Panasonic Corporation

Yin-Shan Chen

Che-Ming Lin

Chia-Shin Yen

Chien-Ming Wu

A method and an apparatus for automatic noise compensation used with audio reproduction equipment are provided. The method comprises: (a) collecting a plurality of mixed audio signals, each mixed audio signal including equipment sound output by the audio reproduction equipment, and background noise; (b) removing the equipment sound from the mixed audio signals to obtain the background noise therein; (c) determining whether or not a plurality of mixed audio signals under inspection include a significant sound; and (d) adjusting the volume of the audio reproduction equipment according to whether or not a significant sound has been generated in the surrounding area and the magnitude of the background noise in the mixed audio signals under inspection to satisfy a plurality of predetermined compensation conditions.

Method and apparatus for automatic noise compensation used with audio reproduction equipment

A method and system for detecting wind noise are adapted to determine whether two of a plurality of sound signals acquired by a plurality of sound receiving units include wind noise. The method includes the following steps: (a) transforming the two sound signals to their corresponding digitized sound signals including a plurality of sound frames; (b) calculating a correlation coefficient of each pair of the corresponding sound frames from the two digitized sound signals; (c) subtracting one of the digitized sound signals from the other, and transforming the resultant digitized sound signal to frequency domain; (d) selecting a frequency bin in 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 (e) 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 affirmative.

Growing community of inventors

Tainan County, China

Yin-Shan Chen