JPS5595500A - Acoustic unit utilizing ultrasonic wave - Google Patents

Acoustic unit utilizing ultrasonic wave

Info

Publication number
JPS5595500A
JPS5595500A JP223479A JP223479A JPS5595500A JP S5595500 A JPS5595500 A JP S5595500A JP 223479 A JP223479 A JP 223479A JP 223479 A JP223479 A JP 223479A JP S5595500 A JPS5595500 A JP S5595500A
Authority
JP
Japan
Prior art keywords
vibration
vibration frequency
input signal
amplitude
ultrasonic
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
JP223479A
Other languages
Japanese (ja)
Inventor
Akira Sasaki
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 JP223479A priority Critical patent/JPS5595500A/en
Publication of JPS5595500A publication Critical patent/JPS5595500A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)

Abstract

PURPOSE:To make it possible to enjoy a stereophonic playback sound without reference to the resonance of a speaker box, etc., and the size of a room, by making use of interferential vibrations caused between not less than two ultrasonic vibrations. CONSTITUTION:The vibration of a reference vibration frequency varying in amplitude with an input signal is called modulated ultrasonic vibration type A and a vibration frequency lower or higher than the reference vibration frequency by the vibration frequency of the input signal is used; and the vibration varying in amplitude corresponding to the amplitude variation of the input signal is called modulated ultrasonic vibration type B to use the reference vibration frequency, and constant- amplitude vibration having no relation to the input signal is called unmodulated ultrasonic vibration type C. Not less than two out of three kind of ultrasonic vibrations, types A, B and C, are caused from speaker SP to generate interferential vibration by a difference in vibration frequency. Consequently, a stereophonic sound can be reproduced.
JP223479A 1979-01-16 1979-01-16 Acoustic unit utilizing ultrasonic wave Pending JPS5595500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP223479A JPS5595500A (en) 1979-01-16 1979-01-16 Acoustic unit utilizing ultrasonic wave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP223479A JPS5595500A (en) 1979-01-16 1979-01-16 Acoustic unit utilizing ultrasonic wave

Publications (1)

Publication Number Publication Date
JPS5595500A true JPS5595500A (en) 1980-07-19

Family

ID=11523656

Family Applications (1)

Application Number Title Priority Date Filing Date
JP223479A Pending JPS5595500A (en) 1979-01-16 1979-01-16 Acoustic unit utilizing ultrasonic wave

Country Status (1)

Country Link
JP (1) JPS5595500A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63236500A (en) * 1987-03-25 1988-10-03 Takenaka Komuten Co Ltd Device for limiting broadcasting space
JPH04259877A (en) * 1991-02-14 1992-09-16 Nissan Motor Co Ltd Transmitting device of information
KR20010083856A (en) * 2001-07-04 2001-09-03 신찬영 Alpha wave activator using natural ultrasonic waves
CN109803199A (en) * 2019-01-28 2019-05-24 合肥京东方光电科技有限公司 The vocal technique of sounding device, display system and sounding device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63236500A (en) * 1987-03-25 1988-10-03 Takenaka Komuten Co Ltd Device for limiting broadcasting space
JPH04259877A (en) * 1991-02-14 1992-09-16 Nissan Motor Co Ltd Transmitting device of information
KR20010083856A (en) * 2001-07-04 2001-09-03 신찬영 Alpha wave activator using natural ultrasonic waves
CN109803199A (en) * 2019-01-28 2019-05-24 合肥京东方光电科技有限公司 The vocal technique of sounding device, display system and sounding device
US10986459B2 (en) 2019-01-28 2021-04-20 Hefei Boe Optoelectronics Technology Co., Ltd. Sound production device, display system, and sound production method

Similar Documents

Publication Publication Date Title
GB1471297A (en) Electrodynamic type electroacoustic transducer
NO872309D0 (en) MONOLITIC STEREOPHONIC SOUND SCREEN.
FR2441980A1 (en) ELECTRO-ACOUSTIC TRANSDUCER
JPS62296698A (en) Parametric speaker
JPS5595500A (en) Acoustic unit utilizing ultrasonic wave
US3145265A (en) Sound reproduction apparatus
US6714653B1 (en) Sound capturing method and device
JPS55121793A (en) Speaker system
JPH08149592A (en) Parametric speaker controller
JPS53120401A (en) Sound reproducing system
SU667178A3 (en) Sound reproduction device
FR2380704A7 (en) Acoustic enclosure for loudspeakers - has mechanical filters preventing transmission of vibrations between loudspeaker and casing
US2923371A (en) Speaker
JPS56126397A (en) Speaker system
FR2260916A1 (en) Loudspeaker directional enclosure - has diaphragm forming two separate parts for low and high frequency sounds
FR2422309A1 (en) Loudspeaker system reproducing bass to treble frequencies - has membranes acceleration measured to provide feedback for loudspeaker and power amplifier
USRE29360E (en) System for recording and/or reproducing four channel signals on a record disc
JPS56111400A (en) Sound field expanding apparatus
JPS6340958Y2 (en)
JPS5364501A (en) Acoustic device
JPS5772497A (en) Piezoelectric speaker
US1735863A (en) Radial resonator with bass-note propagator
JPS54160226A (en) Multiway speaker system
SU884168A1 (en) Acoustic system
JPH0129901Y2 (en)