WO2015039002A3 - Systèmes et procédés de détection d'impédance de charge d'un dispositif transducteur couplé à un dispositif audio - Google Patents

Systèmes et procédés de détection d'impédance de charge d'un dispositif transducteur couplé à un dispositif audio Download PDF

Info

Publication number
WO2015039002A3
WO2015039002A3 PCT/US2014/055576 US2014055576W WO2015039002A3 WO 2015039002 A3 WO2015039002 A3 WO 2015039002A3 US 2014055576 W US2014055576 W US 2014055576W WO 2015039002 A3 WO2015039002 A3 WO 2015039002A3
Authority
WO
WIPO (PCT)
Prior art keywords
transducer
audio
systems
methods
load impedance
Prior art date
Application number
PCT/US2014/055576
Other languages
English (en)
Other versions
WO2015039002A2 (fr
WO2015039002A4 (fr
Inventor
Anand Ilango
Daniel John Allen
Vivek JINDAL
Aniruddha SATOSKAR
Bharath Kumar THANDRI
Original Assignee
Cirrus Logic, 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
Priority claimed from US14/031,287 external-priority patent/US9438982B2/en
Priority claimed from US14/036,682 external-priority patent/US9578417B2/en
Application filed by Cirrus Logic, Inc. filed Critical Cirrus Logic, Inc.
Priority to CN201480062714.3A priority Critical patent/CN106063124B/zh
Priority to EP17207083.1A priority patent/EP3352373B1/fr
Priority to EP21175205.0A priority patent/EP3905517A1/fr
Priority to EP14777232.1A priority patent/EP3047571B1/fr
Publication of WO2015039002A2 publication Critical patent/WO2015039002A2/fr
Publication of WO2015039002A3 publication Critical patent/WO2015039002A3/fr
Publication of WO2015039002A4 publication Critical patent/WO2015039002A4/fr

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H03F1/0216—Continuous control
    • H03F1/0222—Continuous control by using a signal derived from the input signal
    • H03F1/0227—Continuous control by using a signal derived from the input signal using supply converters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • 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
    • H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)

Abstract

Selon des systèmes et des procédés de la présente invention, un dispositif audio peut inclure un terminal électrique, un circuit audio et un circuit de détection de charge de transducteur. Le terminal électrique peut coupler un dispositif de transducteur au dispositif audio. Le circuit audio peut générer un signal audio analogique, le signal audio analogique étant couplé au terminal électrique. Le circuit de détection de charge de transducteur peut détecter une impédance de charge du dispositif de transducteur lorsque le dispositif de transducteur est couplé au dispositif audio, à partir de caractéristiques mesurées au niveau du terminal électrique.
PCT/US2014/055576 2013-09-16 2014-09-15 Systèmes et procédés de détection d'impédance de charge d'un dispositif transducteur couplé à un dispositif audio WO2015039002A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201480062714.3A CN106063124B (zh) 2013-09-16 2014-09-15 用于检测耦合至音频设备的换能器设备的负载阻抗的系统及方法
EP17207083.1A EP3352373B1 (fr) 2013-09-16 2014-09-15 Systèmes et procédés de détection d'impédance de charge d'un dispositif transducteur couplé à un dispositif audio
EP21175205.0A EP3905517A1 (fr) 2013-09-16 2014-09-15 Systèmes et procédés de détection d'impédance de charge d'un dispositif transducteur couplé à un dispositif audio
EP14777232.1A EP3047571B1 (fr) 2013-09-16 2014-09-15 Systèmes et procédés de détection d'impédance de charge d'un dispositif transducteur couplé à un dispositif audio

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US201361878138P 2013-09-16 2013-09-16
US61/878,138 2013-09-16
US14/031,287 2013-09-19
US14/031,287 US9438982B2 (en) 2013-09-16 2013-09-19 Systems and methods for detection of load impedance of a transducer device coupled to an audio device
US14/036,136 2013-09-25
US14/036,682 2013-09-25
US14/036,682 US9578417B2 (en) 2013-09-16 2013-09-25 Systems and methods for detection of load impedance of a transducer device coupled to an audio device
US14/036,136 US9479868B2 (en) 2013-09-16 2013-09-25 Systems and methods for detection of load impedance of a transducer device coupled to an audio device

Publications (3)

Publication Number Publication Date
WO2015039002A2 WO2015039002A2 (fr) 2015-03-19
WO2015039002A3 true WO2015039002A3 (fr) 2015-07-02
WO2015039002A4 WO2015039002A4 (fr) 2015-08-13

Family

ID=51627369

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/055576 WO2015039002A2 (fr) 2013-09-16 2014-09-15 Systèmes et procédés de détection d'impédance de charge d'un dispositif transducteur couplé à un dispositif audio

Country Status (1)

Country Link
WO (1) WO2015039002A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9578417B2 (en) 2013-09-16 2017-02-21 Cirrus Logic, Inc. Systems and methods for detection of load impedance of a transducer device coupled to an audio device
US9438982B2 (en) 2013-09-16 2016-09-06 Cirrus Logic, Inc. Systems and methods for detection of load impedance of a transducer device coupled to an audio device
US9712906B1 (en) 2016-02-22 2017-07-18 Cirrus Logic, Inc. Alternating current (AC) load identification technique using a search algorithm
US9800984B2 (en) 2016-02-22 2017-10-24 Cirrus Logic, Inc. Identification of a load with a search algorithm that controls application of signals to the load and a reference generator
US9986351B2 (en) 2016-02-22 2018-05-29 Cirrus Logic, Inc. Direct current (DC) and/or alternating current (AC) load detection for audio codec
US10015607B2 (en) 2016-02-22 2018-07-03 Cirrus Logic, Inc. Temperature compensation for load identification
GB2563699B (en) * 2016-06-24 2022-03-02 Cirrus Logic Int Semiconductor Ltd Temperature compensation for load identification
CN108336894B (zh) * 2018-04-20 2023-03-28 吉林大学 一种提高光电倍增管输出信号信噪比的装置及控制方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10327026A (ja) * 1997-05-23 1998-12-08 Nippon Columbia Co Ltd 増幅器
EP1118865A1 (fr) * 2000-01-20 2001-07-25 STMicroelectronics S.r.l. Circuit et méthode de détection d'une impédance de charge
JP2002151974A (ja) * 2000-11-14 2002-05-24 Ari:Kk パルス幅変調アンプ
US20080144861A1 (en) * 2006-12-13 2008-06-19 Melanson John L Method and apparatus for controlling a selectable voltage audio power output stage
JP2008294803A (ja) * 2007-05-25 2008-12-04 Kenwood Corp 再生装置および再生方法
GB2465695A (en) * 2007-12-28 2010-06-02 Wolfson Microelectronics Plc A load discriminator for an audio amplifier, the discriminator not using a test signal
US20100194413A1 (en) * 2007-07-16 2010-08-05 Lab.Gruppen Ab Method of determining an impedance function of a loudspeaker
US7808324B1 (en) * 2009-03-17 2010-10-05 Cirrus Logic, Inc. Operating environment and process position selected charge-pump operating mode in an audio power amplifier integrated circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4960614A (en) 1987-02-06 1990-10-02 Key-Tech, Inc. Printed circuit board

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10327026A (ja) * 1997-05-23 1998-12-08 Nippon Columbia Co Ltd 増幅器
EP1118865A1 (fr) * 2000-01-20 2001-07-25 STMicroelectronics S.r.l. Circuit et méthode de détection d'une impédance de charge
JP2002151974A (ja) * 2000-11-14 2002-05-24 Ari:Kk パルス幅変調アンプ
US20080144861A1 (en) * 2006-12-13 2008-06-19 Melanson John L Method and apparatus for controlling a selectable voltage audio power output stage
JP2008294803A (ja) * 2007-05-25 2008-12-04 Kenwood Corp 再生装置および再生方法
US20100194413A1 (en) * 2007-07-16 2010-08-05 Lab.Gruppen Ab Method of determining an impedance function of a loudspeaker
GB2465695A (en) * 2007-12-28 2010-06-02 Wolfson Microelectronics Plc A load discriminator for an audio amplifier, the discriminator not using a test signal
US7808324B1 (en) * 2009-03-17 2010-10-05 Cirrus Logic, Inc. Operating environment and process position selected charge-pump operating mode in an audio power amplifier integrated circuit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KRZYSZTOF SOZANSKI: "DIGITAL CORRECTION FILTERS FOR SUBWOOFER LOUDSPEAKERSYSTEMS WITH ACOUSTIC DIPOLES", AUDIO ENGINEERING SOCIETY, 4, 21 September 2007 (2007-09-21) - 23 September 2007 (2007-09-23), Hilleröd, Denmark, pages 1 - 7, XP040374690 *

Also Published As

Publication number Publication date
WO2015039002A2 (fr) 2015-03-19
WO2015039002A4 (fr) 2015-08-13

Similar Documents

Publication Publication Date Title
WO2015038257A3 (fr) Systèmes et procédés de détection d'impédance de charge d'un dispositif de transducteur couplé à un dispositif audio
WO2015039002A3 (fr) Systèmes et procédés de détection d'impédance de charge d'un dispositif transducteur couplé à un dispositif audio
WO2016054352A3 (fr) Système d'essai électrique de dispositifs mobiles sur un poste commandé par le consommateur, et dispositifs et procédés associés
WO2014107469A3 (fr) Commande de haut-parleur de dispositif mobile
WO2014072733A3 (fr) Mesure de tension
MX2014003271A (es) Ubicacion de falla usando ondas viajeras.
EP3089128A3 (fr) Réglage de volume dynamique
WO2012109356A3 (fr) Détection de type d'accessoire audio et attribution de signal de broche de connecteur
MX357871B (es) Dispositivo de banda ancha para auscultación.
EP4152012A3 (fr) Conditionnement pour circuit électrique
EP3257449A3 (fr) Systèmes de commande pour instruments chirurgicaux
EP2546665A3 (fr) Dispositif électronique et système de détection de circuit ouvert et son procédé de détection
WO2011110255A3 (fr) Pointe de mesure à transducteur intégré
WO2018067316A3 (fr) Systèmes et procédés de détection d'environnement
EP2442124A3 (fr) Appareil acoustique et appareil de capteur acoustique incluant une fermeture
WO2015058074A8 (fr) Crayon actif à performance d'interférence améliorée
SG10201805671WA (en) Breaker design for power system resiliency
NZ709920A (en) Device and system for and a method of monitoring a cable for a physical disturbance
WO2015143233A3 (fr) Analyseur de signal de commutateur d'essai
GB2523516A (en) Detecting device installation and removal on a port
WO2014131505A8 (fr) Dispositif d'alarme
EP2781888A3 (fr) Dispositif pour détecter la position d'un organe de travail rotatif dans un palier magnétique actif
WO2010135388A3 (fr) Protecteur de circuit à matière active
EP2442123A3 (fr) Appareil acoustique et appareil de capteur acoustique incluant une pince
MX2019002126A (es) Deteccion de arco en sistemas de medidores electricos.

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14777232

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2014777232

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2014777232

Country of ref document: EP