Abstract
Several improvements to the time-spread echo hiding method are proposed for an aerial audio data hiding in which speech signals are broadcast by the outdoor loudspeakers of a voice evacuation and mass notification system. Evaluations of the data hiding system for speech signals were conducted using computer simulations including several disturbances caused by the long-distance (from 70 to 800 m) aerial transmission of sounds. The frequency response of a distant horn-array loudspeaker system, the absorption of sound by the atmosphere, reverberation and a single long-path echo, a constant frequency shift that mimics a small Doppler shift and a mismatch of sampling frequencies between sending and receiving devices, and additive background noise are simulated as disturbances. A background noise recorded outdoors was mixed to simulate a loud outdoor space in a city at signal-to-noise ratios of −5, 0, and 5 dB. The computer simulation results showed that the suppression of high- and low-frequency regions in the logarithmic spectral domain in the decoding process was significantly effective for the decoding performance. A novel hiding method of the alternating sign of echoes was moderately effective under relatively high SNR (0 and 5 dB) conditions.
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References
Cho, K., Choi, J., Jin, Y.G., Kim, N.S.: Quality enhancement of audio watermarking for data transmission in aerial space based on segmental SNR adjustment. In: Proceedings of IIHMSP 2012, pp. 122–125 (2012)
Chou, S.A., Hsieh, S.F.: An echo-hiding watermarking technique based on bilateral symmetric time spread kernel. In: Proceedings of ICASSP 2006 III, pp. 1100–1103 (2006)
TOA Corp.: TOA horn array speaker HA-450H (2014). http://www.toaelectronics.com/media/specs/ha450h_sa1e.pdf
Gruhl, Daniel, Lu, Anthony, Bender, Walter: Echo hiding. In: Anderson, Ross (ed.) IH 1996. LNCS, vol. 1174, pp. 295–315. Springer, Heidelberg (1996). doi:10.1007/3-540-61996-8_48
Hua, G., Goh, J., Thing, V.L.L.: Cepstral analysis for the application of echo-based audio watermark detection. IEEE Trans. Inf. Forensics Secur. 10(9), 1850–1861 (2015)
Hua, G., Goh, J., Thing, V.L.L.: Time-spread echo-based audio watermarking with optimized imperceptibility and robustness. IEEE/ACM Trans. Audio Speech Lang. Process. 23(2), 227–239 (2015)
Kim, H.J., Choi, Y.H.: A novel echo-hiding scheme with backward and forward kernels. IEEE Trans. Circ. Syst. Video Technol. 13(8), 885–889 (2003)
Ko, B.S., Nishimura, R., Suzuki, Y.: Time-spread echo method for digital audio watermarking. IEEE Trans. Multimedia 7, 212–221 (2005)
Matsuoka, H., Nakashima, Y., Yoshimura, T.: Acoustic OFDM system and performance analysis. IEICE Trans. Fundam. E91–A(7), 1652–1658 (2008)
Munekata, T., Yamatuchi, T., Handa, H., Nishimura, R., Suzuki, Y.: A portable acoustic caption decoder using IH technique for enhancing lives of the people who are deaf or hard-of-hearing – system configuration and robustness for airborne sound. In: Proceedings of IIHMSP 2007, pp. 406–409 (2007)
Nishimura, A.: Presentation of information synchronized with the audio signal reproduced by loudspeakers using an AM-based watermark. In: Proceedings of the 3rd International Conference on Intelligent Information Hiding and Multimedia Signal Processing, vol. 2, pp. 275–278. IEEE (2007)
Nishimura, A.: Aerial acoustic modem that is suitable to decode using a CELP-based speech encoder. In: Proceedings of IIHMSP 2010, pp. 514–517 (2010)
Nishimura, A.: Audio data hiding that is robust with respect to aerial transmission and speech codecs. Int. J. Innov. Comput. Inf. Control 6(3), 1389–1400 (2010)
Nishimura, A.: Simulation of long-distance aerial transmissions for robust audio data hiding. In: Proceedings of the 13th International Conference on Intelligent Information Hiding and Multimedia Signal Processing. Springer, Heidelberg (2017, in press)
Schroeder, M.R.: Modulation transfer functions: definition and measurement. Acustica 49, 179–182 (1981)
Tetsuya, K., Akihiro, O., Udaya, P.: Properties of an emergency broadcasting system based on audio data hiding. In: Proceedings of IIHMSP 2015, pp. 142–145 (2015)
Tetsuya, K., Kan, K., Udaya, P.: A disaster prevention broadcasting based on audio data hiding technology. In: Proceedings of Joint 8th International Conference on Soft Computing and Intelligent Systems and 17th International Symposium on Advanced Intelligent Systems, pp. 373–376 (2016)
Thiemann, J., Ito, N., Vincent, E.: DEMAND: diverse environments multichannel acoustic noise database (2013). http://parole.loria.fr/DEMAND/
Xiang, Y., Natgunanathan, I., Peng, D., Zhou, W.: A dual-channel time-spread echo method for audio watermarking. IEEE Trans. Inf. Forensics Secur. 7(2), 383–392 (2012)
Xiang, Y., Peng, D., Natgunanathan, I., Zhou, W.: Effective pseudonoise sequence and decoding function for imperceptibility and robustness enhancement in time-spread echo-based audio watermarking. IEEE Trans. Multimedia 13(1), 2–13 (2011)
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This study was partially supported by TOA Corporation. The author thanks the anonymous reviewers for their helpful comments and suggestions on this manuscript.
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Nishimura, A. (2017). Improvement and Evaluation of Time-Spread Echo Hiding Technology for Long-Distance Voice Evacuation Systems. In: Kraetzer, C., Shi, YQ., Dittmann, J., Kim, H. (eds) Digital Forensics and Watermarking. IWDW 2017. Lecture Notes in Computer Science(), vol 10431. Springer, Cham. https://doi.org/10.1007/978-3-319-64185-0_29
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DOI: https://doi.org/10.1007/978-3-319-64185-0_29
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