JPS5789394A - Transmitter and receiver - Google Patents

Transmitter and receiver

Info

Publication number
JPS5789394A
JPS5789394A JP16613380A JP16613380A JPS5789394A JP S5789394 A JPS5789394 A JP S5789394A JP 16613380 A JP16613380 A JP 16613380A JP 16613380 A JP16613380 A JP 16613380A JP S5789394 A JPS5789394 A JP S5789394A
Authority
JP
Japan
Prior art keywords
vibrator pieces
switch circuit
transmission
transmitter
receiver
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
JP16613380A
Other languages
Japanese (ja)
Inventor
Kazuto Kobayashi
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 JP16613380A priority Critical patent/JPS5789394A/en
Publication of JPS5789394A publication Critical patent/JPS5789394A/en
Pending legal-status Critical Current

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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To suppress a subbeam to improve the directional pattern of the whole, by arranging plural vibrator pieces and inserting a switch circuit to vibrator pieces in one end or both ends to change the directional pattern for transmission and receiving. CONSTITUTION:At the transmission time, a switch circuit 4 is closed, and transmission pulses outputted from a transmitter 5 are converted from an electric signal to an acoustic output by vibrator pieces 31-3n joined in parallel and are radiated to the external. At the receiving time, the switch circuit 4 is opened, and vibrator pieces 31 and 3n in both ends are disconnected, and a voltage induced by rest vibrator pieces 32-3n-1 is sent to a receiver 6.
JP16613380A 1980-11-26 1980-11-26 Transmitter and receiver Pending JPS5789394A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16613380A JPS5789394A (en) 1980-11-26 1980-11-26 Transmitter and receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16613380A JPS5789394A (en) 1980-11-26 1980-11-26 Transmitter and receiver

Publications (1)

Publication Number Publication Date
JPS5789394A true JPS5789394A (en) 1982-06-03

Family

ID=15825639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16613380A Pending JPS5789394A (en) 1980-11-26 1980-11-26 Transmitter and receiver

Country Status (1)

Country Link
JP (1) JPS5789394A (en)

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