Search International and National Patent Collections

1. (WO2001006808) METHOD AND APPARATUS FOR SUPERVISING AN AUDIO CIRCUIT WITH CONTINUOUS AUDIO

Pub. No.:    WO/2001/006808    International Application No.:    PCT/US2000/019898
Publication Date: Fri Jan 26 00:59:59 CET 2001 International Filing Date: Fri Jul 21 01:59:59 CEST 2000
IPC: H04R 29/00
Applicants: WHEELOCK, INC.
Inventors: APPLEGATE, Edward, V.
BECKER, Thurman
CAPPETTA, Victor
Title: METHOD AND APPARATUS FOR SUPERVISING AN AUDIO CIRCUIT WITH CONTINUOUS AUDIO
Abstract:
An apparatus (100) and method for monitoring an audio circuit while the audio circuit is simultaneously generating an audio signal. Specifically, an AC audio signal and DC current source supervision signal are superimposed over a speaker circuit. These signals are superimposed at the junction (145) where a first DC filter (14) and a first AC filter (130) are connected.