WO2001006808A3 - Method and apparatus for supervising an audio circuit with continuous audio - Google Patents

Method and apparatus for supervising an audio circuit with continuous audio Download PDF

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Publication number
WO2001006808A3
WO2001006808A3 PCT/US2000/019898 US0019898W WO0106808A3 WO 2001006808 A3 WO2001006808 A3 WO 2001006808A3 US 0019898 W US0019898 W US 0019898W WO 0106808 A3 WO0106808 A3 WO 0106808A3
Authority
WO
WIPO (PCT)
Prior art keywords
audio
circuit
supervising
continuous
audio circuit
Prior art date
Application number
PCT/US2000/019898
Other languages
French (fr)
Other versions
WO2001006808A2 (en
Inventor
Edward V Applegate
Thurman Becker
Victor Cappetta
Original Assignee
Wheelock Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wheelock Inc filed Critical Wheelock Inc
Priority to EP00948856A priority Critical patent/EP1196825A2/en
Priority to CA002380397A priority patent/CA2380397A1/en
Priority to MXPA02000718A priority patent/MXPA02000718A/en
Publication of WO2001006808A2 publication Critical patent/WO2001006808A2/en
Publication of WO2001006808A3 publication Critical patent/WO2001006808A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers

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.
PCT/US2000/019898 1999-07-20 2000-07-20 Method and apparatus for supervising an audio circuit with continuous audio WO2001006808A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP00948856A EP1196825A2 (en) 1999-07-20 2000-07-20 Method and apparatus for supervising an audio circuit with continuous audio
CA002380397A CA2380397A1 (en) 1999-07-20 2000-07-20 Method and apparatus for supervising an audio circuit with continuous audio
MXPA02000718A MXPA02000718A (en) 1999-07-20 2000-07-20 Method and apparatus for supervising an audio circuit with continuous audio.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US14471899P 1999-07-20 1999-07-20
US60/144,718 1999-07-20
US61954400A 2000-07-19 2000-07-19
US09/619,544 2000-07-19

Publications (2)

Publication Number Publication Date
WO2001006808A2 WO2001006808A2 (en) 2001-01-25
WO2001006808A3 true WO2001006808A3 (en) 2001-05-31

Family

ID=26842292

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/019898 WO2001006808A2 (en) 1999-07-20 2000-07-20 Method and apparatus for supervising an audio circuit with continuous audio

Country Status (4)

Country Link
EP (1) EP1196825A2 (en)
CA (1) CA2380397A1 (en)
MX (1) MXPA02000718A (en)
WO (1) WO2001006808A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6301592B2 (en) * 2013-05-21 2018-03-28 矢崎エナジーシステム株式会社 Failure detection device
US11263895B2 (en) 2017-04-05 2022-03-01 Carrier Corporation Audio riser active electrical supervision

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906491A (en) * 1973-05-14 1975-09-16 Federal Sign And Signal Corp Electronic alarm and emergency voice communication system
US4247848A (en) * 1978-02-16 1981-01-27 C. Hochiki Corporation Fire detector with a monitor circuit
US4568923A (en) * 1982-02-04 1986-02-04 Nittan Company, Limited Fire alarm system
US4703312A (en) * 1986-08-22 1987-10-27 Audiosone, Inc. Voice-override alarm system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906491A (en) * 1973-05-14 1975-09-16 Federal Sign And Signal Corp Electronic alarm and emergency voice communication system
US4247848A (en) * 1978-02-16 1981-01-27 C. Hochiki Corporation Fire detector with a monitor circuit
US4568923A (en) * 1982-02-04 1986-02-04 Nittan Company, Limited Fire alarm system
US4703312A (en) * 1986-08-22 1987-10-27 Audiosone, Inc. Voice-override alarm system

Also Published As

Publication number Publication date
CA2380397A1 (en) 2001-01-25
EP1196825A2 (en) 2002-04-17
MXPA02000718A (en) 2010-05-17
WO2001006808A2 (en) 2001-01-25

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