Listener Training and Repeatability for Automobiles
The benefits of trained listeners has been well established for listening in rooms and at computer workstations. Recent studies have illustrated the use of a self-administered PC-based training program to improve listeners' ability to reliably identify and rate different types of spectral peaks and dips which have been added to a variety of programs (i.e. resonance detection). Similar investigations have indicated that critical listening in automobiles might require a more detailed training regimen and additional repeats within a trial. A modified training program was used to train and evaluate subjects for automobile listening tests. The listener's repeatability was then studied when using a PC-based preference testing program and when listening in-situ. Criteria were established for determining listeners' accuracy in resonance detection, their proper application of that ability in a preference testing program, and for the number of listening repeats required for statistically significant ratings.
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