Comparison of Different Calculation Methods of Effective Duration (e) of the Running Autocorrelation Function of Music Signals
Abstract:This paper discusses methods to calculate the eff ective duration e of the running autocorrelation function (ACF) of music signals. The iterative method is newly proposed and compared with the methods of previous studies. The index R, describing the accuracy of the e regression, is also introduced. The iterative method was found to improve the accuracy of the e regression for orchestral music signals with a wide variation of ACF envelopes. The resulting e is discussed with reference to music tempo; the e value increased as the music tempo decreased. Also, a longer inter-onset interval led to a long e value and staccato results in a short e value.
Document Type: Research Article
Publication date: 2011-05-01
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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