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

Vowel identification based on amplitude modulation

B C Moore1, J I Alcántara

  • 1Department of Experimental Psychology, University of Cambridge, United Kingdom.

The Journal of the Acoustical Society of America
|April 1, 1996
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

Characterization of transient noise in Advanced LIGO relevant to gravitational wave signal GW150914.

Classical and quantum gravity·2020
Same author

GW150914: First results from the search for binary black hole coalescence with Advanced LIGO.

Physical review. D. (2016)·2020
Same author

Prospects for observing and localizing gravitational-wave transients with Advanced LIGO, Advanced Virgo and KAGRA.

Living reviews in relativity·2018
Same author

Bioavailability and uptake of smelter emissions in freshwater zooplankton in northeastern Washington, USA lakes using Pb isotope analysis and trace metal concentrations.

Environmental pollution (Barking, Essex : 1987)·2018
Same author

First Search for Nontensorial Gravitational Waves from Known Pulsars.

Physical review letters·2018
Same author

GW170104: Observation of a 50-Solar-Mass Binary Black Hole Coalescence at Redshift 0.2.

Physical review letters·2017
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

This study shows that vowel identification from amplitude modulated (AM) harmonic complexes depends on the modulation rate. Faster AM (10 Hz) relies on waveform valleys, while slower AM (2 Hz) uses momentary level increases for vowel recognition.

Area of Science:

  • Auditory perception
  • Speech processing
  • Psychoacoustics

Background:

  • Vowel identification is crucial for speech comprehension.
  • Harmonic complexes are used to model speech sounds.
  • Amplitude modulation (AM) plays a role in auditory perception.

Purpose of the Study:

  • To investigate vowel identification using flat-spectrum harmonic complexes.
  • To determine the effect of amplitude modulation (AM) rate and phase on vowel recognition.
  • To explore the role of waveform valleys and momentary level increases in auditory perception.

Main Methods:

  • Participants identified vowels from flat-spectrum harmonic complexes with amplitude modulated formants.
  • Experiments varied AM rate (10 Hz and 2 Hz), phase (cosine, random), and level randomization.

Related Experiment Videos

  • Modulation index and rove range were manipulated in specific conditions.

    • Main Results:

    • At 10 Hz AM, performance improved with modulation index and relied on waveform valleys (cosine phase).
    • At 2 Hz AM, performance was good with in-phase modulation and relied on momentary level increases when valleys were unavailable.
    • Random phase and level randomization generally impaired performance, especially at 2 Hz AM.

    Conclusions:

    • Vowel identification from harmonic complexes is sensitive to AM rate.
    • Auditory processing strategies differ based on AM rate, utilizing waveform valleys at higher rates and level increases at lower rates.
    • Phase and level cues significantly impact the effectiveness of AM in vowel perception.