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Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind
09:01

Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind

Published on: March 27, 2013

Personal audio with multiple dark zones.

Matthew Jones1, Stephen J Elliott

  • 1Institute of Sound and Vibration Research, University of Southampton, University Road, Highfield, Southampton, United Kingdom. mj@isvr.soton.ac.uk

The Journal of the Acoustical Society of America
|February 12, 2009
PubMed
Summary
This summary is machine-generated.

This study optimizes personal audio systems for a single listener ("bright zone") by minimizing sound leakage to surrounding areas ("dark zones"). A novel source arrangement improves sound isolation by approximately 20 dB.

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Area of Science:

  • Acoustics
  • Audio Engineering
  • Signal Processing

Background:

  • Personal audio systems often struggle to isolate sound to a single listener.
  • Minimizing sound leakage to adjacent areas is crucial for private listening experiences.

Purpose of the Study:

  • To develop and optimize a local acoustic source array for personalized audio delivery.
  • To investigate strategies for maintaining audio levels in a target zone while minimizing them in surrounding zones.

Main Methods:

  • Simulations using monopole models to evaluate control strategies.
  • Optimization of source arrangement based on sound power minimization and bright zone level constraints.
  • Validation using Boundary Element Method (BEM) models and measured responses.

Main Results:

  • A specific two-source orientation demonstrated effective control over sound in adjacent and front dark zones.
  • Minimizing radiated sound power while constraining bright zone levels proved effective for isolating numerous dark zones.
  • The optimized source arrangement achieved approximately 20 dB isolation improvement up to 1 kHz.

Conclusions:

  • The proposed method effectively creates a personal audio zone with significant sound isolation.
  • Optimal source arrangement is key to enhancing the performance of localized audio systems.
  • The findings provide a validated approach for designing advanced personal audio solutions.