JPS6239599B2 - - Google Patents

Info

Publication number
JPS6239599B2
JPS6239599B2 JP11897679A JP11897679A JPS6239599B2 JP S6239599 B2 JPS6239599 B2 JP S6239599B2 JP 11897679 A JP11897679 A JP 11897679A JP 11897679 A JP11897679 A JP 11897679A JP S6239599 B2 JPS6239599 B2 JP S6239599B2
Authority
JP
Japan
Prior art keywords
cylindrical
vibrator
vibration
oscillator
shade
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
Application number
JP11897679A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5643897A (en
Inventor
Akira Kameyama
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.)
NEC Corp
Original Assignee
Nippon Electric 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
Application filed by Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP11897679A priority Critical patent/JPS5643897A/ja
Publication of JPS5643897A publication Critical patent/JPS5643897A/ja
Publication of JPS6239599B2 publication Critical patent/JPS6239599B2/ja
Granted 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)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)
JP11897679A 1979-09-17 1979-09-17 Transmitter-receiver with reflector Granted JPS5643897A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11897679A JPS5643897A (en) 1979-09-17 1979-09-17 Transmitter-receiver with reflector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11897679A JPS5643897A (en) 1979-09-17 1979-09-17 Transmitter-receiver with reflector

Publications (2)

Publication Number Publication Date
JPS5643897A JPS5643897A (en) 1981-04-22
JPS6239599B2 true JPS6239599B2 (en]) 1987-08-24

Family

ID=14749933

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11897679A Granted JPS5643897A (en) 1979-09-17 1979-09-17 Transmitter-receiver with reflector

Country Status (1)

Country Link
JP (1) JPS5643897A (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112702669B (zh) * 2020-12-21 2023-04-07 西安讯飞超脑信息科技有限公司 拾音设备、方法、装置、系统和存储介质

Also Published As

Publication number Publication date
JPS5643897A (en) 1981-04-22

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