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Convention Paper

Digital Measurement for Dynamic Distortion of Loudspeakers

Authors: Imaoka, Keiichi; Ohga, Juro

AES Convention 120 · Paper 6843 · May 2006

Abstract

Most measuring methods by using digital signal processing technique developed recently are only for measurements in a linear range. There is still no suitable measuring method by a digital processing system for measurement of nonlinear distortion of acoustical devices. An accurate and convenient nonlinear distortion measurement system should be developed.
The authors already proposed a new digital distortion measuring method for acoustical devices briefly. This method applies a Pink-TSP signal (Time Stretched Pulse, i.e. quickly swept sinusoidal signal), whose frequency band is partially eliminated, to an acoustical system to be measured. The detected component produced in the rejected band is measured as a distortion. This paper analyzes experimental results theoretically by using a single resonant system.

Details

Published in
AES Convention 120
AES Convention
120
Paper number
6843
Publication date
May 6, 2006
Session subject
Loudspeakers and Sound Reinforcement
Affiliation
Shibaura Institute of Technology (See document for exact affiliation information.)
Type
Convention Paper