency band signal of the input audio signal in the detected wind noise section.
A computer readable recording medium having executable codes to perform an audio data processing method, the method comprising:
- calculating a differential value between a left channel input audio signal and a right channel input audio signal;
- adjusting a level of a low-frequency band signal of the left channel input audio signal and a level of a low-frequency band signal of the right channel input audio signal according to the calculated differential value;
- adding a high-frequency band signal of the left channel input audio signal to the adjusted low-frequency band signal of the left channel input audio signal;
- and
- adding a high-frequency band signal of the right channel input audio signal to the adjusted low-frequency band signal of the right channel input audio signal.
Dependencies are inferred from the claim text.