Tymphany Acoustic Technology Limited

Hing Lung Sung

Alexey Abdulov

Dmitry Abdulov

The present application discloses a detection method and a detection device for the audio signal, the detection method comprising one or multiple times of audio detection, the audio signal is a SPDIF signal, and each time of the audio detection comprises: a statistical sampling step, sampling the SPDIF signal based on Biphase Mark Code, and counting according to the sampled data to obtain the number of state changes or the number of state unchanges of the SPDIF signal; and a determination step, determining whether the SPDIF signal is a muted SPDIF signal according to whether the number of state changes or the number of state unchanges of the SPDIF signal is within a predetermined range. The purpose of this application is at least to achieve the music detection function of the audio signal without performing full signal decoding on the SPDIF signal.

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Taipei, Taiwan

Hing Lung Sung