Reliable Communications over Acoustic Channels Using Data Hiding and Error Control Techniques

• Main Authors: Po-Wei Chen, 陳柏煒
• Other Authors: 吳家麟
• Format: Others
• Language: en_US
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/03347441528900151942

碩士 === 國立臺灣大學 === 資訊網路與多媒體研究所 === 96 === We propose a reliable unidirectional communication system capable of delivering information from audio speakers to nearby audience via acoustic channels. Though constrained by the short transmission distance and low data throughput of sound waves, communications based on acoustic channels can be regarded as a cost-free message delivery scheme because music playback systems and handheld devices equipped with recording capabilities are ubiquitous in our life. Furthermore, the proposed approach can provide better non-intrusiveness and more convenient user access than other auxiliary information delivery approaches, such as 2-D barcodes or watermarking schemes for visual contents. To the best of our knowledge, the proposed system is the first one that can effectively deliver information to receivers at feasible transmission throughput/robustness/distance within common noisy environments. Various interesting applications and new business models can be facilitated with the proposed scheme.