Sk Telecom Company, Ltd.

Snu Rdb Foundation

Dong Keon Kim

Min Seok Kim

Jae Hwang Yu

Nam Soo Kim

Keun Hwan Choi

Moon Kee Kim

Hwan Sik Yun

Ki Ho Cho

Provided is a synchronization system and method for acoustic communication in audible frequency range, and an apparatus applied thereto. The synchronization system for acoustic communication in audible frequency range is configured to prevent deterioration of a synchronization performance and to reduce an amount of calculation by calculating a correlation based on a few samples as opposed to calculating a correlation for each sample when a receiver of the acoustic communication performs synchronization while the acoustic communication is performed in the audible frequency range through modification of an audio signal or adding of a predetermined signal to an audio signal.

Synchronization system and method for transmission and reception in audible frequency range-based sound communication, and apparatus applied thereto

Provided is a data reception error reduction system and method in acoustic communication in audible frequency range, and an apparatus applied thereto. The data reception error reduction system in the acoustic communication in audible frequency range may be configured to reduce a data reception error in a receiver by taking into consideration that a sound signal is noisy and is significantly affected by a change in the ambient environment when the acoustic communication is performed in the audio frequency band through modification of an audio signal or adding of a predetermined signal to an audio signal. Accordingly, the data reception error may be reduced in the receiver even in an environment where a sound signal is noisy and is significantly affected by a change in the ambient environment, and reliability of data transmission may increase.

System and method for reducing data reception error in acoustic communication in audible frequency range, and apparatus applied thereto

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Seoul, South Korea

Dong Keon Kim