Title :
Algorithm of digital watermarks forming for audiosignals
Author_Institution :
Odessa Nat. Maritime Acad., Odessa, Ukraine
Abstract :
The novel algorithm of DWM forming is designed on the base of scalar product quantization for vectors of audio signal frequency coefficients and pseudorandom sequence. Adaptation of step quantization and multichannel processing using OFDM technology provide DWM robustness against amplitude distortions, filtering and digit-analog-digit transformation. Possibility of flexible choosing of algorithm parameters allows realizing DWM robustness-imperceptibility trade-off for construction of practical schemes of information security.
Keywords :
OFDM modulation; audio signal processing; audio watermarking; distortion; filtering theory; quantisation (signal); DWM forming algorithm; DWM robustness; DWM robustness-imperceptibility trade-off; OFDM technology; algorithm parameters; amplitude distortions; audio signal frequency coefficients vectors; audiosignals; digit-analog-digit transformation; digital watermarks algorithm; filtering; information security; multichannel processing; pseudorandom sequence; scalar product quantization; step quantization adaptation; Algorithm design and analysis; Electronic mail; OFDM; Quantization (signal); Robustness; Vectors; Watermarking;
Conference_Titel :
Microwave and Telecommunication Technology (CriMiCo), 2013 23rd International Crimean Conference
Conference_Location :
Sevastopol
Print_ISBN :
978-966-335-395-1
