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Article Dans Une Revue Journal of the Audio Engineering Society Année : 2015

Synchronized Swept-Sine: Theory, Application, and Implementation

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Résumé

Exponential, or sometimes called logarithmic, swept-sine signal is very often used to analyze nonlinear audio systems. In this paper, the theory of exponential swept-sine measurements of nonlinear systems is reexamined. The synchronization procedure necessary for a proper analysis of higher harmonics is detailed leading to an improvement of the formula for the exponential swept-sine signal generation. Moreover, an analytical expression of spectra of the swept-sine signal is derived and used in the deconvolution of the impulse response. A Matlab code for generation of the synchronized swept-sine, deconvolution, and separation of the impulse responses is given with discussion of some application issues and an illustrative example of harmonic analysis of current distortion of a woofer is provided.
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Dates et versions

hal-02504321 , version 1 (10-03-2020)

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Antonin Novak, Laurent Simon, Pierrick Lotton. Synchronized Swept-Sine: Theory, Application, and Implementation. Journal of the Audio Engineering Society, 2015, 63 (10), pp.786-798. ⟨10.17743/jaes.2015.0071⟩. ⟨hal-02504321⟩
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