CA2022002C - Acoustic apparatus - Google Patents

Acoustic apparatus

Info

Publication number
CA2022002C
CA2022002C CA 2022002 CA2022002A CA2022002C CA 2022002 C CA2022002 C CA 2022002C CA 2022002 CA2022002 CA 2022002 CA 2022002 A CA2022002 A CA 2022002A CA 2022002 C CA2022002 C CA 2022002C
Authority
CA
Canada
Prior art keywords
sounds
reflectors
focus
reflector
sound
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.)
Expired - Fee Related
Application number
CA 2022002
Other languages
English (en)
French (fr)
Other versions
CA2022002A1 (en
Inventor
Hiroshi Ono
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.)
GEN ENGINEERING Co Ltd
Original Assignee
GEN ENGINEERING 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
Priority claimed from JP1202601A external-priority patent/JPH0832113B2/ja
Priority claimed from JP1202602A external-priority patent/JP2542563B2/ja
Priority claimed from JP2107441A external-priority patent/JPH046599A/ja
Application filed by GEN ENGINEERING Co Ltd filed Critical GEN ENGINEERING Co Ltd
Publication of CA2022002A1 publication Critical patent/CA2022002A1/en
Application granted granted Critical
Publication of CA2022002C publication Critical patent/CA2022002C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
CA 2022002 1989-08-04 1990-07-26 Acoustic apparatus Expired - Fee Related CA2022002C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP1202601A JPH0832113B2 (ja) 1989-08-04 1989-08-04 補聴装置
JP01-202601 1989-08-04
JP01-202602 1989-08-04
JP1202602A JP2542563B2 (ja) 1989-08-04 1989-08-04 音響装置
JP02-107441 1990-04-25
JP2107441A JPH046599A (ja) 1990-04-25 1990-04-25 音響装置

Publications (2)

Publication Number Publication Date
CA2022002A1 CA2022002A1 (en) 1991-02-05
CA2022002C true CA2022002C (en) 1999-10-05

Family

ID=27310975

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2022002 Expired - Fee Related CA2022002C (en) 1989-08-04 1990-07-26 Acoustic apparatus

Country Status (3)

Country Link
EP (1) EP0411671B1 (de)
CA (1) CA2022002C (de)
DE (1) DE69032304T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9084047B2 (en) 2013-03-15 2015-07-14 Richard O'Polka Portable sound system
US10149058B2 (en) 2013-03-15 2018-12-04 Richard O'Polka Portable sound system
CN113785597A (zh) 2019-05-13 2021-12-10 索尼集团公司 声学反射器、扬声器单元和椅子
CN114991327B (zh) * 2022-06-30 2023-04-14 中国矿业大学 隔声降噪装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1782801A (en) * 1929-02-16 1930-11-25 Baehn Frederick Radio loud-speaker
US2643727A (en) * 1950-01-31 1953-06-30 Elipson S A Sound transmitting device with an ellipsoidal reflector
DE2508494A1 (de) * 1975-02-27 1976-09-02 Hansrichard Dipl Phys D Schulz Anordnung zum fokussieren von elektromagnetischen oder mechanischen wellen
US4151584A (en) * 1977-03-14 1979-04-24 Electro Controls Inc. Light-collecting reflector
US4421200A (en) * 1981-12-16 1983-12-20 Ferralli Michael W Elliptically shaped transducer enclosure

Also Published As

Publication number Publication date
DE69032304D1 (de) 1998-06-18
DE69032304T2 (de) 1999-02-04
EP0411671A2 (de) 1991-02-06
EP0411671B1 (de) 1998-05-13
EP0411671A3 (en) 1991-10-09
CA2022002A1 (en) 1991-02-05

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed