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The chorus effect revisited-experiments in frequency-domain analysis and simulation of ensemble sounds
- Kahlin, Daniel, 1972- (author)
- Ternström, Sten, 1956- (author)
- IEEE, 1999
- 1999
- English.
- In: Conference Proceedings of the EUROMICRO. - : IEEE. - 0769503217 ; , s. 75-80
- Conference paper (peer-reviewed)
Abstract
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- The so-called ’chorus’ or ’ensemble’ effect is interesting both musically and perceptually. It is usually imitated in effect devices using slowly varying time shifts, giving the impression of rotating speakers rather than of an ensemble. M. Dolson (1983) found that the quasi-random amplitude modulation of beating partials alone can cue the perception of ensemble. The small changes in frequency, he found, are less salient perceptually. This suggests an alternative simulation of the chorus effect. Attempts were made to corroborate Dolson’s finding, and to simulate ensembles in the frequency domain by modulating only partial tone amplitudes, using three approaches: filter banks, real FFTs and complex FFTs. The exact partial envelopes of a choral sound were found to be elusive, partly because the sidebands of one partial will overlap its neighbours at higher frequencies. The outcome of these trials is discussed and illustrated with sound examples. © 1999 IEEE.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Keyword
- choir
- chorus effect
- ensemble simulation
- filter bank
- Speech and Music Communication
- Tal- och musikkommunikation
Publication and Content Type
- ref (subject category)
- kon (subject category)
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