EP1051058A3 - Piezoelectric audio device and method for sound production - Google Patents

Piezoelectric audio device and method for sound production Download PDF

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Publication number
EP1051058A3
EP1051058A3 EP00106906A EP00106906A EP1051058A3 EP 1051058 A3 EP1051058 A3 EP 1051058A3 EP 00106906 A EP00106906 A EP 00106906A EP 00106906 A EP00106906 A EP 00106906A EP 1051058 A3 EP1051058 A3 EP 1051058A3
Authority
EP
European Patent Office
Prior art keywords
response
audio device
sound production
compensate
order
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.)
Withdrawn
Application number
EP00106906A
Other languages
German (de)
French (fr)
Other versions
EP1051058A2 (en
Inventor
Juha Backman
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.)
Nokia Oyj
Original Assignee
Nokia Oyj
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 Nokia Oyj filed Critical Nokia Oyj
Publication of EP1051058A2 publication Critical patent/EP1051058A2/en
Publication of EP1051058A3 publication Critical patent/EP1051058A3/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers

Abstract

An arrangement (1) to improve the sound quality of a piezoelectric element actuating element (AE). A sensing element (ME) is attached to the piezoelectric element to supply an electric response to movement of the element when the plate vibrates producing a sound. The response is electrically filtered in order to compensate said mechanical resonance frequency band for stabilisation of said first signal. The filtered response is inverting summed by a summation node (SN) with the audio signal to be reproduced in order to compensate the otherwise exaggerated amplitude at these resonance frequencies.
EP00106906A 1999-05-07 2000-03-31 Piezoelectric audio device and method for sound production Withdrawn EP1051058A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI991061A FI114079B (en) 1999-05-07 1999-05-07 Piezoelectric audio device and method of sound production
FI991061 1999-05-07

Publications (2)

Publication Number Publication Date
EP1051058A2 EP1051058A2 (en) 2000-11-08
EP1051058A3 true EP1051058A3 (en) 2004-09-29

Family

ID=8554626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00106906A Withdrawn EP1051058A3 (en) 1999-05-07 2000-03-31 Piezoelectric audio device and method for sound production

Country Status (3)

Country Link
EP (1) EP1051058A3 (en)
JP (1) JP2000333288A (en)
FI (1) FI114079B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015114242A1 (en) * 2015-08-27 2017-03-02 USound GmbH MEMS speaker with position sensor
DE102015114245A1 (en) * 2015-08-27 2017-03-02 USound GmbH MEMS sound transducer with closed control system
GB2542119B (en) * 2015-09-07 2018-08-29 Jaguar Land Rover Ltd Multi-function transducer assembly and system
GB2547919B (en) * 2016-03-02 2019-08-21 Arm Ip Ltd Proximity authentication protocol
EP3907734B1 (en) 2016-11-14 2022-11-02 Goodix Technology (HK) Company Limited Linear resonant actuator controller
KR102570630B1 (en) * 2018-11-01 2023-08-25 주식회사 아모텍 Proximity sensor for bezel-less type electronic device
CN113365192A (en) * 2020-03-06 2021-09-07 华为技术有限公司 Piezoelectric speaker and electronic apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860183A (en) * 1954-02-01 1958-11-11 Conrad Ivan Willard Sound reproducing system
GB1031145A (en) * 1963-06-26 1966-05-25 Philips Electronic Associated Improvements in or relating to audio-frequency amplifiers
JPS59209000A (en) * 1983-05-13 1984-11-27 Shigeru Tsutsumi Audiphone
US4709360A (en) * 1985-11-12 1987-11-24 Sparton Corporation Hydrophone transducer with negative feedback system
US5488954A (en) * 1994-09-09 1996-02-06 Georgia Tech Research Corp. Ultrasonic transducer and method for using same
FR2755813A1 (en) * 1996-11-14 1998-05-15 Alsthom Cge Alcatel HANDSET

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860183A (en) * 1954-02-01 1958-11-11 Conrad Ivan Willard Sound reproducing system
GB1031145A (en) * 1963-06-26 1966-05-25 Philips Electronic Associated Improvements in or relating to audio-frequency amplifiers
JPS59209000A (en) * 1983-05-13 1984-11-27 Shigeru Tsutsumi Audiphone
US4709360A (en) * 1985-11-12 1987-11-24 Sparton Corporation Hydrophone transducer with negative feedback system
US5488954A (en) * 1994-09-09 1996-02-06 Georgia Tech Research Corp. Ultrasonic transducer and method for using same
FR2755813A1 (en) * 1996-11-14 1998-05-15 Alsthom Cge Alcatel HANDSET

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0090, no. 75 (E - 306) 4 April 1985 (1985-04-04) *

Also Published As

Publication number Publication date
EP1051058A2 (en) 2000-11-08
FI114079B (en) 2004-07-30
FI991061A (en) 2000-11-08
JP2000333288A (en) 2000-11-30
FI991061A0 (en) 1999-05-07

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