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DK200600151A - Audio amplifier with speaker protection against transients - Google Patents

Audio amplifier with speaker protection against transients Download PDF

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Publication number
DK200600151A
DK200600151A DK200600151A DKPA200600151A DK200600151A DK 200600151 A DK200600151 A DK 200600151A DK 200600151 A DK200600151 A DK 200600151A DK PA200600151 A DKPA200600151 A DK PA200600151A DK 200600151 A DK200600151 A DK 200600151A
Authority
DK
Denmark
Prior art keywords
power amplifier
output
audio
audio signal
state
Prior art date
Application number
DK200600151A
Other languages
Danish (da)
Inventor
Christian M Andersen
Original Assignee
Remedan Af 1985 Aps
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 Remedan Af 1985 Aps filed Critical Remedan Af 1985 Aps
Priority to DK200600151A priority Critical patent/DK200600151A/en
Priority to PCT/DK2007/050012 priority patent/WO2007087812A1/en
Publication of DK200600151A publication Critical patent/DK200600151A/en

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/305Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52Circuit arrangements for protecting such amplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181Low-frequency amplifiers, e.g. audio preamplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G3/00Gain control in amplifiers or frequency changers
    • H03G3/20Automatic control
    • H03G3/30Automatic control in amplifiers having semiconductor devices
    • H03G3/34Muting amplifier when no signal is present
    • H03G3/348Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/03Indexing scheme relating to amplifiers the amplifier being designed for audio applications

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)

Claims (12)

1. Audioeffektforstærker omfattende - en indgang til modtagelse af et audiosignal, - en forstærker til forstærkning af det modtagne audiosignal, - en udgang til udsendelse af det forstærkede audiosignal, hvilken audioeffektforstærker er styrbar til at antage en aktiv tilstand, i hvilken det forstærkede audiosignal føres til udgangen, og en inaktiv tilstand, i hvilken der ikke føres noget forstærket audiosignal til udgangen, hvilken audioeffektforstærker yderligere omfatter - en indgang til modtagelse af et styresignal, og - audioeffektforstærkeren er indrettet til at antage den aktive tilstand eller den inaktive tilstand i afhængighed af det modtagne styresignal.An audio power amplifier comprising - an input for receiving an audio signal; - an amplifier for amplifying the received audio signal; to the output, and an inactive state in which no amplified audio signal is fed to the output, further comprising the audio power amplifier - an input for receiving a control signal, and - the audio power amplifier being adapted to assume the active state or the inactive state depending upon the received control signal. 2. Audioeffektforstærker ifølge krav 1, yderligere indrettet til at antage den aktive tilstand i en forud bestemt tidsperiode, efter at et styresignal er blevet modtaget, og at antage den inaktive tilstand, hvis intet styresignal er blevet modtaget i den forud bestemte tidsperiode.An audio power amplifier according to claim 1, further adapted to assume the active state for a predetermined time period after a control signal has been received and to assume the inactive state if no control signal has been received for the predetermined time period. 3. Audioeffektforstærker ifølge krav 1, yderligere indrettet til at antage den inaktive tilstand, hvis styresignalet modtages.An audio power amplifier according to claim 1, further arranged to assume the inactive state if the control signal is received. 4. Audioeffektforstærker ifølge krav 1, yderligere indrettet til at modtage et analogt audiosignal og til at udsende et analogt forstærket audiosignal.An audio power amplifier according to claim 1, further arranged to receive an analog audio signal and to output an analog amplified audio signal. 5. Audioeffektforstærker ifølge krav 1, yderligere indrettet til at modtage et digitalt audiosignal og til at udsende et analogt forstærket audiosignal.An audio power amplifier according to claim 1, further arranged to receive a digital audio signal and to output an analog amplified audio signal. 6. Fremgangsmåde til drift af en audioeffektforstærker, der har - en indgang, der modtager et audiosignal, - en forstærker til forstærkning af det modtagne audiosignal, - en udgang til udsendelse af det forstærkede audiosignal hvilken audioeffektforstærker er i stand til at antage en aktiv tilstand, i hvilken det forstærkede audiosignal føres til udgangen, og en inaktiv tilstand, i hvilken der ikke føres noget forstærket audiosignal til udgangen, hvilken audioeffektforstærker yderligere har - en indgang til modtagelse af et styresignal, og - audioeffektforstærkeren er indrettet til at antage den aktive tilstand eller den inaktive tilstand i afhængighed af styresignalet, hvilken fremgangsmåde omfatter - bestemmelse af en ønsket tilstand for audioeffektforstærkeren valgt mellem den aktive tilstand og den inaktive tilstand, og - styring af audioeffektforstærkeren ved hjælp af styresignalet til at antage den ønskede tilstand.A method of operating an audio power amplifier having - an input receiving an audio signal, - an amplifier for amplifying the received audio signal, - an output for transmitting the amplified audio signal which audio power amplifier is capable of assuming an active state , in which the amplified audio signal is fed to the output, and an inactive state in which no amplified audio signal is fed to the output, which audio power amplifier further has - an input for receiving a control signal, and - the audio power amplifier is arranged to assume the active state or the inactive state dependent on the control signal, comprising: determining a desired state of the audio power amplifier selected between the active state and the inactive state, and - controlling the audio power amplifier by the control signal to assume the desired state. 7. Audiosignalkilde omfattende - en kilde, der er i stand til at frembringe et audiosignal, - en audiosignaludgang, der kan forbindes med en audioeffektforstær-ker, og til at udsende audiosignalet til audioeffektforstærkeren, hvilken audioeffektforstærker er i stand til at antage en aktiv tilstand, i hvilken det forstærkede audiosignal føres til udgangen, og en inaktiv tilstand, i hvilken der ikke føres noget forstærket audiosignal til udgangen, - midler, der er i stand til at bestemme en ønsket tilstand for audioeffektforstærkeren valgt mellem den aktive tilstand og den inaktive tilstand og til frembringelse af et styresignal, der er indikativt for den ønskede tilstand for effektforstærkeren, - en styresrgnaludgang, der kan forbindes med audioeffektforstærkeren, og til udsendelse af styresignalet til audioeffektforstærkeren,An audio signal source comprising - a source capable of generating an audio signal, - an audio signal output connectable to an audio power amplifier, and transmitting the audio signal to the audio power amplifier, which audio power amplifier is capable of assuming an active state. in which the amplified audio signal is output to the output and an inactive state in which no amplified audio signal is output to the output, - means capable of determining a desired state of the audio power amplifier selected between the active mode and the inactive state and for generating a control signal indicative of the desired state of the power amplifier, - a control signal output that can be connected to the audio power amplifier, and for transmitting the control signal to the audio power amplifier, 8. Computersystem omfattende - en kilde, der er i stand til at frembringe et audiosignal, - en audiosignaludgang, der kan forbindes med en audioeffektforstærker, og til udsendelse af audiosignalet til audioeffektforstærkeren, der er i stand til at antage en aktiv tilstand, i hvilken det forstærkede audiosignal føres til udgangen, og en inaktiv tilstand, i hvilken der ikke føres noget forstærket audiosignal il udgangen, - en processor, der er i stand til at bestemme en ønsket tilstand for audioeffektforstærkeren valgt mellem den aktive tilstand og den inak tive tilstand og til frembringelse af et styresignal, der er indikativt for den ønskede tilstand for effektforstærkeren, - en styresignaludgang til udsendelse af styresignalet.A computer system comprising - a source capable of generating an audio signal, - an audio signal output connectable to an audio power amplifier, and for transmitting the audio signal to the audio power amplifier capable of assuming an active state in which the amplified audio signal is output to the output, and an inactive state in which no amplified audio signal is output at the output; - a processor capable of determining a desired state of the audio power amplifier selected between the active state and the inactive state; and for generating a control signal indicative of the desired state of the power amplifier, - a control signal output for transmitting the control signal. 9. Computersystem ifølge krav 8, hvor den ønskede tilstand afhænger af en aktuel tilstand for computersystemet.The computer system of claim 8, wherein the desired state depends on a current state of the computer system. 10. Computersystem ifølge krav 8, yderligere omfattende en audioeffektforstærker, der har - en indgang, der kan forbindes med audiosignaludgangen for modtagelse af audiosignalet, - en forstærker til forstærkning af det modtagne audiosignal, - en udgang til udsendelse af det forstærkede audiosignal, idet audioeffektforstærkeren er styrbar til antagelse af en aktiv tilstand, i hvilken det forstærkede audiosignal føres til udgangen, og en inaktiv tilstand, i hvilken der ikke føres noget forstærket audiosignal til udgangen, hvilken audioeffektforstærker yderligere omfatter - en indgang, der kan forbindes med styresignaludgangen for modtagelse af et styresignal, og - audioeffektforstærkeren er indrettet til at antage den aktive tilstand eller den inaktive tilstand i afhængighed af det modtagne styresignal.The computer system of claim 8, further comprising an audio power amplifier having - an input connectable to the audio signal output for receiving the audio signal, - an amplifier for amplifying the received audio signal, - an output for transmitting the amplified audio signal, said audio power amplifier is controllable for assuming an active state in which the amplified audio signal is fed to the output, and an inactive state in which no amplified audio signal is fed to the output, further comprising an audio power amplifier - an input which can be connected to the control signal output for receiving a control signal, and the audio power amplifier is arranged to assume the active state or the inactive state depending on the received control signal. 11. Computerprogram omfattende instruktioner for en computer til at - styre en kilde til frembringelse af et audiosignal og til at sende audiosignalet til en audioeffektforstærker, der er i stand til at antage en aktiv tilstand, i hvilken det forstærkede audiosignal sendes til udgangen, og en inaktiv tilstand, i hvilken der ikke sendes noget forstærket audiosignal til udgangen, - bestemme en ønsket tilstand for audioeffektforstærkeren valgt mellem den aktive tilstand og den inaktive tilstand og ti! at frembringe et styresignal, der er indikativt for den ønskede tilstand for effektforstærkeren.A computer program comprising instructions for a computer to - control a source for generating an audio signal and to transmit the audio signal to an audio power amplifier capable of assuming an active state in which the amplified audio signal is sent to the output, and a inactive state in which no amplified audio signal is output to the output, - determine a desired state of the audio power amplifier selected between the active state and the inactive state and ten! generating a control signal indicative of the desired state of the power amplifier. 12. Computeraflæselig registreringsbærer, hvorpå der er lagret et program ifølge krav 11.A computer-readable record carrier on which a program according to claim 11 is stored.
DK200600151A 2006-02-03 2006-02-03 Audio amplifier with speaker protection against transients DK200600151A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DK200600151A DK200600151A (en) 2006-02-03 2006-02-03 Audio amplifier with speaker protection against transients
PCT/DK2007/050012 WO2007087812A1 (en) 2006-02-03 2007-01-30 Audio amplifier with speaker protection against transients

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK200600151 2006-02-03
DK200600151A DK200600151A (en) 2006-02-03 2006-02-03 Audio amplifier with speaker protection against transients

Publications (1)

Publication Number Publication Date
DK200600151A true DK200600151A (en) 2007-08-04

Family

ID=37891935

Family Applications (1)

Application Number Title Priority Date Filing Date
DK200600151A DK200600151A (en) 2006-02-03 2006-02-03 Audio amplifier with speaker protection against transients

Country Status (2)

Country Link
DK (1) DK200600151A (en)
WO (1) WO2007087812A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110769353A (en) * 2018-12-04 2020-02-07 北京嘀嘀无限科技发展有限公司 Signal processing method, signal processing device, electronic equipment and storage medium

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5029005A (en) * 1990-04-25 1991-07-02 Rca Licensing Corporation Apparatus for the muting of an audio power amplifier in a standby mode
US5317470A (en) * 1991-05-06 1994-05-31 Thomson Consumer Electronics, Inc. Control system including a switching circuit for ensuring proper operation when operating power is removed from a portion of the control system
US5740453A (en) * 1995-03-03 1998-04-14 Compaq Computer Corporation Circuit for reducing audio amplifier noise during powering on and off
GB2307606A (en) * 1995-11-23 1997-05-28 Thomson Multimedia Sa Muting in a microprocessor-controlled audio apparatus
US5818948A (en) * 1996-10-23 1998-10-06 Advanced Micro Devices, Inc. Architecture for a universal serial bus-based PC speaker controller

Also Published As

Publication number Publication date
WO2007087812A1 (en) 2007-08-09

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