Title: A new cosine series antialiasing function and its application to aliasing-free glottal source models for speech and singing synthesis,
Abstract: We formulated and implemented a procedure to generate aliasing-free
excitation source signals. It uses a new antialiasing filter in the continuous
time domain followed by an IIR digital filter for response equalization. We
introduced a cosine-series-based general design procedure for the new
antialiasing function. We applied this new procedure to implement the
antialiased Fujisaki-Ljungqvist model. We also applied it to revise our
previous implementation of the antialiased Fant-Liljencrants model. A
combination of these signals and a lattice implementation of the time varying
vocal tract model provides a reliable and flexible basis to test fo extractors
and source aperiodicity analysis methods. MATLAB implementations of these
antialiased excitation source models are available as part of our open source
tools for speech science.