Automated Intelligibility Measurement System.
Abstract
The report discusses the design, development, and test of a microprocessor based system for measuring the intelligibility of speech processed through a communications channel. The major components of the intelligibility measurement system include an audio test tape of fifty phonetically balanced (PB) words, a bank of twelve audio bandpass filters, an audio power detector, and a microprocessor. A time-frequency matrix of the starting and ending phonemes of each PB word is stored in memory as the reference. The system works by inputting a recording of the audio test tape as received over a communications channel. Timing marks included within the audio test tape allow comparison of the time-frequency history of the test tape. This comparison of the reference values with the test data yields an intelligibility score. Initial tests of the automatic intelligibility measurement system promise performance which will be superior to that of existing automated techniques.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1980
- Accession Number
- ADA095664
Entities
People
- Theodore Lerner