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

Evaluation of orthogonal polynomial compression.

H Levitt1, A C Neuman

  • 1Center for Research in Speech and Hearing Sciences, City University of New York, New York 10036.

The Journal of the Acoustical Society of America
|July 1, 1991
PubMed
Summary
This summary is machine-generated.

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 selection and validation of output sound pressure level in multichannel hearing aids.

Ear and hearing·2002
Same author

Field measurements of electromagnetic interference in hearing aids.

Journal of the American Academy of Audiology·2001
Same author

Digital wireless telephones and hearing aids: new challenges for audiology.

Journal of the American Academy of Audiology·2001
Same author

The nature of electromagnetic interference.

Journal of the American Academy of Audiology·2001
Same author

Noise reduction in hearing aids: a review.

Journal of rehabilitation research and development·2001
Same author

The narrative processes coding system: research applications and implications for psychotherapy practice.

Journal of clinical psychology·2000
Same journal

High-resolution depth estimation for multiple wideband sources in deep sea via sparse Bayesian learninga).

The Journal of the Acoustical Society of America·2026
Same journal

Depression markers in speech: An approach based on tract variables dynamics.

The Journal of the Acoustical Society of America·2026
Same journal

The oyster toadfish (Opsanus tau) alters active and diurnal calling amid vessel noise in New York City.

The Journal of the Acoustical Society of America·2026
Same journal

Experimental noise characterisation of phase-locked tandem-rotor in edgewise flight.

The Journal of the Acoustical Society of America·2026
Same journal

The tune-text-temporal synergy: Prosodic effects of final segmental weakening in Neapolitan.

The Journal of the Acoustical Society of America·2026
Same journal

Monitoring vessel movement above critical offshore infrastructure using distributed acoustic sensing.

The Journal of the Acoustical Society of America·2026
See all related articles

Orthogonal polynomial compression improved speech recognition for hearing-impaired individuals by adjusting temporal variations in speech spectra. Compressing average level showed significant benefits, comparable to traditional amplitude compression.

Area of Science:

  • Audiology
  • Signal Processing
  • Speech Science

Background:

  • Traditional hearing aids often struggle to optimize speech clarity for individuals with sensorineural hearing loss.
  • Conventional linear amplification may not adequately address the complex temporal variations present in speech signals.
  • Exploring novel signal processing techniques is crucial for enhancing auditory perception in challenging listening environments.

Purpose of the Study:

  • To investigate the efficacy of orthogonal polynomial compression in improving speech recognition for sensorineural hearing-impaired listeners.
  • To evaluate the impact of compressing different temporal variations (level, slope, curvature) of the speech spectrum on speech recognition.
  • To compare the performance of orthogonal polynomial compression with conventional linear amplification and amplitude compression.

Related Experiment Videos

Main Methods:

  • Speech signals were approximated using orthogonal polynomials, with coefficients adjusted for average value and variation range.
  • Compression strategies targeted temporal variations in spectrum level, slope, and quadratic curvature.
  • The method was implemented in a digital master hearing aid and tested on eight hearing-impaired listeners, measuring speech recognition scores under various conditions.

Main Results:

  • Orthogonal polynomial compression of temporal variations in the average level of the short-term speech spectrum yielded significant speech recognition advantages over linear amplification.
  • This level-compression benefit was comparable to conventional amplitude compression.
  • A subset of participants showed additional gains when spectrum slope variations were compressed, but these gains were matched by frequency shaping combined with level-only compression.

Conclusions:

  • Compressing temporal variations in the average level of the speech spectrum using orthogonal polynomials is a promising strategy for enhancing speech recognition in hearing-impaired individuals.
  • Further compression of spectrum slope and curvature did not yield additional benefits for speech recognition in this study.
  • Orthogonal polynomial compression offers a viable alternative or adjunct to traditional amplification methods for improving speech perception.