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Convention Paper

Generalized Multiple Sweep Measurement

Authors: Weinzierl, Stefan; Giese, André; Lindau, Alexander

AES Convention 126 · Paper 7767 · May 2009

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.

Details

Published in
AES Convention 126
AES Convention
126
Paper number
7767
Publication date
May 6, 2009
Session subject
Spatial Rendering
Affiliation
TU Berlin, Audio Communication Group, Berlin, Germany (See document for exact affiliation information.)
Type
Convention Paper