DMCA
Digital Signal Processing Techniques for Non-exponentially Decaying Reverberation
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BibTeX
@MISC{Piirilä_digitalsignal,
author = {Esa Piirilä and Tapio Lokki and Vesa Välimäki},
title = {Digital Signal Processing Techniques for Non-exponentially Decaying Reverberation},
year = {}
}
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Abstract
In this paper we show several digital signal processing techniques that can be used for non-exponentially decaying artificial reverberation. Traditional recursive filter techniques used for simulating the diffuse part of reverberation produce an exponentially decaying reverberation. We show how traditional reverberation algorithms can be modified and combined to create non-exponentially decaying reverberation. The techniques presented here can be used for interesting musical effects and speech enhancement. As an application example, a real-time system using the Motorola DSP56002 digital signal processor is presented. 1 Introduction Artificial reverberation has been used for dozens of years to add reverberation to studio recordings. The first digital reverberator was developed by Schroeder [1] over 30 years ago. His solution was based on a recursive structure constructed of parallel comb filters in series with two allpass filters. Later, Moorer [2] improved Schroeder's algorith...
Keyphrases
non-exponentially decaying reverberation digital signal processing technique musical effect introduction artificial reverberation traditional recursive filter technique several digital signal processing technique speech enhancement motorola dsp56002 digital signal processor decaying reverberation first digital reverberator application example real-time system parallel comb filter traditional reverberation algorithm recursive structure allpass filter studio recording artificial reverberation diffuse part
