Test signals can be developed that combine both the objective and subjective measurement disciplines. This is easiest and most effective when the signal focuses on a specific subjective attribute, rather than trying to make one signal measure distortion and spectral uniformity, for example. A stereo sphere microphone that is suggested by Theile can be effectively used to measure frequency response and distortion test signals in automotive sound systems. It can also be utilized to subjectively evaluate (through headphones or loudspeakers) the acoustic recording of the test signals modified by automotive audio system. A test signal has to be tolerable for it to be effective with the test subjects. A rich harmonic tone and tone bursts were found to be effective for both subjective listening and technical measurement. Non-verbal, graphical forms were quite effective at eliciting responses from the test subjects, and it took less time for the test administrator to explain the proper usage of the form.
Test signals for the objective and subjective evaluation of automotive audio systems
2000
11 Seiten, 22 Bilder, 23 Quellen
Conference paper
English
Test signals for subjective vehicle audio evaluation
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