JPS57185789A - Digital speaker - Google Patents

Digital speaker

Info

Publication number
JPS57185789A
JPS57185789A JP7015381A JP7015381A JPS57185789A JP S57185789 A JPS57185789 A JP S57185789A JP 7015381 A JP7015381 A JP 7015381A JP 7015381 A JP7015381 A JP 7015381A JP S57185789 A JPS57185789 A JP S57185789A
Authority
JP
Japan
Prior art keywords
audio signal
acoustic
diaphragms
horn
synthesized
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.)
Granted
Application number
JP7015381A
Other languages
Japanese (ja)
Other versions
JPH0439277B2 (en
Inventor
Kiyofumi Inanaga
Masaaki Nishimura
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP7015381A priority Critical patent/JPS57185789A/en
Publication of JPS57185789A publication Critical patent/JPS57185789A/en
Publication of JPH0439277B2 publication Critical patent/JPH0439277B2/ja
Granted 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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

PURPOSE:To eliminate the need for an electric D/A converter and give to the reproduced acoustic wave the same directivity as a conventional speaker, by directly driving the speaker with a PCM audio signal through the provision of a D/A converting function. CONSTITUTION:A diaphragm plane 1 is acoustically drives with a plurality of diaphragms S1-S5 located concentrically. That is, they are individually driven with each bit signal of a diaphragm PCM signal source. Thus, the sound pressure due to the displacement of the diaphragms are added and synthesized at the space in front of the diaphragm plane 1 and in the space, the acoustic waves proportional to the sampling value of the original audio signal. Since the acoustic wave is matched with a horn 2 at an equalizer 3, the original audio wave is reproduced at the outside of the horn 2. Although the audio signal added and synthesized as mentioned above includes high frequency components corresponding to quantized noise, the components are rejected with a porous sound absorber 4 constituting an acoustic filter to improve the S/N.
JP7015381A 1981-05-12 1981-05-12 Digital speaker Granted JPS57185789A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7015381A JPS57185789A (en) 1981-05-12 1981-05-12 Digital speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7015381A JPS57185789A (en) 1981-05-12 1981-05-12 Digital speaker

Publications (2)

Publication Number Publication Date
JPS57185789A true JPS57185789A (en) 1982-11-16
JPH0439277B2 JPH0439277B2 (en) 1992-06-29

Family

ID=13423342

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7015381A Granted JPS57185789A (en) 1981-05-12 1981-05-12 Digital speaker

Country Status (1)

Country Link
JP (1) JPS57185789A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58121897A (en) * 1982-01-14 1983-07-20 Nippon Gakki Seizo Kk Digital speaker
JPS59202797A (en) * 1983-04-30 1984-11-16 Onkyo Corp Electrostatic type electroacoustic transducer
JPS59207799A (en) * 1983-05-10 1984-11-24 Onkyo Corp Dynamic type electroacoustic transducer
JPS60244193A (en) * 1984-05-18 1985-12-04 Mitsubishi Electric Corp Electroacoustic transducer
EP0295641A2 (en) * 1987-06-16 1988-12-21 Matsushita Electric Industrial Co., Ltd. Loudspeaker system
WO2012100967A1 (en) * 2011-01-26 2012-08-02 Robert Bosch Gmbh Loudspeaker system comprising ultrasound damping system
EP3101907A1 (en) * 2015-06-01 2016-12-07 Université du Maine Digital loudspeaker

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5723387A (en) * 1980-07-17 1982-02-06 Nec Corp Pulse code modulation decoder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5723387A (en) * 1980-07-17 1982-02-06 Nec Corp Pulse code modulation decoder

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58121897A (en) * 1982-01-14 1983-07-20 Nippon Gakki Seizo Kk Digital speaker
JPS59202797A (en) * 1983-04-30 1984-11-16 Onkyo Corp Electrostatic type electroacoustic transducer
JPS59207799A (en) * 1983-05-10 1984-11-24 Onkyo Corp Dynamic type electroacoustic transducer
JPS60244193A (en) * 1984-05-18 1985-12-04 Mitsubishi Electric Corp Electroacoustic transducer
EP0295641A2 (en) * 1987-06-16 1988-12-21 Matsushita Electric Industrial Co., Ltd. Loudspeaker system
WO2012100967A1 (en) * 2011-01-26 2012-08-02 Robert Bosch Gmbh Loudspeaker system comprising ultrasound damping system
EP3101907A1 (en) * 2015-06-01 2016-12-07 Université du Maine Digital loudspeaker
WO2016193327A1 (en) * 2015-06-01 2016-12-08 Universite Du Maine Digital loudspeaker
US10484765B2 (en) 2015-06-01 2019-11-19 Universite Du Maine Digital loudspeaker

Also Published As

Publication number Publication date
JPH0439277B2 (en) 1992-06-29

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