Skip to main content
padlock icon - secure page this page is secure

Evaluation of Speech Transmission Channels by Using Artificial Signals

Buy Article:

$30.00 + tax (Refund Policy)

A method is presented by which the effect of some current types of interferences on speech intelligibility can be quantified on the basis of simple physical measurements. The approach is based on the relationship of perceptual differences and physical differences among speech sounds. This relationship suggests that the effect of a transmission channel on intelligibility is strongly related to the degree to which the spectral differences, originated at the talker side, are preserved at the listener side. This leads to the definition of the Speech Transmission Index (STI) based upon: (1) a simple artificial test signal by which a “standard” spectral difference is introduced at the talker side of the channel, and (2) an analyzing procedure to be applied to the test signal received at the listener side in order to quantify the degree of preservation of the spectral difference introduced. The test signal and the analyzing procedure are optimized on the basis of the rank-order correlation between the STI-values and PB-word scores obtained for 50 different transmission channels, subjected to peak clipping, band-pass limiting, interfering noise or reverberation, in various degrees and a number of combinations. The relation between the STI approach and other methods is discussed.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: December 1, 1971

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
  • Editorial Board
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Information for Advertisers
  • Online User License
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more