We discuss the reconstruction of piecewise smooth data from its (pseudo-) spectral information. Spectral projections enjoy superior resolution provided the data is globally smooth, while the presence of jump discontinuities is responsible for spurious O(1) Gibbs oscillations in the neighborhood of edges and an overall deterioration to the unacceptable rst-order convergence rate. The purpose is ...

We present a unified approach to constructing linear space-time (ST) block codes based on unitary constellation-rotating (ST-CR) precoders. We show that with an arbitrary number of M -transmit and N -receive antennas, ST-CR precoders achieve 1 symbol/sec rate and enjoy maximum diversity gainMN over both quasi-static and fast fading channels. We also compare real with complex rotations to deline...

Introduction Human hearing is concerned with the perception and interpretation of sensory input to the ears. Such perception may be classiied as auditory events as opposed to sound events 5-1]. A sound event is the physical phenomenon of mechanical vibration which can characterize a sound source, while an auditory event is the brain's perception of an auditory phenomenon which may or may not be...

This paper proposes several methods for noise reduction using deterministic side information about the desired signal as a constraint on the reconstruction. Two forms of side information are considered separately: short-time linear predictive coefficients, and short-time zero-phase impulse response coefficients. We derive general expressions for the ML, MAP and MMSE estimators, and develop algo...

In this paper, we numerically quantify the information capacity of a sensor, by examining the different factors than can limit this capacity, namely sensor spectral response, noise, and sensor blur (due to fill factor, cross talk and diffraction, for given aperture). In particular, we compare the effectiveness of raw color space for different kinds of sensors. We also define an intrinsic notion...

We conducted human language identification (LID) experiments using signals with reduced segmental information in pursuit of cues that humans use in their remarkable LID ability, which may be applicable to the development of robust automatic LID. American English and Japanese excerpts from the OGI-TS were processed by (1) spectral-envelope removal (SER) and (2) temporal-envelope modulation. With...