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Design of countermeasures for spoofed speech detection system
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)
Automatic Speaker Verification (ASV) systems are vulnerable to speech synthesisand voice conversion techniques due to spoofing attacks.Recently, to encourage thedevelopment of anti-spoofing measures or countermeasures for ...
Secure and efficient dealing with node capture attack in wireless sensor networks
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)
Wireless Sensor Networks (WSN) have found enormous applications in various areas of day-to-day life such as in health-care, battle-field surveillance and disaster management. The communication amongst the sensor nodes ...
Wavelets and filter banks: novel approaches for real and complex-valued transform designs
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)
Processing of natural images stored as 2-D discrete signals is an inevitable task in almost all areas of image processing. In order to have the desired processing results, directional image representation can be considered ...
Design of QbE-STD System: audio representation and matching perspective
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)
The retrieval of the spoken document and detecting the query (keyword) within the audio document have attained huge research interest. The problem of retrieving audio documents and detecting the query (keyword) using a ...
Dense disparity estimation using stereo images
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)
"“Stereo vision” refers to the ability to infer information on the three-dimensional (3D) structure and distance/depth of a scene using two images captured from different view-points. It imitates one of the tasks performed ...
Efficient, revocable and auditable access over encrypted cloud data
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)
Cloud data outsourcing services can potentially help reduce the IT budget of organizations. However, they pose significant risks to the security and privacy of the data as the data is outsourced to untrusted third-party ...
Design and analysis of distortion reduction techniques in direct conversion receiver
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)
Direct-conversion is alternative wireless receiver architecture to the well-established super heterodyne architecture. Direct-conversion receiver (DCR) can offer highly integrated, low-power and low-cost hardware Solutions ...
Signal processing methods for robust heart rate estimation from multimodal physiological signals
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)
Cardiovascular diseases are the major cause of world-wide mortality. Heart rate (HR) and heart rate variability (HRV) are important health parameters to monitor functioning of heart of cardiac patients. Multimodal physiological ...