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A technique for hiding data in audio signals using subband amplitude modulation was evaluated by a computer simulation in terms of robustness with respect to cascaded disturbances of reverberations, background noises, and the speech codec. Speech signals from 22 speakers and signals from 100 pieces of music in various genres were served to the host audio data. Computer simulation showed that the speech...
Reproducing stego audio signal via a loudspeaker and detecting embedded data from a recorded sound from a microphone are challenging with respect to the application of data hiding. A watermarking technique using subband amplitude modulation was applied to a system that displays text information synchronously with the watermarked audio signal transmitted in the air. The robustness of the system was...
A now watermarking system based on amplitude modulation is proposed. Sinusoidal amplitude modulations at relatively low modulation frequencies applied to the neighboring subband signals in opposite phase are used as the carrier of embedded information. The embedded information is encoded in the form of the relative phase differences between the amplitude modulations applied to several groups of sub...
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