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Spectral Models

As discussed in [456], spectral models are inspired by the mechanics of hearing. Typically they are based on the Short-Time Fourier Transform (STFT), but there are also signal models, such as Linear Predictive Coding (LPC) whose success derives from how well they match spectral characteristics of hearing [456]. Additionally, Frequency-Modulation (FM) synthesis is typically developed by tweaking FM parameters to match short-term audio spectra [82]. Other well known signal models rooted in the spectral point of view include the phase vocoder, additive synthesis, and so-called spectral modeling synthesis [456].



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