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Active stereo sound localization.

Greg L Reid1, Evangelos Milios

  • 1Department of Computer Science, York University, Toronto M3J 1P3, Canada.

The Journal of the Acoustical Society of America
|February 1, 2003
PubMed
Summary
This summary is machine-generated.

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This study introduces a novel method for estimating sound direction using two microphones on a movable mount, simplifying hardware needs. This approach allows for accurate sound source localization with standard audio equipment.

Area of Science:

  • Acoustics
  • Signal Processing
  • Robotics

Background:

  • Traditional sound direction estimation requires complex, fixed microphone arrays and specialized hardware.
  • Existing methods are often costly and lack portability.

Purpose of the Study:

  • To develop a cost-effective and portable system for estimating sound direction of arrival (DOA).
  • To utilize standard two-channel audio hardware for 3D sound localization.

Main Methods:

  • A system with two omnidirectional microphones on a fixed baseline was developed.
  • Microphone positions were made variable using computer-controlled pan-and-tilt units.
  • A signal processing and control algorithm was designed for DOA estimation.

Main Results:

Related Experiment Videos

  • The system successfully estimated the direction of arrival for both impulsive and speech sounds.
  • Experiments were conducted in a standard, reverberant indoor environment.
  • The proposed method demonstrated effectiveness with real-world audio data.

Conclusions:

  • The developed system offers a practical alternative for sound DOA estimation.
  • The use of movable microphones and standard hardware simplifies the setup.
  • This approach is suitable for portable and cost-sensitive applications.