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TW201615031A - Sound output control circuit - Google Patents

Sound output control circuit

Info

Publication number
TW201615031A
TW201615031A TW103135073A TW103135073A TW201615031A TW 201615031 A TW201615031 A TW 201615031A TW 103135073 A TW103135073 A TW 103135073A TW 103135073 A TW103135073 A TW 103135073A TW 201615031 A TW201615031 A TW 201615031A
Authority
TW
Taiwan
Prior art keywords
sound
sound output
output device
control circuit
sound signal
Prior art date
Application number
TW103135073A
Other languages
Chinese (zh)
Other versions
TWI559782B (en
Inventor
Yuan-Li Chien
Original Assignee
Giga Byte Tech Co Ltd
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 Giga Byte Tech Co Ltd filed Critical Giga Byte Tech Co Ltd
Priority to TW103135073A priority Critical patent/TWI559782B/en
Publication of TW201615031A publication Critical patent/TW201615031A/en
Application granted granted Critical
Publication of TWI559782B publication Critical patent/TWI559782B/en

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  • Amplifiers (AREA)

Abstract

The present invention relates to a sound output control circuit, which is connected with a sound output device with load impedance. The control circuit comprises a sound amplifying unit and a control unit. The sound amplifying unit is used to receive at least one sound signal, amplify the sound signal by an amplification factor, and output the amplified sound signal through the sound output device. The control unit detects the value of load impedance of the sound output device to adjust the amplification factor of the sound amplifying unit. By detecting the value of load impedance of the sound output device to adjust the amplification factor of the sound signal, the maximum effective voltage value of the amplified sound signal will not exceed and approximate the full scale output voltage (FSOV) of the sound output device, so the sound output device may be operating at the best working status.
TW103135073A 2014-10-08 2014-10-08 Sound output of the control circuit TWI559782B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW103135073A TWI559782B (en) 2014-10-08 2014-10-08 Sound output of the control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW103135073A TWI559782B (en) 2014-10-08 2014-10-08 Sound output of the control circuit

Publications (2)

Publication Number Publication Date
TW201615031A true TW201615031A (en) 2016-04-16
TWI559782B TWI559782B (en) 2016-11-21

Family

ID=56361335

Family Applications (1)

Application Number Title Priority Date Filing Date
TW103135073A TWI559782B (en) 2014-10-08 2014-10-08 Sound output of the control circuit

Country Status (1)

Country Link
TW (1) TWI559782B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108347670A (en) * 2017-01-23 2018-07-31 芯籁半导体股份有限公司 Signal processing method and signal processing system
TWI633795B (en) * 2017-01-23 2018-08-21 芯籟半導體股份有限公司 A signal processing system and a method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW252236B (en) * 1994-07-15 1995-07-21 Peavey Electronics Corp Power amplifier with clipping level control
TWI330991B (en) * 2004-07-16 2010-09-21 Hon Hai Prec Ind Co Ltd System having compensation parameters
TWI382654B (en) * 2007-02-16 2013-01-11 Realtek Semiconductor Corp Driver amplifier circuit and method thereof
TWI387359B (en) * 2009-01-21 2013-02-21 Ite Tech Inc Voltage generating apparatus for headphone
JP5780119B2 (en) * 2011-10-31 2015-09-16 ヤマハ株式会社 Audio output amplifier
CN102412799B (en) * 2011-11-24 2014-11-26 深圳Tcl新技术有限公司 Method and device for matching audio amplifier with sound load
CN103916775A (en) * 2012-12-31 2014-07-09 广州励丰文化科技股份有限公司 Control method of intelligent noise-reducing speaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108347670A (en) * 2017-01-23 2018-07-31 芯籁半导体股份有限公司 Signal processing method and signal processing system
TWI633795B (en) * 2017-01-23 2018-08-21 芯籟半導體股份有限公司 A signal processing system and a method
CN108347670B (en) * 2017-01-23 2020-03-20 芯籁半导体股份有限公司 Signal processing method and signal processing system

Also Published As

Publication number Publication date
TWI559782B (en) 2016-11-21

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees