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The syllables of speech contain information about the vocal tract length (VTL) of the speaker as well as the phonetic message. Ideally, the pre-processor used for automatic speech recognition (ASR) should segregate the phonetic message from the VTL information. This paper describes a method to calculate VTL-invariant auditory feature vectors from speech, using a method in which the message and the...
Image fusion is used to improve target detection and identification. In human-observer applications it is useful to rank fusion methods according to how well they assist the observer in a decision task. Two images (medium- and long-wave infrared), acquired for each of a number of outdoor scenes, were fused by each of nine methods. For each scene, a set of observers assessed each of the 36 pairwise...
The purpose of this paper is to identify the differences between millimetre-wave small-signal scattering parameter device measurements on-wafer in coplanar and microstrip test formats. Calibration in coplanar and microstrip is examined to determine the measurement reference planes and possible calibration problems in the millimetre-wave frequency range. Different device model reference planes are...
A monolithic digital phase shifter with novel means of precise phase adjustment has been developed. A conventional switched low-pass/high-pass filter structure has been modified for precision phase control. For very fine phase adjustments, in the order of a few degrees, the adjustment is obtained by allowing a relatively small variable signal through the "off" channel and adding it vectorially...
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