JPH09266599A - デジタルスピーカ - Google Patents

デジタルスピーカ

Info

Publication number
JPH09266599A
JPH09266599A JP11108396A JP11108396A JPH09266599A JP H09266599 A JPH09266599 A JP H09266599A JP 11108396 A JP11108396 A JP 11108396A JP 11108396 A JP11108396 A JP 11108396A JP H09266599 A JPH09266599 A JP H09266599A
Authority
JP
Japan
Prior art keywords
concentric
sound
speaker
electrode
magnitude
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
JP11108396A
Other languages
English (en)
Inventor
Takeshi Shiraiwa
健 白岩
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP11108396A priority Critical patent/JPH09266599A/ja
Publication of JPH09266599A publication Critical patent/JPH09266599A/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

(57)【要約】 【目的】音声、音響、音楽などの電気信号をデジタル信
号のまま直接出力するスピーカである。 【構成】圧電効果をもつ誘電体上に電極を設ける。片面
は同心円状とし、もう片面は単円とする。同心円の個々
の円についてはそれぞれ加えられる電圧、電流の大き
さ、担当するビットの桁の大きさに応じて面積を調整
し、それぞれの同心円から出力されるべき音の大きさを
決定する。

Description

【発明の詳細な説明】 この発明は音声、音響、音楽などの電気信号をデジタル
信号のまま直接出力するスピーカである。従来のスピー
カはアナログ信号を通常コイル式の駆動部に加え駆動す
るものが主流であった。従来の方法だと過渡特性を向上
させるのが困難であり、デジタル処理で雑音が入り込ま
ない処理をおこなっても最終的にスピーカによる出力段
で音に色付けがされてしまいこの点が問題であった。本
発明ではアナログ信号ではなくデジタル信号を直接スピ
ーカに加えることにより従来の問題点を解決したもので
ある。以下にそれを説明すると、 （イ）図１で、電極１は同心円状に配置されている。
（ロ）同心円状の電極１のそれぞれは電気的に絶縁され
ている。
（ハ）同心円状の電極１のそれぞれは２進数の数値のビ
ットに応じた電圧が加えられる。
（ニ）電極１の各同心円はそれぞれその円が受け持つ２
進数のビットの桁の大きさに応じて面積が決まる。また
は、加える電気信号の強さにより、各ビットの音量を調
整してもよい。
（ホ）電極２は１つの面になっている。
（ヘ）電極１、２は金属などの導電体で出来ている。
（ト）電極は、蒸着、メッキ、ＭＢＥ、スパッタリン
グ、液相エピタキシーなどの、一般的な金属薄膜の形成
法で形成してもよい。
（チ）誘電体は圧電効果をもった誘電体を用いる。
【図面の簡単な説明】
【図１】本発明の正面図
【図２】本発明の断面図
【符号の説明】
１は電極１ ２は誘電体 ３は電極２ Ａ−Ａ’
は断面を表す直線

Claims (1)

    【特許請求の範囲】
  1. 【請求項１】音声、音響、音楽などの電気信号をデジタ
    ル信号のまま直接出力するスピーカ。
JP11108396A 1996-03-27 1996-03-27 デジタルスピーカ Pending JPH09266599A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11108396A JPH09266599A (ja) 1996-03-27 1996-03-27 デジタルスピーカ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11108396A JPH09266599A (ja) 1996-03-27 1996-03-27 デジタルスピーカ

Publications (1)

Publication Number Publication Date
JPH09266599A true JPH09266599A (ja) 1997-10-07

Family

ID=14551960

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11108396A Pending JPH09266599A (ja) 1996-03-27 1996-03-27 デジタルスピーカ

Country Status (1)

Country Link
JP (1) JPH09266599A (ja)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8085964B2 (en) 2006-05-22 2011-12-27 Audio Pixels Ltd. Apparatus and methods for generating pressure waves
US8126163B2 (en) 2006-05-22 2012-02-28 Audio Pixels Ltd. Volume and tone control in direct digital speakers
US8457338B2 (en) 2006-05-22 2013-06-04 Audio Pixels Ltd. Apparatus and methods for generating pressure waves
US8780673B2 (en) 2007-11-21 2014-07-15 Audio Pixels Ltd. Digital speaker apparatus
US9391541B2 (en) 2010-03-11 2016-07-12 Audio Pixels Ltd. Electrostatic parallel plate actuators whose moving elements are driven only by electrostatic force and methods useful in conjunction therewith
US9425708B2 (en) 2010-11-26 2016-08-23 Audio Pixels Ltd. Apparatus and methods for individual addressing and noise reduction in actuator arrays
US9880533B2 (en) 2012-05-25 2018-01-30 Audio Pixels Ltd. System, a method and a computer program product for controlling a group of actuator arrays for producing a physical effect
US10007244B2 (en) 2012-05-25 2018-06-26 Audio Pixels Ltd. System, a method and a computer program product for controlling a set of actuator elements
US10021473B2 (en) 2015-05-20 2018-07-10 Dai-Ichi Seiko Co., Ltd. Digital speaker, speaker system, and earphones
US10104477B2 (en) 2015-05-30 2018-10-16 Dai-Ichi Seiko Co., Ltd. Speaker for generating sound based on digital signal
US10520601B2 (en) 2015-04-15 2019-12-31 Audio Pixels Ltd. Methods and systems for detecting at least the position of an object in space

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8085964B2 (en) 2006-05-22 2011-12-27 Audio Pixels Ltd. Apparatus and methods for generating pressure waves
US8126163B2 (en) 2006-05-22 2012-02-28 Audio Pixels Ltd. Volume and tone control in direct digital speakers
US8374056B2 (en) 2006-05-22 2013-02-12 Audio Pixels Ltd. Direct digital speaker apparatus having a desired directivity pattern
US8457338B2 (en) 2006-05-22 2013-06-04 Audio Pixels Ltd. Apparatus and methods for generating pressure waves
EP3525483A1 (en) 2007-11-21 2019-08-14 Audio Pixels Ltd. Improved speaker apparatus and methods useful in conjuction therewith
EP2846557A1 (en) 2007-11-21 2015-03-11 Audio Pixels Ltd. Improved speaker apparatus
US9445170B2 (en) 2007-11-21 2016-09-13 Audio Pixels Ltd. Speaker apparatus and methods useful in conjunction therewith
US9497526B2 (en) 2007-11-21 2016-11-15 Audio Pixels Ltd. Speaker apparatus and methods useful in conjunction therewith
US8780673B2 (en) 2007-11-21 2014-07-15 Audio Pixels Ltd. Digital speaker apparatus
US11139772B2 (en) 2010-03-11 2021-10-05 Audio Pixels Ltd. Electrostatic parallel plate actuators whose moving elements are driven only by electrostatic force and methods useful in conjunction therewith
US9391541B2 (en) 2010-03-11 2016-07-12 Audio Pixels Ltd. Electrostatic parallel plate actuators whose moving elements are driven only by electrostatic force and methods useful in conjunction therewith
US10554166B2 (en) 2010-03-11 2020-02-04 Audi Pixels Ltd. Electrostatic parallel plate actuators whose moving elements are driven only by electrostatic force and methods useful in conjunction therewith
US9986343B2 (en) 2010-11-26 2018-05-29 Audio Pixels Ltd. Apparatus and methods for individual addressing and noise reduction in actuator arrays
US9425708B2 (en) 2010-11-26 2016-08-23 Audio Pixels Ltd. Apparatus and methods for individual addressing and noise reduction in actuator arrays
US10007244B2 (en) 2012-05-25 2018-06-26 Audio Pixels Ltd. System, a method and a computer program product for controlling a set of actuator elements
US10642240B2 (en) 2012-05-25 2020-05-05 Audio Pixels Ltd. System, a method and a computer program product for controlling a set of actuator elements
US9880533B2 (en) 2012-05-25 2018-01-30 Audio Pixels Ltd. System, a method and a computer program product for controlling a group of actuator arrays for producing a physical effect
US10503136B2 (en) 2012-05-25 2019-12-10 Audio Pixels Ltd. System, a method and a computer program product for controlling a set of actuator elements
US10520601B2 (en) 2015-04-15 2019-12-31 Audio Pixels Ltd. Methods and systems for detecting at least the position of an object in space
US10021473B2 (en) 2015-05-20 2018-07-10 Dai-Ichi Seiko Co., Ltd. Digital speaker, speaker system, and earphones
US10104477B2 (en) 2015-05-30 2018-10-16 Dai-Ichi Seiko Co., Ltd. Speaker for generating sound based on digital signal

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