PROPOSAL FOR AN ANALOG COCHLEA,
Abstract
Using bionic's 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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 09, 1964
- Accession Number
- AD0611778
Entities
People
- Frederick E. Warnock
Organizations
- Naval Ordnance Laboratory