JPS57158526A - Sound receiving point setting device of loudspeaker means - Google Patents

Sound receiving point setting device of loudspeaker means

Info

Publication number
JPS57158526A
JPS57158526A JP4524581A JP4524581A JPS57158526A JP S57158526 A JPS57158526 A JP S57158526A JP 4524581 A JP4524581 A JP 4524581A JP 4524581 A JP4524581 A JP 4524581A JP S57158526 A JPS57158526 A JP S57158526A
Authority
JP
Japan
Prior art keywords
reference point
motor
angle
axis
displaced
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
JP4524581A
Other languages
Japanese (ja)
Inventor
Toru Hayase
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP4524581A priority Critical patent/JPS57158526A/en
Publication of JPS57158526A publication Critical patent/JPS57158526A/en
Pending 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
    • G10K11/35—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams
    • G10K11/352—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams by moving the transducer
    • G10K11/355—Arcuate movement

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

PURPOSE:To measure an acoustic characteristic on the spherical surface by comparatively simple constitution and by an easy operation, by fixing a microphone directed to a reference point, to an arm whose angle can be displaced, and displacing an angle of a loudspeaker. CONSTITUTION:Height of a support 7 vertically provided on a supporting base 6 which has been provided on the side of a loudspeaker means 1 can be controlled by an operating piece 8. To the upper end part of the support 7, a motor 9 is installed, and by the motor 9, an L-arm 10 is displaced as to its angle. The axis of the motor 9 is positioned on a virtual axis 11 passing through a reference point 5. To the arm 10, a microphone 13 is fixed, on another virtual straight line 12 which is vertical to the virtual axis 11 and passes through the reference point 5. In this way, a base 16, that is to say, the loudspeaker means 1 passes through the reference point 5, is displaced as to its angle and is rotated by a motor 18 round an axis 17 vertical to the virtual straight lines 11, 12, and it is possible to measure an acoustic characteristic in an optional sound receiving point on a single spherical surface centering around the reference point 5 by driving the motors 9, 18.
JP4524581A 1981-03-26 1981-03-26 Sound receiving point setting device of loudspeaker means Pending JPS57158526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4524581A JPS57158526A (en) 1981-03-26 1981-03-26 Sound receiving point setting device of loudspeaker means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4524581A JPS57158526A (en) 1981-03-26 1981-03-26 Sound receiving point setting device of loudspeaker means

Publications (1)

Publication Number Publication Date
JPS57158526A true JPS57158526A (en) 1982-09-30

Family

ID=12713868

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4524581A Pending JPS57158526A (en) 1981-03-26 1981-03-26 Sound receiving point setting device of loudspeaker means

Country Status (1)

Country Link
JP (1) JPS57158526A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2725866A1 (en) * 1994-10-13 1996-04-19 Muller Johannes Rotary loudspeaker platform for more realistic listening conditions, e.g. in concert hall
CN109323756A (en) * 2018-09-07 2019-02-12 江苏中聚检测服务有限公司 A kind of device for noise radiation detection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2725866A1 (en) * 1994-10-13 1996-04-19 Muller Johannes Rotary loudspeaker platform for more realistic listening conditions, e.g. in concert hall
CN109323756A (en) * 2018-09-07 2019-02-12 江苏中聚检测服务有限公司 A kind of device for noise radiation detection
CN109323756B (en) * 2018-09-07 2020-09-18 江苏中聚检测服务有限公司 Device for detecting noise radiation

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