Download Real-Time Partial Tracking in an Augmented Additive Synthesis System This paper describes an approach to real time partial tracking in an analysis\transformation\resynthesis system using a combination of linear and bi-linear time-frequency techniques. Tests of the system have been made using both natural and synthetic sounds. Results are presented and areas for further research and development are discussed.
Download Real time spectral expansion for creative and remedial sound transformation In this paper we describe the implementation, use and applications of WaveThresh, a real time Fourier\wavelet spectral expander. Expansion and reverse-expansion of spectral components is offered. In order that analysis methods can be better adapted to the signal we offer a combined wavelet\Fourier mode. This mode separates sinusoids from the rest of the signal (residual) and applies Fourier analysis to the sinusoids and wavelet analysis to the residual.
Download High Accuracy Frame-by-Frame Non-Stationary Sinusoidal Modelling This paper describes techniques for obtaining high accuracy estimates, including those of non-stationarity, of parameters for sinusoidal modelling using a single frame of analysis data. In this case the data used is generated from the time and frequency reassigned short-time Fourier transform (STFT). Such a system offers the potential for quasi real-time (frame-by-frame) spectral modelling of audio signals.
Download Short-Time Wavelet Analysis of Analytic Residuals for Real-Time Spectral Modelling This paper describes an approach to using compactly supported spline wavelets to model the residual signal in a real-time (frameby-frame) spectral modelling system. The outputs of the model are time-varying parameters (gain, centre frequency and bandwidth) for filters which can be used in a subtractive resynthesis system.