Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Multimicrophone adaptive beamforming for interference reduction in hearing aids.

P M Peterson1, N I Durlach, W M Rabinowitz

  • 1Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge 02139.

Journal of Rehabilitation Research and Development
|January 1, 1987
PubMed
Summary

This study developed an adaptive beamforming method for hearing aids to reduce interference. The two-microphone system improved speech intelligibility in noisy and reverberant environments.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The Association Between Fruit and Vegetable Consumption and Fruit and Vegetable Stage of Change in Underserved Communities Engaging With Cooperative Extension Services.

Journal of nutrition education and behavior·2017
Same author

Efficacy and safety of maintenance pemetrexed in patients with advanced nonsquamous non-small cell lung cancer following pemetrexed plus cisplatin induction treatment: A cross-trial comparison of two phase III trials.

Lung cancer (Amsterdam, Netherlands)·2014
Same author

Failure to unlearn the precedence effect.

The Journal of the Acoustical Society of America·2000
Same author

Evaluation of feedback-reduction algorithms for hearing aids.

The Journal of the Acoustical Society of America·2000
Same author

Evaluation of response methods for the localization of nearby objects.

Perception & psychophysics·2000
Same author

Auditory localization of nearby sources. II. Localization of a broadband source.

The Journal of the Acoustical Society of America·1999

Area of Science:

  • Acoustics
  • Signal Processing
  • Audiology

Background:

  • Hearing aid users experience interference from spatially separated sound sources.
  • Monaural hearing aids often struggle to isolate target sounds from background noise.

Purpose of the Study:

  • To investigate an adaptive beamforming method for combining microphone information.
  • To reduce interference in monaural hearing aids by preserving target signals and minimizing off-axis noise.

Main Methods:

  • Developed a two-microphone adaptive beamforming system.
  • Evaluated the system using sentence intelligibility tests with normal-hearing subjects.
  • Tested in simulated environments (living room, conference room, anechoic) with on-axis targets and off-axis speech babble interference.

Related Experiment Videos

Main Results:

  • The beamformer reduced the required target-to-interference ratio for 50% intelligibility by 30 dB (anechoic), 14 dB (living room), and 0 dB (conference room) compared to a single microphone.
  • Improvements over binaural listening were 24 dB (anechoic), 9 dB (living room), and 0 dB (conference room).
  • Shortening filter impulse responses by a factor of four reduced the living room improvement by 5 dB.

Conclusions:

  • Adaptive beamforming shows promise for improving hearing aid performance in reducing interference.
  • Further research is needed for more complex acoustic environments and multiple interference sources.