Listeners are remarkably adept at recognising speech that has undergone extensive spectral reduction. Natural speech can be reproduced using as few as three time-varying sinusoids mimicking the corresponding speech formants. Untrained listeners are able to transcribe this `sine-wave' speech with a high degree of reliability. Phonetic percepts generated by sine-wave speech occur despite an appar...

The deposition of ultrasonic energy in tissue can cause tissue damage due to local heating. For pressures above a critical threshold, cavitation will occur, inducing a much larger thermal energy deposition in a local region. The present work develops a nonlinear bubble dynamics model to numerically investigate bubble oscillations and bubble-enhanced heating during focused ultrasound (HIFU) inso...

[1] Forced oscillations can push dissolved volatiles into bubbles by a process called rectified diffusion. In engineering applications, the pumping action of rectified diffusion makes bubbles grow. In the geosciences, rectified diffusion is a suggested mechanism to trigger volcanic eruptions with seismic waves generated by distant earthquakes. Previous geoscience studies adopted the engineering...

Much psychophysical evidence has indicated that the human visual system contains a number of independent mechanisms. each selectively sensitive to a narrow band of spatial frequencies [see Braddick et al.. (1979) for a complete review]. The existence of such a “multiple channei” visual system was first suggested by Campbell and Robson (1968) who based their inference on the relative detectabili...

Induction heating is the best method of providing fast, consistent heat for vast selection of manufacturing applications which involve bonding or changing the properties of metals or other electrically-conductive materials. Our project explains the analysis and design of a new AC–AC resonant converter applied to domestic induction heating. The project is based on the half-bridge series resonant...

Induction heating is the best method of providing fast, consistent heat for vast selection of manufacturing applications which involve bonding or changing the properties of metals or other electrically-conductive materials. Our project explains the analysis and design of a new AC–AC resonant converter applied to domestic induction heating. The project is based on the half-bridge series resonant...

Traditionally, static linearity and dynamic distortion tests are performed separately for ADCs. To this end, a low-frequency sinewave is histogrammed to measure static Integral Nonlinearity, and a high-frequency sine-wave is sampled for FFT processing to measure dynamic distortions and dynamic range. We propose to use a model-based technique to extract both static and dynamic nonlinearities fro...

Jon Barker and Martin Cooke fj.barker,[email protected] Department of Computer Science, University of She eld, She eld, UK ABSTRACT Progress in robust automatic speech recognition may bene t from a fuller account of the mechanisms and representations used by listeners in processing distorted speech. This paper reports on a number of studies which consider how recognisers trained on clean ...