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Towards shifted NMF for improved monaural separation
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)The ability of Non-negative Matrix Factorisation (NMF) to decompose magnitude spectrogram into meaningful entities has found use in many audio applications. NMF can be used to factorise audio spectrogram of a music signal ... -
Improved stereo instrumental track recovery using median nearest-neighbour inpainting
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)Several algorithms have been proposed for vocal removal which operate by finding the position of the vocals in the stereo field and removing the time-frequency bins associated with that position. However, in many cases, ... -
Formal verification of ‘full chip’ containing ‘shell’ partitions with and without feed-thrus
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)The `Full Chip' module of an ASIC is made up of various partitions and similar to individual partitions, it also goes through various stages of the physical design. The initial design-planning works on the existing pins ... -
Modeling user behaviour in response to cyberthreats
(IET CONFERENCE PUBLICATIONS, 2013-06)Considerable challenges exist for the average computer user, organizations and indeed governmental agencies with the advent and evolution of threats directed against the computer user today. Combating cyberthreats has not ... -
Near-field radiation patterns for an Ultra-Wide-Band antenna
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)We present a three-dimensional time dependent model for simulating the electromagnetic radiation field patterns generated by Ultra-Wide-Band (UWB) antennas. UWB antennas are pulsed mode radiators used to communicate ... -
On the application of two dimensional chirplets for resilient digital image watermarking
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)Chirplets (swept-frequency harmonic signals) find applications in several areas, including real and synthetic aperture radar, (Fresnel) optics and image processing. The robustness of chirplets to extreme (additive) noise ... -
Error-free authentication watermarking based on prediction-error-expansion reversible technique
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)Watermarking technology is an efficient method to protect multimedia content. In this paper, an error-free authentication watermarking is proposed based on prediction-error-expansion reversible technique. A binary image ... -
Cooperatively extending the range of indoor localisation
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)Whilst access to location based information has been mostly possible in the outdoor arena through the use of GPS, the provision of accurate positioning estimations and broad coverage in the indoor environment has proven ... -
Motion-onset visual evoked potentials for gaming: A pilot study
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)This paper details a pilot study for a motion onset Visual Evoked Potential (mVEP) based Brain Computer Interface (BCI) controlled game. mVEP is a type of VEP that uses visual responses from the dorsal pathway of the visual ... -
Budgetary and redundancy optimisation of homogeneous series-parallel systems subject to availability constraints using matlab implemented genetic computing
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)This paper deals with finding optimal structures and redundant safety designs with minimal costs for series-Parallel multi state system (MSS) configurations subject to availability constraints using genetic algorithms as ... -
Online estimation of VVoIP quality-of-experience via network emulation
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)We describe a testing framework that can provide online estimates of audio and video call quality on network paths, without requiring either end-user involvement or prior availability of audio/video sequences or network ... -
Robust digital video watermarking using reversible data hiding and visual cryptography
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)Watermarking is a major image processing application used to authenticate user documents by embedding and hiding some authenticated piece of information behind an image, audio or the video file. For example, copyright ... -
Ghostbusters: A parts-based NMF algorithm
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)An exact nonnegative matrix decomposition algorithm is proposed. This is achieved by 1) Taking a nonlinear approximation of a sparse real-valued dataset at a given tolerance-to-error constraint, c; Choosing an arbitrary ... -
Wireless sensed environment for body area networks
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)In low power wireless body area networks it is envisaged that there will be communication between on-body devices and wireless nodes placed in the environment (sensed environment) to provide a range of applications including ... -
Experimental evaluation of mobile phone sensors
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)Smart phone has become an important part of people's daily life. Most of current smart phone are equipped with a rich set of built-in sensors. The mobile applications such as geo-location based video annotation and indoor ... -
Vehicle speed estimation using GPS/RISS (Reduced Inertial Sensor System)
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)Land vehicle speed is usually measured by wheel speed or GPS. While these methods are adequate for some purposes, there are some drawbacks. Wheel speed may differ greatly from vehicle speed due to tyre slip. In addition, ... -
Reliable system design with a high degree of diagnostic procedures for embedded systems
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)Maintenance starts with reliable diagnostics. Programming Logic Controllers (PLCs) are often equipped with a high degree of diagnostic procedures in order to ensure that the processing unit is functioning correctly. It is ... -
A simplified approach to perceptual quality adaptation of multi-dimensional scalable video
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)Content Aware Networking (CAN) can enhance the distribution of media through awareness in the network of the content it is carrying. In this way functions such as content adaptation, content routing and resource allocation ... -
IEEE 802.15.4a UWB-IR ranging with bilateral transmitter power control methodology for multipath effects mitigation
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)IEEE 802.15.4a Ultra Wideband Impulse Radio (UWB-IR) measures the distance using the time-of-arrival (TOA) of the leading path signal. Multipath propagation in indoor environments can adversely affect the signal to noise ... -
Extraction of reliability indicators from large-scale, highly variable timing data of MEMS switches
(Signals and Systems Conference (ISSC 2013), 24th IET Irish, 2013-06)In this paper we present a method for monitoring and processing large-scale highly variable and nonlinear reliability data for MEMS RF Switches. The data is generated by measuring the switch actuation dynamics and a ...
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