CN2688005Y - Voice direction propagation device - Google Patents
Voice direction propagation device Download PDFInfo
- Publication number
- CN2688005Y CN2688005Y CN 03276391 CN03276391U CN2688005Y CN 2688005 Y CN2688005 Y CN 2688005Y CN 03276391 CN03276391 CN 03276391 CN 03276391 U CN03276391 U CN 03276391U CN 2688005 Y CN2688005 Y CN 2688005Y
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- array
- power amplifier
- sound
- ultrasonic
- amplifier driver
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- Expired - Lifetime
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- Transducers For Ultrasonic Waves (AREA)
Abstract
The utility model relates to a voice directional propagation device, belonging to the field of the acoustoelectric device, comprising a processing circuit, a power amplifier driver and ultrasonic transducers. The ultrasonic transducers are arranged in the same direction to form an array, fixed on a printed board, and connected to the power amplifier driver via a conductor. The sound directional propagation device can realize the propagation of the directional sound beam in an angle of few degrees, with a small area sound array. In the device, the beams formed by a plurality of ultrasonic transducer with good directivity superimpose each other to form ultrasonic beams with high directionality to be propagated forward.
Description
Technical field
The utility model belongs to acoustic-electric device field, specially refers to a kind of device that is used for voice directional spreading.
Technical background
The domestic comparatively ripe at present device that is used for voice directional spreading, existing more product, common have a sound column, it is to utilize a plurality of common high-fidelity loudspeakers to form a line, come the sonorific directive property of raising system like this, but this system just makes moderate progress to the directive property of common single loud speaker, the sound beam angle that seeks out generation is in the several years scope, needing a lot of ventional loudspeakers to form array just can accomplish, the diameter of this array needs tens meters, could realize the directed requirement in the several years scope, such huge monster practical value of being good at, and in many instances, the direction propagation of sound is again very necessary, and this research group is such needs, endeavours to work out the little sound array of employing area, realize the propagation of direct sound, the acoustic wave beam angle is controlled within the several years scope.
Summary of the invention
The utility model technical issues that need to address, be in the prior art, the sound beam angle that seeks out generation is propagated within the several years scope, just need the bulky array of raising one's voice, manufacturing, use all are absorbed in inconvenience, in order to overcome these defectives, just need the device of a kind of voice directional spreading of redesign, make it in the acoustic array device of small size, realize the propagation of direct sound.The purpose of this utility model, rely on following technical scheme to realize, a kind of voice directional spreading device, comprise treatment circuit, power amplifier driver, ultrasonic transducer, it is characterized in that, many ultrasonic transducers are pressed equidirectional form array, be fixed in the printed board, be connected on the power amplifier driver by conductor.Described many ultrasonic transducers, its number select can be from several to several ten thousand scope, the array shape that is made up can be rectangle, circle, polygon.The beneficial effects of the utility model are that the wave beam of the acoustic array realization direct sound that the enough areas of this direction propagation device energy are less is propagated in the angular range in several years.In this device, the wave beam mutual superposition of a plurality of directivity ultrasonic transducer formation preferably forms the strong ultrasound beamformer of pointing capability.In use, modulation there is the ultrasonic signal of audible signal, drives ultrasonic transducer,, and propagate forward with the directive property of height because the nonlinear effect of air demodulates sub-audible sound by power amplifier.
Description of drawings
Fig. 1 is this direction propagation apparatus structure block diagram.
Fig. 2 is a compact arranged ultrasonic transducer series in printed board.
Embodiment
With reference to Fig. 1, Fig. 2, represent the structured flowchart of this voice directional spreading device and the array of a plurality of compact arranged ultrasonic transducers, wherein 1 is processor, it act as provides power drive; Be connected to printed board 3 by feeder line 2,4 is single ultrasonic transducer, processor 1 has modulation the ultrasonic signal of audible signal to drive a plurality of air transducer arrays 5 that are welded in the printed board 3 by power amplifier, launch a branch of the ultrasonic of audio signal that carry then, by non-linear demodulation, demodulate sub-audible sound.
Claims (2)
1. a voice directional spreading device comprises treatment circuit, power amplifier driver, ultrasonic transducer, it is characterized in that, many ultrasonic transducers is pressed equidirectional form array, is fixed in the printed board, is connected on the power amplifier driver by conductor.
2. a kind of voice directional spreading device according to claim 1 is characterized in that, described many ultrasonic transducers, its number select can be from several to several ten thousand scope, the array shape that is made up can be rectangle, circle, polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03276391 CN2688005Y (en) | 2003-08-19 | 2003-08-19 | Voice direction propagation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03276391 CN2688005Y (en) | 2003-08-19 | 2003-08-19 | Voice direction propagation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2688005Y true CN2688005Y (en) | 2005-03-23 |
Family
ID=34661260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03276391 Expired - Lifetime CN2688005Y (en) | 2003-08-19 | 2003-08-19 | Voice direction propagation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2688005Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1905600B (en) * | 2005-07-26 | 2011-05-18 | 中国科学院声学研究所 | Method and apparatus for eliminating acoustics echo in handless telephone communication |
| CN102767991A (en) * | 2012-07-30 | 2012-11-07 | 王路 | Sound wave weapon |
| CN104536002A (en) * | 2014-12-15 | 2015-04-22 | 河南师范大学 | Integrated voice directional propagation device with target detection function |
| CN104601784A (en) * | 2015-01-26 | 2015-05-06 | 电子科技大学 | Anti-eavesdropping device |
| CN104683907A (en) * | 2015-01-26 | 2015-06-03 | 电子科技大学 | Directional transmission device |
| CN101682807B (en) * | 2007-06-08 | 2015-11-25 | 皇家飞利浦电子股份有限公司 | Comprise beamforming system and the method thereof of transducer assemblies |
| CN106076794A (en) * | 2016-08-24 | 2016-11-09 | 复旦大学 | Same phase close-packed array formula ultrasonic transmitting element |
-
2003
- 2003-08-19 CN CN 03276391 patent/CN2688005Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1905600B (en) * | 2005-07-26 | 2011-05-18 | 中国科学院声学研究所 | Method and apparatus for eliminating acoustics echo in handless telephone communication |
| CN101682807B (en) * | 2007-06-08 | 2015-11-25 | 皇家飞利浦电子股份有限公司 | Comprise beamforming system and the method thereof of transducer assemblies |
| CN102767991A (en) * | 2012-07-30 | 2012-11-07 | 王路 | Sound wave weapon |
| CN104536002A (en) * | 2014-12-15 | 2015-04-22 | 河南师范大学 | Integrated voice directional propagation device with target detection function |
| CN104601784A (en) * | 2015-01-26 | 2015-05-06 | 电子科技大学 | Anti-eavesdropping device |
| CN104683907A (en) * | 2015-01-26 | 2015-06-03 | 电子科技大学 | Directional transmission device |
| CN104601784B (en) * | 2015-01-26 | 2017-06-27 | 电子科技大学 | A kind of anti-eavesdrop device |
| CN104683907B (en) * | 2015-01-26 | 2017-09-29 | 电子科技大学 | A kind of directional transmissions device |
| CN106076794A (en) * | 2016-08-24 | 2016-11-09 | 复旦大学 | Same phase close-packed array formula ultrasonic transmitting element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130819 Granted publication date: 20050323 |