Ercüment Zorlu

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AUDIO WATERMARKING, STEGANALYSIS USING AUDIO QUALITY METRICS, AND ROBUST AUDIO HASHING We propose a technique for the problem of detecting the very presence of hidden messages in an audio object. The detector is based on the characteristics of the denoised residuals of the audio file. Our proposition is established upon the presupposition that the hidden(More)
In this paper a channelizer implementation is performed on FPGA by first a demonstration through simulation and then by applying real test signals. In this study, polyphase FFT based method is selected as the channelization method. The wideband signal, with the bandwidth of 50 MHz, is sampled by 105 MHz and divided into 64 channels with the channel spacing(More)
New arrangements are studied to increase the performance of the automatic modulation recognition algorithm proposed by Elsayed-Elsayed Azzouz and Asoke Kumar Nandi based on statistical methods (see "Automatic Modulation Recognition of Communication Signals", Kluwer Academic Publishers, 1996; Signal Processing, vol.46, p.211-22, 1995). To increase the(More)
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