3 results for Pinder, SD

  • Where did that sound come from? Comparing the ability to localise using audification and audition

    Davies, C; Pinder, SD; Dodd, George; Burns, CM (2012)

    Journal article
    The University of Auckland Library

    A prototype device was developed to allow individuals to hear ultrasound reflections off environmental obstacles. Previous studies have shown that this device allows for better distance judgement than audition and allows for effective passage through the centreline of apertures. The purpose of this research was to evaluate audification as a method to localise direct sound sources as compared to audition. Method: In an anechoic environment, participants localised point-sound sources for three conditions: auditory, audified ultrasound with receivers facing laterally, and audified ultrasound with receivers facing forward. Results: Azimuth localisation was similar within a range of???35?? to 35?? in front of the participant among all conditions. At the periphery,???70?? and 70??, audified ultrasound was more accurate than audition for novice participants. No difference was evident in user elevation accuracy for these signals among the different conditions. Conclusion: Audification of ultrasound can be effective for localising point-source sounds in the azimuth direction, but more evidence is required to evaluate accuracy in the vertical direction.

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  • What's that sound? Distance determination and aperture passage from ultrasound echoes.

    Davies, Theresa; Pinder, SD; Burns, CM (2011)

    Journal article
    The University of Auckland Library

    Individuals with visual impairment have difficulty detecting obstacles that are above waist height. A prototype device was developed to allow individuals to hear ultrasound reflections off environmental obstacles. The purpose of this research was to evaluate novices' ability to evaluate distance and pass through apertures using this device.

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  • Where did that sound come from? Comparing the ability to localise using audification and audition

    Davies, Theresa; Pinder, SD; Dodd, George; Burns, CM (2012-03)

    Journal article
    The University of Auckland Library

    Purpose: A prototype device was developed to allow individuals to hear ultrasound reflections off environmental obstacles. Previous studies have shown that this device allows for better distance judgement than audition and allows for effective passage through the centreline of apertures. The purpose of this research was to evaluate audification as a method to localise direct sound sources as compared to audition. Method: In an anechoic environment, participants localised point-sound sources for three conditions: auditory, audified ultrasound with receivers facing laterally, and audified ultrasound with receivers facing forward. Results: Azimuth localisation was similar within a range of ???35?? to 35?? in front of the participant among all conditions. At the periphery, ???70?? and 70??, audified ultrasound was more accurate than audition for novice participants. No difference was evident in user elevation accuracy for these signals among the different conditions. Conclusion: Audification of ultrasound can be effective for localising point-source sounds in the azimuth direction, but more evidence is required to evaluate accuracy in the vertical direction.

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