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Convention Paper

An Approach to the Generation of Subharmonic Frequencies in Audio Applications

Authors: Leckschat, Dieter; Epe, Christian

AES Convention 136 · Paper 9040 · April 2014

Abstract

In recording studios it is common to use equipment and algorithms to enhance audio productions in the low frequency range. Today’s methods use either a frequency-selective dynamic compression or focus on psychoacoustics to take advantage of the residuum effect. The basic subject of this paper is a method to generate sub-harmonics of an audio signal. The most interesting sub-harmonic is one octave below a signal´s fundamental frequency. By implementing a mathematical formula it is possible to produce an oscillation at half the frequency of a given harmonic oscillation. The method works in the analog or digital domain and instantaneous, which makes it suited for real-time applications of musicians. Depending on the design the process can be optimized for stationary signals or for signals with transient components.

Details

Published in
AES Convention 136
AES Convention
136
Paper number
9040
Publication date
April 6, 2014
Session subject
Signal Processing
Affiliation
University of Applied Sciences Düsseldorf, Duesseldorf, Germany (See document for exact affiliation information.)
Type
Convention Paper