Invention Application
- Patent Title: NOISE DETECTION AND REDUCTION IN AUDIO DEVICES
- Patent Title (中): 音频设备中的噪声检测和减少
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Application No.: US12980279Application Date: 2010-12-28
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Publication No.: US20120163622A1Publication Date: 2012-06-28
- Inventor: Muralidhar KARTHIK , Samsudin , Evelyn KURNIAWATI , Sapna GEORGE
- Applicant: Muralidhar KARTHIK , Samsudin , Evelyn KURNIAWATI , Sapna GEORGE
- Applicant Address: SG Singapore
- Assignee: STMICROELECTRONICS ASIA PACIFIC PTE LTD
- Current Assignee: STMICROELECTRONICS ASIA PACIFIC PTE LTD
- Current Assignee Address: SG Singapore
- Main IPC: H04B15/00
- IPC: H04B15/00 ; H04R3/00

Abstract:
Methods and apparatuses for detection and reduction of wind noise in audio devices are disclosed. In an embodiment, a method includes acquiring and transforming the audio signals. Correlations from the transformed audio signals are computed. A cross correlation index is compared to a predetermined value to determine if a wind noise spectral content is present. In another embodiment, an apparatus includes an audio processing unit to receive non-decomposed audio signals, and an audio decomposition unit to receive the non-decomposed audio signals and to generate decomposed audio signals. A wind noise spectrum estimation unit receives non-decomposed audio signals and decomposed audio signals and identifies wind noise spectral components in at least one of the non-decomposed and decomposed audio signals. A wind noise spectrum reduction unit receives the wind noise spectral components and removes the wind noise spectral components from at least one of the non-decomposed and the decomposed audio signals.
Information query