|www.thinksrs.com-SR1_SweptSine.pdf|| Swept Sine Chirps for Measuring Impulse Response
Ian H. Chan
Stanford Research Systems, Inc.
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.