Patent ID: 8065115
Filing Date: 2011-11-22
Classification: H04R

Abstract:
1. A method for detecting wind noise, which is adapted to determine whether two of a plurality of sound signals acquired by a plurality of sound receiving units include wind noise, comprising: transforming, via a sound signal transformer, the two sound signals to their corresponding digitized sound signals including a plurality of sound frames; calculating, via a correlation coefficient calculator, a correlation coefficient of each pair of the corresponding sound frames from the two digitized sound signals; subtracting, via a sound signal separator, one of the two digitized sound signals from another of the two digitized sound signals, and transforming a resultant signal to a frequency domain; selecting, via a spectrum processor, a frequency bin in a frequency domain for each of the sound frames to serve as a frequency boundary, and calculating a dB difference, a low-frequency energy decay factor, and a low-frequency ripple number of each of the sound frames according to the frequency boundary; and determining whether the correlation coefficient, the dB difference, the low-frequency energy decay factor, and the low-frequency ripple number of a respective sound frame comply with a predetermined determination rule, the two sound signals being determined to include wind noise if the determining is affirmative.