WO1999005886A1 - Hybrid loudspeaker system - Google Patents

Hybrid loudspeaker system Download PDF

Info

Publication number
WO1999005886A1
WO1999005886A1 PCT/JP1997/004008 JP9704008W WO9905886A1 WO 1999005886 A1 WO1999005886 A1 WO 1999005886A1 JP 9704008 W JP9704008 W JP 9704008W WO 9905886 A1 WO9905886 A1 WO 9905886A1
Authority
WO
WIPO (PCT)
Prior art keywords
tweeter
woofer
loudspeaker
characteristic
sound pressure
Prior art date
Application number
PCT/JP1997/004008
Other languages
French (fr)
Japanese (ja)
Inventor
Shigeru Tsutsumi
Original Assignee
Shinsei Corporation
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 Shinsei Corporation filed Critical Shinsei Corporation
Priority to AU47273/97A priority Critical patent/AU4727397A/en
Publication of WO1999005886A1 publication Critical patent/WO1999005886A1/en

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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

A hybrid loudspeaker system which can reproduce sounds with high fidelity over the full audio frequency band without using any dividing network by using a loudspeaker using a piezoelectric vibrator as a tweeter and a well known dynamic loudspeaker as a woofer. The tweeter has a structure in which piezoelectric vibrators are arranged in a layered state to achieve the same sound pressure level as the average sound pressure level of the woofer and has a flat sound pressure level characteristic in the frequency band of 500-20,000 Hz. The tweeter, in addition, has a characteristic that its impedance drops as the frequency becomes higher. The dynamic loudspeaker used as a woofer for producing low-pitched sounds has a characteristic that its impedance drops as the frequency becomes lower. Thus, a hybrid loudspeaker system can be constituted without using any dividing network by connecting the tweeter and woofer in parallel.
PCT/JP1997/004008 1997-07-23 1997-11-04 Hybrid loudspeaker system WO1999005886A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU47273/97A AU4727397A (en) 1997-07-23 1997-11-04 Hybrid loudspeaker system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JPPCT/JP97/02550 1997-07-23
PCT/JP1997/002550 WO1999005885A1 (en) 1997-07-23 1997-07-23 Loudspeaker system

Publications (1)

Publication Number Publication Date
WO1999005886A1 true WO1999005886A1 (en) 1999-02-04

Family

ID=14180864

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/JP1997/002550 WO1999005885A1 (en) 1997-07-23 1997-07-23 Loudspeaker system
PCT/JP1997/004008 WO1999005886A1 (en) 1997-07-23 1997-11-04 Hybrid loudspeaker system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/002550 WO1999005885A1 (en) 1997-07-23 1997-07-23 Loudspeaker system

Country Status (2)

Country Link
AU (2) AU3634097A (en)
WO (2) WO1999005885A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023283784A1 (en) * 2021-07-12 2023-01-19 天津大学 Piezoelectric mems loudspeaker system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56132892U (en) * 1980-03-10 1981-10-08
JPS5843097U (en) * 1981-09-18 1983-03-23 三洋電機株式会社 piezoelectric vibrator
JPS59146296A (en) * 1983-02-08 1984-08-22 Murata Mfg Co Ltd Driving method of piezoelectric speaker
JPH02213300A (en) * 1989-02-13 1990-08-24 Kaidou Seisakusho:Kk Composite piezoelectric vibrating element
JPH0372799A (en) * 1989-08-11 1991-03-27 Murata Mfg Co Ltd Piezoelectric speaker
JP3037167U (en) * 1996-10-24 1997-05-06 新世株式会社 Speaker

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52145215A (en) * 1976-05-28 1977-12-03 Nippon Gakki Seizo Kk Complex type speaker
JPS623984Y2 (en) * 1979-10-09 1987-01-29
JPS616713A (en) * 1984-06-20 1986-01-13 Iwatsu Electric Co Ltd Fixing temperature control device of photoengraving device
JPS62159096U (en) * 1986-03-31 1987-10-08

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56132892U (en) * 1980-03-10 1981-10-08
JPS5843097U (en) * 1981-09-18 1983-03-23 三洋電機株式会社 piezoelectric vibrator
JPS59146296A (en) * 1983-02-08 1984-08-22 Murata Mfg Co Ltd Driving method of piezoelectric speaker
JPH02213300A (en) * 1989-02-13 1990-08-24 Kaidou Seisakusho:Kk Composite piezoelectric vibrating element
JPH0372799A (en) * 1989-08-11 1991-03-27 Murata Mfg Co Ltd Piezoelectric speaker
JP3037167U (en) * 1996-10-24 1997-05-06 新世株式会社 Speaker

Also Published As

Publication number Publication date
AU4727397A (en) 1999-02-16
WO1999005885A1 (en) 1999-02-04
AU3634097A (en) 1999-02-16

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