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

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods 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
    • G10K11/18Methods or devices for transmitting, conducting or directing sound
    • G10K11/26Sound-focusing or directing, e.g. scanning
    • G10K11/35Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams
    • G10K11/352Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams by moving the transducer
    • G10K11/355Arcuate 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

Similar Documents

Publication Publication Date Title
KR880003836A (en) Vibrating propeller type aerator device and method
EP0160951A3 (en) Improvement of screw tightening apparatus
GB862561A (en) Improvements in or relating to ultrasonic test apparatus
JPS57158526A (en) Sound receiving point setting device of loudspeaker means
ES406447A1 (en) Aeration device for the surface aeration of liquids
ES429394A2 (en) Process for machining a workpiece and apparatus for orienting and positioning a workpiece for machining
ES410032A1 (en) Position defining panel installer
EP0123875A3 (en) Adjustable pedestal for elevated floors
JPS57158527A (en) Sound receiving point setting device of loudspeaker means
ES320057A1 (en) Machine to fill the nozzles of the concrete pipes. (Machine-translation by Google Translate, not legally binding)
FR2451310A1 (en) Adjustable cycle saddle support - has saddle tube hook end clamped in socket of tilting core
JPS5817323A (en) Device for establishing sound receiving point of speaker means
FR2607586B1 (en) DEVICE FOR PNEUMATICALLY DETERMINING THE INTERIOR DIAMETER OF A CIRCULAR SECTION CONDUIT OF A TEST PANEL
CN109084934B (en) Swing angle control device of rotational inertia measuring instrument
JPS5863820A (en) Measuring device for acoustic power level
KR900003549Y1 (en) Bice
SE8004424L (en) ADJUSTABLE SUPPORT DEVICE
FR2289253A1 (en) Device for applying low frequency forces to buildings - has weight on support rotated about vert. axis at predetermined distance from it
GB1502493A (en) Support devices for mounting on bathtubs
ES287298U (en) Orientable support for audio, video and similar monitors (Machine-translation by Google Translate, not legally binding)
SE8302888L (en) SUSPENSION DEVICE FOR A HYDROMOTOR
SU1177667A1 (en) Device for fixing and tilting theodolite
JPS57194848A (en) Cubic block with turntable
SU1650335A1 (en) Device for vibration processing of melt in crystallizers
JPS57182131A (en) Device to set sound receiving point for speaker