JPS57101491A - Speaker device - Google Patents

Speaker device

Info

Publication number
JPS57101491A
JPS57101491A JP17735180A JP17735180A JPS57101491A JP S57101491 A JPS57101491 A JP S57101491A JP 17735180 A JP17735180 A JP 17735180A JP 17735180 A JP17735180 A JP 17735180A JP S57101491 A JPS57101491 A JP S57101491A
Authority
JP
Japan
Prior art keywords
signal
digital
switch
degridge
amplifier
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.)
Pending
Application number
JP17735180A
Other languages
Japanese (ja)
Inventor
Satoshi Endo
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP17735180A priority Critical patent/JPS57101491A/en
Publication of JPS57101491A publication Critical patent/JPS57101491A/en
Pending 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/005—Details of transducers, loudspeakers or microphones using digitally weighted transducing elements

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

PURPOSE:To eliminate noise and distortion generated by an amplifier, etc. and to achieve reproduction with high fidelity, by converting a digital output signal from a digital audio device without using such as the amplifier, into an audio output with a speaker element. CONSTITUTION:A generated voltage Vs of a constant voltage source 1 is kept constant with a voltage set digital signal A, and a degridge switch 2 is turned on with a degridge control signal B. A switch group 3 consisting of semiconductor analog switches is driven with a digital input signal C from a digital audio device, and a resulting resistance of a resistance network 4 weighted with the priority of each bit of the signal C is changed. Thus, a current I flowing to a circuit consisting of a constant voltage source 1, switch 2, switch group 3, resistance network 4 and speaker element 5 is changed and an audio output according to the signal C is obtained from the element 5. Further, the cut-off frequency of the element 5 is set to <=1/2 of the sampling frequency of the signal C.
JP17735180A 1980-12-16 1980-12-16 Speaker device Pending JPS57101491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17735180A JPS57101491A (en) 1980-12-16 1980-12-16 Speaker device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17735180A JPS57101491A (en) 1980-12-16 1980-12-16 Speaker device

Publications (1)

Publication Number Publication Date
JPS57101491A true JPS57101491A (en) 1982-06-24

Family

ID=16029442

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17735180A Pending JPS57101491A (en) 1980-12-16 1980-12-16 Speaker device

Country Status (1)

Country Link
JP (1) JPS57101491A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0543198A (en) * 1991-08-15 1993-02-23 Nippon Yuusen Kk Forklift
KR100484898B1 (en) * 1997-07-25 2005-08-24 삼성전자주식회사 Audio output device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0543198A (en) * 1991-08-15 1993-02-23 Nippon Yuusen Kk Forklift
KR100484898B1 (en) * 1997-07-25 2005-08-24 삼성전자주식회사 Audio output device

Similar Documents

Publication Publication Date Title
JPS5585135A (en) Mos-fet switching circuit
KR890017998A (en) Stereo Enlarge Circuit Selection Switch
JPS55159630A (en) Analog switch
JPS57101491A (en) Speaker device
JPS5916443B2 (en) power amplifier
JPS5545264A (en) Switch circuit
JPS5754409A (en) Signal interruption circuit
JPS5541012A (en) Gain control circuit
JPS57101492A (en) Speaker device
JPS56166613A (en) Voltage to current converting circuit
JPS55156407A (en) Amplifying circuit for pulse-width-modulated signal
JPS5482157A (en) Electronic switch circuit
JPS5620315A (en) Low-frequency amplifying circuit
JPS5721105A (en) Audio power amplifier
JPS5776918A (en) A/d converter
JPS5643833A (en) Switching circuit for complementary characteristic
JPS57118495A (en) Speaker device
JPS57133707A (en) Bias circuit for power amplifier
JPS56106406A (en) Audio amplifier
JPS56168427A (en) Analog-to-digital converter
JPS5715295A (en) Sample holding circuit
SU1292184A1 (en) Bipolar digital-to-analog converter
US3170020A (en) Apparatus for producing bass sounds in electric musical instruments wherein contrabass voice can be obtained by special switch and circuit
JPS5783925A (en) Digital-to-analog converter
JPS5735403A (en) Amplifier