TY - GEN
T1 - A portable acoustic caption decoder using IH techniques for enhancing lives of the people who are deaf or hard-of-hearing - System configuration and robustness for airborne sound -
AU - Munekata, Tetsuya
AU - Yamaguchi, Toshimitsu
AU - Handa, Hiroki
AU - Nishimura, Ryouichi
AU - Suzuki, Yôiti
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2007
Y1 - 2007
N2 - A Portable Acoustic Caption Decoder enables a person who is deaf or hard-of-hearing to have access to audio announcements in public places if the auditory presentation accompanies embedded transcripts. Despite of discouraging results of studies indicating the low robustness of a signal that is transmitted through the air, our decoder successfully detected signals emitted from a loudspeaker located 77 meters away. Embedded bits were conveyed by white-noise in 16-bits digital (fs=44.1 kHz; 1,411 kbps) at 4bps using echo-hiding technique. The sound pressure level of the 77-meter point was as low as 46dB. Autocepstrum diagrams of the point showed that each of the embedded bits keep good "spikes". Although, further experiments are needed, the results will encourage researchers to use "airborne stego-sound" to explore more practical applications.
AB - A Portable Acoustic Caption Decoder enables a person who is deaf or hard-of-hearing to have access to audio announcements in public places if the auditory presentation accompanies embedded transcripts. Despite of discouraging results of studies indicating the low robustness of a signal that is transmitted through the air, our decoder successfully detected signals emitted from a loudspeaker located 77 meters away. Embedded bits were conveyed by white-noise in 16-bits digital (fs=44.1 kHz; 1,411 kbps) at 4bps using echo-hiding technique. The sound pressure level of the 77-meter point was as low as 46dB. Autocepstrum diagrams of the point showed that each of the embedded bits keep good "spikes". Although, further experiments are needed, the results will encourage researchers to use "airborne stego-sound" to explore more practical applications.
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U2 - 10.1109/IIH-MSP.2007.52
DO - 10.1109/IIH-MSP.2007.52
M3 - Conference contribution
AN - SCOPUS:47349106396
SN - 0769529941
SN - 9780769529943
T3 - Proceedings - 3rd International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIHMSP 2007.
SP - 271
EP - 274
BT - Proceedings - 3rd International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIHMSP 2007.
T2 - 3rd International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIHMSP 2007
Y2 - 26 November 2007 through 28 November 2007
ER -