EP1355510A3 - Loudspeaker arrangement and switching apparatus therefor - Google Patents

Loudspeaker arrangement and switching apparatus therefor Download PDF

Info

Publication number
EP1355510A3
EP1355510A3 EP03290832A EP03290832A EP1355510A3 EP 1355510 A3 EP1355510 A3 EP 1355510A3 EP 03290832 A EP03290832 A EP 03290832A EP 03290832 A EP03290832 A EP 03290832A EP 1355510 A3 EP1355510 A3 EP 1355510A3
Authority
EP
European Patent Office
Prior art keywords
loudspeaker
driven
audio signal
external
loudspeakers
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP03290832A
Other languages
German (de)
French (fr)
Other versions
EP1355510A2 (en
Inventor
Alan Anderson Hoover
Mark Alan Simpson
Robert Edward Morris
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
THOMSON LICENSING
Original Assignee
Thomson Licensing SAS
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
Priority claimed from US10/126,746 external-priority patent/US20030197811A1/en
Priority claimed from US10/126,743 external-priority patent/US20030198358A1/en
Application filed by Thomson Licensing SAS filed Critical Thomson Licensing SAS
Publication of EP1355510A2 publication Critical patent/EP1355510A2/en
Publication of EP1355510A3 publication Critical patent/EP1355510A3/en
Withdrawn legal-status Critical Current

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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/01—Input selection or mixing for amplifiers or loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/03—Connection circuits to selectively connect loudspeakers or headphones to amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/007—Protection circuits for transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Amplifiers (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Stereophonic Arrangements (AREA)

Abstract

There is provided an acoustic sound reproducing apparatus for a first audio signal and having an input terminal for receiving a second audio signal, a selector switch and at least one loudspeaker. The at least one loudspeaker is driven by an output signal from one of the first or second audio signal through the selector switch. As a result, the acoustic sound reproducing apparatus, and the apparatus providing the second audio signal, can commonly use a single loudspeaker or set of loudspeakers. When the external audio signal is selected, the internal loudspeaker(s) becomes part of the external loudspeaker arrangement for a surround sound system. When more than one loudspeaker is used, the loudspeakers are connected to each other in series when they are connected to be driven by the external second audio input signal instead of each being driven by their respective amplifiers. This permits the loudspeakers to be driven by an external amplifier having a higher power output than the internal power amplifier so that the loudspeakers will not be damaged when driven by a higher power external amplifier.
EP03290832A 2002-04-19 2003-04-03 Loudspeaker arrangement and switching apparatus therefor Withdrawn EP1355510A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US126743 1987-11-30
US10/126,746 US20030197811A1 (en) 2002-04-19 2002-04-19 Loudspeaker arrangement and switching apparatus therefor
US126746 2002-04-19
US10/126,743 US20030198358A1 (en) 2002-04-19 2002-04-19 Loudspeaker arrangement and switching apparatus therefor

Publications (2)

Publication Number Publication Date
EP1355510A2 EP1355510A2 (en) 2003-10-22
EP1355510A3 true EP1355510A3 (en) 2005-12-07

Family

ID=28677875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03290832A Withdrawn EP1355510A3 (en) 2002-04-19 2003-04-03 Loudspeaker arrangement and switching apparatus therefor

Country Status (5)

Country Link
EP (1) EP1355510A3 (en)
JP (1) JP2003319487A (en)
KR (1) KR20030083579A (en)
CN (1) CN1452435A (en)
MX (1) MXPA03003248A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007116643A (en) * 2005-10-18 2007-05-10 Audio Design:Kk Audio signal processor
JP4779655B2 (en) * 2006-01-10 2011-09-28 ヤマハ株式会社 Stereo / monaural switching circuit and integrated circuit including the circuit
WO2016183763A1 (en) * 2015-05-18 2016-11-24 Hewlett-Packard Development Company, L.P. Audio and video processors
CN106790899A (en) * 2017-01-04 2017-05-31 上海傅硅电子科技有限公司 A kind of system that performance is put outside convenient evaluation and test handset audio

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944941A (en) * 1973-08-01 1976-03-16 Sony Corporation Switching circuit for use with balanced transformerless amplifier
JPS57103500A (en) * 1981-10-28 1982-06-28 Matsushita Electric Ind Co Ltd Sound circuit device
US4481660A (en) * 1981-11-27 1984-11-06 U.S. Philips Corporation Apparatus for driving one or more transducer units
JPH05244685A (en) * 1992-02-28 1993-09-21 Toshiba Corp Television receiver
US5329371A (en) * 1991-12-13 1994-07-12 Sony Corporation Loudspeaker system automatically switched between video and audio units

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944941A (en) * 1973-08-01 1976-03-16 Sony Corporation Switching circuit for use with balanced transformerless amplifier
JPS57103500A (en) * 1981-10-28 1982-06-28 Matsushita Electric Ind Co Ltd Sound circuit device
US4481660A (en) * 1981-11-27 1984-11-06 U.S. Philips Corporation Apparatus for driving one or more transducer units
US5329371A (en) * 1991-12-13 1994-07-12 Sony Corporation Loudspeaker system automatically switched between video and audio units
JPH05244685A (en) * 1992-02-28 1993-09-21 Toshiba Corp Television receiver

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 189 (E - 133) 28 September 1982 (1982-09-28) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 003 (E - 1485) 6 January 1994 (1994-01-06) *

Also Published As

Publication number Publication date
KR20030083579A (en) 2003-10-30
JP2003319487A (en) 2003-11-07
MXPA03003248A (en) 2003-10-22
CN1452435A (en) 2003-10-29
EP1355510A2 (en) 2003-10-22

Similar Documents

Publication Publication Date Title
DE602004022766D1 (en) Bass-management-systeme
WO2003071827A3 (en) Compact surround-sound system
EP1651007A3 (en) Multichannel sound reproduction apparatus and multichannel sound adjustment method
CN104754484A (en) Hearing instrument with switchable power supply voltage
EP1617704A3 (en) Receiver with multiple drive coils
EP3544316A1 (en) Audio signal processing device and sound box
EP0570229A3 (en) Abnormal sound detecting apparatus
EP1777990A3 (en) Multi-channel audio system
WO2005043508A3 (en) A portable voice studio system and method
WO2003094396A8 (en) Discrete surround audio system for home and automotive listening
KR100861162B1 (en) Stereo/monaural switching circuit and integrated circuit having the same
EP1355510A3 (en) Loudspeaker arrangement and switching apparatus therefor
EP1003282A3 (en) Integrated circuit for processing audio signal
US20020048378A1 (en) Deep bass sound booster device
US8625820B2 (en) Amplifier circuit audio circuit and electronic device
JP2004120407A5 (en)
CN218240722U (en) Audio transmission circuit
US8649527B2 (en) Amplifier circuit, electronic device, method for configuring an amplifier circuit
EP1209944A3 (en) Circuit assembly for widening the stereobase of stereophonic sound signals
CN215871762U (en) Reverberation audio system, microphone equipment and sound box equipment
DE69712926D1 (en) STEREO TO ROOM SOUND REINFORCEMENT SOUND DECODING CIRCUIT
JPH09325784A (en) Sound field controller
US20100079205A1 (en) Multi-Channel Amplifier
US20030197811A1 (en) Loudspeaker arrangement and switching apparatus therefor
US20080002843A1 (en) Ripple digital amplifier system

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THOMSON LICENSING

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

17P Request for examination filed

Effective date: 20060510

AKX Designation fees paid

Designated state(s): DE FR GB

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20081103