Sculptor: Exploring Timbral Spaces in Real Time
Characterization of the timbre of a sound from its spectrum or time series is of limited use in the context of electroacoustics because of the huge data set that is usually involved. The concept of a timbral space offers the potential to characterize sounds using a smaller set of variables, but it is not clear how the signal-derived parameters map onto their psychoacoustic correlates. Sculptor is a package that enables the analysis, parameterization, and editing of sounds in real time, requiring only inexpensive hardware. State-space techniques are used to decompose models of a selected sound into parallel second-order sections. The second-order resonator parameters can then be edited and the results auditioned in real time. The sound code of the package is available, so that researchers may provide additional functionality as required.
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