Mike D. Edgington

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This paper presents a set of novel algorithms for the signal modification component of concatenative text-to-speech systems. The algorithms described here are based around the LPC analysis/synthesis framework, and achieve prosodic modification by time-domain processing of the LPC residual. The modified residual is then recombined with the all-pole spectral(More)
To preserve shape-invariance when pitch or timescale modifying sinusoidally modelled voiced speech, the phases of the sinusoids used to model the glottal excitation are made to add coherently at estimated excitation points. Previous methods achieve this by estimating excitation phases at synthesis frame boundaries, disregarding the frequency modulation that(More)
To preserve the waveform shape and perceived quality of pitch and timescale modified sinusoidally modelled voiced speech, the phases of the sinusoids used to model the glottal excitation are made to add coherently at estimated pitch pulse locations. The glottal excitation is therefore made to resemble a pseudo-periodic impulse train, a quality essential for(More)
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