Experimental Investigation of the Optimal Filter as an Area Function Predictor. Speech Signal Processing Research at CHI

Abstract

During the contract period reported here, the author has investigated the optimal filter as a predictor of area functions of acoustical cavities. A model is presented which predicts spectra of circular cylindrical cavities with uniform steps in the area function. The model is used to fit data derived from the measured impulse response of such cavities. The filter is found to be in error by a length factor in predicting the area function of the cavities. The accuracy of the technique is also sensitive to the spectral content of the signal near the Nyquist frequency.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1975
Accession Number
ADA014579

Entities

People

  • Glen J. Culler
  • James F. Mcgill

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Boundaries
  • Contracts
  • Discontinuities
  • Equations
  • Frequency
  • Measurement
  • Notation
  • Plane Waves
  • Resonant Frequency
  • Signal Processing
  • Sound Transmission
  • Speech Compression
  • Spherical Waves
  • Time Dependence
  • Transmission Lines
  • Wave Equations
  • Waves

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Approximation Theory.
  • Optical Physics and Photonics.