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Frequency Domain Artificial Reverberation using Spectral Magnitude Decay

A novel method of producing artificial reverberation in the frequency domain, using spectral magnitude decay, is presented. The method involves scaling and decaying the magnitude response of the short-time Fourier transform, based on the desired room level and decay time as functions of frequency. Unlike time domain methods such as feedback delay networks, the current method requires less memory and provides independent control of the reverb energy and decay time in each frequency bin. Compared to convolution reverbs, the current approach offers flexible parametric control over the decay spectra and a computational cost that is independent of the decay time.

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AES - Audio Engineering Society