Acoustic Data Transmission Based on Modulated Complex Lapped Transform

Acoustic data transmission is a technique to embed the data in a sound wave imperceptibly and to detect it at the receiver. This letter proposes a novel acoustic data transmission system designed based on the modulated complex lapped transform (MCLT). In the proposed system, data is embedded in an audio file by modifying the phases of the original MCLT coefficients. The data can be transmitted by playing the embedded audio and extracting it from the received audio. By embedding the data in the MCLT domain, the perceived quality of the resulting audio could be kept almost similar as the original audio. The system can transmit data at several hundreds of bits per second (bps), which is sufficient to deliver some useful short messages.

[1]  Sugato Chakravarty,et al.  Method for the subjective assessment of intermedi-ate quality levels of coding systems , 2001 .

[2]  Cristina Videira Lopes,et al.  Aerial acoustic communications , 2001, Proceedings of the 2001 IEEE Workshop on the Applications of Signal Processing to Audio and Acoustics (Cat. No.01TH8575).

[3]  Henrique S. Malvar.  A modulated complex lapped transform and its applications to audio processing , 1999, 1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258).

[4]  Henrique S. Malvar,et al.  Fast algorithm for the modulated complex lapped transform , 2003, IEEE Signal Processing Letters.

[5]  Yusuke Nakashima,et al.  Acoustic OFDM: Embedding High Bit-Rate Data in Audio , 2008, MMM.

[6]  Bernd Edler,et al.  Aliasing Reduction for Modified Discrete Cosine Transform Domain Filtering and its Application to Speech Enhancement , 2007, 2007 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics.

[7]  Xinjian Chen,et al.  New algorithm for modulated complex lapped transform with symmetrical window function , 2004, IEEE Signal Processing Letters.

[8]  Yusuke Nakashima,et al.  Acoustic Communication with OFDM Signal Embedded in Audio , 2006 .

[9]  Parham Aarabi,et al.  Communication Over an Acoustic Channel Using Data Hiding Techniques , 2006, IEEE Transactions on Multimedia.

[10]  Yôiti Suzuki,et al.  Audio Watermark Enhanced by LDPC Coding for Air Transmission , 2006, 2006 International Conference on Intelligent Information Hiding and Multimedia.

[11]  H. Matsuoka,et al.  Evaluation and Demonstration of Acoustic OFDM , 2006, 2006 Fortieth Asilomar Conference on Signals, Systems and Computers.

[12]  Yusuke Nakashima,et al.  Acoustic Communication System Using Mobile Terminal Microphones , 2007 .