Frequency Domain Artificial Reverberation using Spectral Magnitude Decay
Praveen Gobichettipalayam Krishnan, Ravirala Narayana Karthik Sadanandam, Earl Vickers, Jian-Lung Wu · Journal of the Audio Engineering Society · 2006
A novel method of producing artificial reverberation in the frequency domain, using spectral magnitude decay, is presented. The method involves accumulating the magnitudes of the short-time Fourier transform, based on the desired decay time as a function of frequency. Compared to 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 decay time.