WO2008001321A3 - A device for and a method of processing an audio signal - Google Patents

A device for and a method of processing an audio signal Download PDF

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Publication number
WO2008001321A3
WO2008001321A3 PCT/IB2007/052510 IB2007052510W WO2008001321A3 WO 2008001321 A3 WO2008001321 A3 WO 2008001321A3 IB 2007052510 W IB2007052510 W IB 2007052510W WO 2008001321 A3 WO2008001321 A3 WO 2008001321A3
Authority
WO
WIPO (PCT)
Prior art keywords
audio signal
processing
amplitude
adjusting
adjustment unit
Prior art date
Application number
PCT/IB2007/052510
Other languages
French (fr)
Other versions
WO2008001321A2 (en
Inventor
Saint Moulin Renaud De
Original Assignee
Koninkl Philips Electronics Nv
Saint Moulin Renaud De
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 Koninkl Philips Electronics Nv, Saint Moulin Renaud De filed Critical Koninkl Philips Electronics Nv
Publication of WO2008001321A2 publication Critical patent/WO2008001321A2/en
Publication of WO2008001321A3 publication Critical patent/WO2008001321A3/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers

Landscapes

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

Abstract

A device (100, 200) for processing an audio signal (101), wherein the device (100, 200) comprises an adjustment unit (105) adapted for adjusting a dead time setting for a power stage (102) of an amplifier based on an amplitude of the audio signal (103).
PCT/IB2007/052510 2006-06-30 2007-06-28 A device for and a method of processing an audio signal WO2008001321A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06116387.9 2006-06-30
EP06116387 2006-06-30

Publications (2)

Publication Number Publication Date
WO2008001321A2 WO2008001321A2 (en) 2008-01-03
WO2008001321A3 true WO2008001321A3 (en) 2008-06-19

Family

ID=38846072

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/052510 WO2008001321A2 (en) 2006-06-30 2007-06-28 A device for and a method of processing an audio signal

Country Status (1)

Country Link
WO (1) WO2008001321A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5930132A (en) * 1997-07-16 1999-07-27 Kabushiki Kaisha Wacogiken Semiconductor device, and method and apparatus for reducing a dead time in PWM inverter
WO2001022585A1 (en) * 1999-09-23 2001-03-29 Cirrus Logic, Inc. Adaptive dead time control for pushing-pull switching circuits
US20040041619A1 (en) * 2002-06-06 2004-03-04 International Recitifier Corporation Mosgate driver integrated circuit with adaptive dead time
US20060012428A1 (en) * 2004-07-16 2006-01-19 Kazunobu Ohkuri Class-D amplifier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5930132A (en) * 1997-07-16 1999-07-27 Kabushiki Kaisha Wacogiken Semiconductor device, and method and apparatus for reducing a dead time in PWM inverter
WO2001022585A1 (en) * 1999-09-23 2001-03-29 Cirrus Logic, Inc. Adaptive dead time control for pushing-pull switching circuits
US20040041619A1 (en) * 2002-06-06 2004-03-04 International Recitifier Corporation Mosgate driver integrated circuit with adaptive dead time
US20060012428A1 (en) * 2004-07-16 2006-01-19 Kazunobu Ohkuri Class-D amplifier

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
I.D.MOSELY ET AL.: "Effect of dead time on harmonic distortion in class-D audio amplifiers", ELECTRONIC LETTERS, vol. 35, no. 12, 10 June 1999 (1999-06-10), pages 950 - 952, XP002475357 *
JIANN-JONG CHEN ET AL: "Hysteresis-Current-Controlled Class-D Amplifier with Active Current Sensing Techniques", COMMUNICATIONS, CIRCUITS AND SYSTEMS PROCEEDINGS, 2006 INTERNATIONAL CONFERENCE ON, IEEE, PI, June 2006 (2006-06-01), pages 2737 - 2740, XP031010988, ISBN: 0-7803-9584-0 *

Also Published As

Publication number Publication date
WO2008001321A2 (en) 2008-01-03

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