Speech features have been selected to use as a watermark data because it unique for any individual instead of current digital watermarking techniques which use a digital sample such as a logo image, random numbers, or a digital signature as a watermark.
The proposed pd speech signal watermarking system has two main components, which are watermark embedding and watermark extraction a dwt-svd based watermarking scheme is adopted in the proposed system. Digital speech watermarking is a robust way to hide and thus secure data like audio and video from any intentional or unintentional manipulation through transmission in terms of some signal characteristics including bandwidth, voice/non-voice and production model, digital speech signal is different from audio, music and other signals. Speech watermarking is a possibility to use the existing voice communication channel to transmit this additional digital informa- tion while keeping the interference with the speech signal at a very.
Embedding watermark information in the cepstrum coefficients of a log spectral domain is a robust and inaudible method of watermarking into the speech signal (li and yu, 2000, gopalan, 2005, gopalan, 2009. In addition, a speech watermarking system should be robust to various speech compression operations the development of speech watermarking algorithms, therefore, involves a trade-off among speech fidelity, robustness, and watermark pattern embedding rate specifications. Watermarking is a good technique for speech authentication however, we can find a few literature studies which deal with this type of problems farid (1999) has described a method known as polyspectral analysis.
Abstract—both encryption and digital watermarking techniques need to be incorporated in a speech communication to address different aspects of speech content management. Speech is a specific form of audio signal therefore, the techniques developed for audio watermarking are presumed to be applicable to speech watermarking however, speech differs from typical audio signals with regard to spectral bandwidth, intensity distribution, signal continuity, and production modeling [ 3 , 4 . Speech modulation for image watermarking mourad talbi 1, ben fatima sira 2 1 previously mentioned, the speech processing is the major specifications of a watermarking system are: imperceptibility robustness (against intentional attacks or.
Mobile healthcare in a cloud-based system increases the easiness and the ubiquitous nature of patient-doctor relationship one of the major issues of this healthcare is secure transmission and.
A system for speech watermarking in an air trafﬁc control environment is developed the system uses spread spectrum technology with linear pre- speech watermarking is a possibility to use the existing voice communication channel to transmit this additional digital informa. To be effective, watermarking method should be implemented according to four requirements of (1) inaudibility to human auditory system, (2) blindness to extract watermarks without referring to the host signal, (3) robustness against speech processing, and (4) fragility against tampering.