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

Cross-spectral methods for processing speech.

D J Nelson1

  • 1Department of Defense, Ft. Meade, Maryland 20755, USA. waveland@erols.com

The Journal of the Acoustical Society of America
|January 5, 2002
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

Macrophage function in the elderly and impact on injury repair and cancer.

Immunity & ageing : I & A·2021
Same author

A comparative study of pain experienced during successive mammography examinations in patients with a family history of breast cancer and those who have had breast cancer surgery.

Radiography (London, England : 1995)·2020
Same author

A streaked X-ray spectroscopy platform for rapidly heated, near-solid density plasmas.

The Review of scientific instruments·2016
Same author

Towards microfluidic reactors for in situ synchrotron infrared studies.

The Review of scientific instruments·2016
Same author

IL-2/CD40-activated macrophages rescue age and tumor-induced T cell dysfunction in elderly mice.

Age (Dordrecht, Netherlands)·2014
Same author

CHROMOSOMAL ABERRATIONS IN A NATURAL POPULATION OF CHIRONOMUS TENTANS EXPOSED TO CHRONIC LOW-LEVEL ENVIRONMENTAL RADIATION. ORNL-3531.

ORINS [reports]. U.S. Atomic Energy Commission·2014
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

We developed new time-frequency methods to analyze complex speech signals, accurately estimating components like formant frequencies and group delays. This approach offers super-resolution for better signal analysis.

Area of Science:

  • Signal Processing
  • Acoustics
  • Speech Analysis

Background:

  • Conventional methods often assume signal stationarity, limiting analysis of dynamic signals like speech.
  • The Short-Time Fourier Transform (STFT) provides time-frequency representation but has limitations in resolving multicomponent signals.

Purpose of the Study:

  • To develop advanced time-frequency methods for analyzing nonstationary, multicomponent Frequency Modulated (FM) signals, particularly speech.
  • To achieve accurate joint estimation of signal components in both time and frequency, overcoming conventional limitations.

Main Methods:

  • Utilizing group delay, instantaneous frequency, and higher-order phase derivatives computed from the STFT.
  • Implementing a re-mapping algorithm based on phase derivatives to accurately represent FM signal components.

Related Experiment Videos

  • Employing cross-spectral products to avoid phase ambiguities during derivative estimation.

    • Main Results:

    • Demonstrated analytical and example-based convergence of the re-mapping algorithm to the FM representation.
    • Successfully applied methods to estimate speech parameters, including transmission channel group delay and speech formant frequencies.
    • Achieved simultaneous resolution of all FM components under a separability condition, offering super-resolution beyond STFT's Heisenberg uncertainty.

    Conclusions:

    • The proposed methods provide a unified approach for accurate time-frequency estimation of speech components.
    • Enables precise estimation of instantaneous formant frequencies, excitation time, and vocal tract/channel group delays.
    • Offers significant improvements in signal analysis accuracy and component resolution for complex FM signals.