Cart (Loading....) | Create Account
Close category search window

A new principle to avoid undesirable oscillations in electro acoustic loops application to the design of a hands free telephone set without voice switching

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Ferrieu, G. ; T.R.T. Le Plessis Robinson (France) ; Amstutz, P.

A new general principle is described which makes possible the avoidance of undesirable oscillations in feedback systems. The design of a hands free telephone set is taken as an example. This principle, whose theory and practical limitations are given, makes use of a sustained auxiliary electroacoustic oscillation, created intentionally in an auxiliary feedback loop containing a narrow band pass filter, to regulate the gain of an AGC amplifier inserted in the main loop in order that the modulus of the overall gain along the main loop might be always less than one. A suitable realization of the narrow band pass filter in the form of a special mechanical filter is also described.

Published in:

Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '82.  (Volume:7 )

Date of Conference:

May 1982

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.