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Swept Sine Chirps for Measuring Impulse Response

Authored on: Aug 26, 2010 by Ian H. Chan

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Log-sine chirp and variable speed chirp are two very useful test signals for measuring frequency response and impulse response. When generating pink spectra, these signals posses crest factors more than 6dB better than maximum- length sequence. In addition, log-sine chirp separates distortion products from the linear response, enabling distortion-free impulse response measurements, and variable speed chirp offers flexibility because its frequency content can be customized while still maintaining a low crest factor.
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