Aside from frequency response, loudspeaker distortion measurements are perhaps the most commonly used metrics to appraise loudspeaker performance. The stimuli utilized for many types of distortion measurements are not complex waveforms such as music or speech, thus the measured distortion characteristics of the Device Under Test may not reflect the performance of the device when reproducing typical program material. The topic of this paper is the exploration of a new multitone sequence stimulus to measure loudspeaker system distortion. This method gives a reliable estimation of the average nonlinear distortion produced with music on a loudspeaker system, and delivers a global objective assessment of the distortion for a DUT in a normal use case.
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