Investigation on Missing Fundamental by a Cochlea Model Generating Spontaneous Discharge

Abstract

It is considered that the pitch(f(sub 0)) is produced in auditory centers when we hear a complex tone of f(sub 1) = n f(sub 0), and = f (sub 2)(n+1) f(sub 0). f(sub 0) is known as missing fundamental. By a cochlea model we try to make clear the mechanism how missing fundamental is generated. The following signal is applied to the cochlea model. a(sub 1)sin(2 delta f(sub l)+a(sub 2)sin(2 delta f(sub 2 t). We make an aggregated autocorreleogram of output pulse trains from a cochlea model. We investigate methodically the relation between the information of missing fundamental in the output pulse trains and the values a(sub 1) and n, k in f(sub 1) = n f(sub 0), = (n+k) f(sub 0) by the aggregated autocorreleogram.

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Document Details

Document Type
Technical Report
Publication Date
Oct 25, 2001
Accession Number
ADA412205

Entities

People

  • T. Hoshi
  • T. Matsuoka

Organizations

  • Utsunomiya University

Tags

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Artificial Intelligence
  • Auditory Nerve
  • Displacement
  • Frequency
  • Frequency Modulation
  • Histograms
  • Intervals
  • Membranes
  • Military Research
  • Modulation
  • Neural Networks
  • Pulse Frequency Modulation
  • Sound Waves
  • Waves

Readers

  • Analytical Mechanics
  • Computational Modeling and Simulation
  • Speech Processing/Speech Recognition.