the possibility of terahertz generation has been investigated from a photoconductive switch based on gaas, gated by a femtosecond laser. the emission properties of photoconductive antenna (pca) with low-temperature-grown (lt) gaas have been studied. in such gaas materials presence of the charged defects induces a redistribution of the electric field between the antenna electrodes. this effect h...

A method for updating modal models from response measurements is extended from the case of a single impulsive excitation to a more general broadband excitation in the presence of secondary excitations. The original technique was based on analysis of the cepstrum of the response, as forcing function and transfer function effects are additive in the response cepstrum, and also separated if the fo...

A speaker identification experiment was performed with the 10 digits of the TI46 data corpus, spoken in isolation by 8 female and 8 male speakers. From each voiced frame of an utterance, a single fundamental period was extracted automatically and inverse-filtered to obtain an approximation of the glottal excitation function. Differently sized feature vectors were derived from the magnitude and ...