Psychoacoustic metrics for assessing the quality of automotive HMIs’ impulsive sounds

摘要: Abstract Designing an automotive HumanMachine Interface (HMI) falls into a resource intensive and iterative prototyping process, where design inputs also emerge from subjectively evaluating the products. These are defined outcome of automaker’s brand sense appraisal process: achieving desired holistic perception product experience. This work aims at characterizing acoustic feedback mechanical push–buttons’ prototypes, parametrizing their sound by array psychoacoustic parameters. A review literature published in quality was performed, specially addressing impulsive sounds. From this review, list metrics for both temporal spectral content stands as contribution to methodologies research made use Design Experiment (DOE), producing 18 minor variations push–button, designed affording different haptic feedback. Yet, DOE impact on emissions remained unclear. An experimental procedure allowed prototypes’ characterization with metrics. Parametric data analysed assess consistence within each differences among variations. The includes interpretation results perceptual thresholds, including Just–Noticeable Differences (JNDs) hearing sense. found discrepancies reports interpretations when comparing SPL loudness models, standardized models model specific It concluded that duration nature fast-decaying sounds explains models. Despite numerical differences, introduction JNDs showed prototypes almost do not introduce noticeable Exceptions were some designs single metric, duration.