hide
Free keywords:
multiple sweep measurement, review board, advance manuscript, audio engineering society, additional paper, qualified anonymous reviewer, convention paper
Abstract:
A system identification by impulse response measurements with multiple sound source configurations can benefit
greatly from time-efficient measurement procedures. An optimized method by interleaving and overlapping of
multiple exponential sweeps (MESM) used as excitation signals was presented by Majdak et al. (2007). For single
system identifications, however, much higher signal-to-noise ratios (SNR) can be reached with sweeps whose
magnitude spectra are adapted to the background noise spectrum of the acoustical environment, as proposed by
Müller & Massarani (2001). We investigated on which conditions and to what extent the efficiency of multiple
sweep measurements can be increased by using arbitrary, spectrally adapted sweeps. An extension of the MESM
approach towards generalized sweep spectra is presented, along with a recommended measurement procedure and a
prediction of the efficiency of multiple sweep measurements depending on typical measurement conditions.
