JPS57158526A - Sound receiving point setting device of loudspeaker means - Google Patents
Sound receiving point setting device of loudspeaker meansInfo
- 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
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.
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)
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 |
-
1981
- 1981-03-26 JP JP4524581A patent/JPS57158526A/en active Pending
Cited By (3)
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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