Accession Number:

AD0611778

Title:

PROPOSAL FOR AN ANALOG COCHLEA,

Descriptive Note:

Corporate Author:

NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s):

Report Date:

1964-11-09

Pagination or Media Count:

50.0

Abstract:

Using bionics precept that Nature can suggest better solutions to engineering problems, an electrical ear model was designed for analyzing and classifying complex audio sounds. This lumped constant simulation approximates the transfer of sound energy to a mechanical displacement of the basiar membrance, which is within the inner ear or cochlea. Essentially, this model is a hardware adaption of the model proposed by James L. Flanagan of Bell Laboratories. The model consists of an electrical middle ear simulation, followed by an artificial cochlea. This cochlea consists of a special 201 tap delay line whose taps drive cochlea filters. These cochlea filters drive output amplifiers which have been designed to compensate for losses and drive artificial neurons used for processing the parallel outputs. For building this specific hardware model, the component values, tolerances, and specifications are included, along with considerations on signal level, dynamic range, noise, and power consumption. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE