CN208015981U - Orient megaphone - Google Patents
Orient megaphone Download PDFInfo
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- CN208015981U CN208015981U CN201820013737.0U CN201820013737U CN208015981U CN 208015981 U CN208015981 U CN 208015981U CN 201820013737 U CN201820013737 U CN 201820013737U CN 208015981 U CN208015981 U CN 208015981U
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- module
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- megaphone
- orientation
- audio
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Abstract
The utility model is related to a kind of orientation megaphones, including：Shell；It is installed on the circuit board of the shell, circuit board includes control module, audio processing modules, the carrier module for being loaded into audio signal on ultrasonic wave for carrying out conversion process to audio signal, the audio processing modules are connect with the control module, the carrier module, and the carrier module is connect with the control module；Audio collection module is installed on the shell, connects the audio processing modules；And loud speaker, it is installed on the shell, connects the carrier module.Low-frequency sound wave is loaded on the strong ultrasonic wave of directive property by above-mentioned orientation megaphone by carrier module, above-mentioned low-frequency sound wave and ultrasonic wave are launched into the air after enhanced processing, air can gradual filter high-frequency ultrasonic wave, low-frequency sound wave travels to human ear and is heard by people, it realizes and orients transaudient purpose, propagation angle is narrow, and propagation distance is remote, environment resistant interference performance is strong, and it is good to be directed toward effect.
Description
Technical field
The utility model is related to stereo set technical fields, and in particular to a kind of orientation megaphone.
Background technology
In order to realize that the direction propagation to sound, people are realized usually using megaphone.Currently, existing megaphone is big
Use cone-shaped hood to adjust the wave surface of sound, to reach certain directional effect more.But sound is still sent out after leaving megaphone
It dissipates and propagates, directional effect is very limited, cannot achieve and orients the effect propagandaed directed to communicate to particular persons, and to realize preferably orientation effect
Fruit then needs the length for increasing the cover of megaphone so that megaphone volume becomes huge, inconvenient for use.
Utility model content
In view of this, it is necessary to provide a kind of orientation megaphones easy to use, directional effect is good.
A kind of orientation megaphone, including：
Shell；
Circuit board is installed at the shell, including control module, the audio for carrying out conversion process to audio signal
Reason module, for audio signal to be loaded into the carrier module on ultrasonic wave, the audio processing modules and the control module,
The carrier module connection, the carrier module are connect with the control module；
Audio collection module is installed on the shell, connects the audio processing modules；And
Loud speaker is installed on the shell, connects the carrier module.
Further, the audio processing modules include analog-to-digital conversion module and D/A converter module, the analog-to-digital conversion
Module connects the control module and the audio collection module, and the D/A converter module connects the control module and described
Carrier module.
Further, the audio collection module is microphone.
Further, the shell includes the first shell and second shell being connected with each other, and the first shell includes the
One end and the second end, the audio collection module are installed on first end, and the loud speaker is installed on the second end.
Further, the first shell and the second shell are cylindrical, and the first shell diameter is more than
The second shell.
Further, the orientation megaphone further includes the key-press module and power supply for being respectively connected to the control module
Module, the key-press module and the power module are installed on the second shell.
Further, the key-press module includes switch.
Further, the power module includes accumulator.
Further, the accumulator is lithium battery.
Further, the loud speaker is display loud speaker.
As it can be seen that low-frequency sound wave is loaded on the strong ultrasonic wave of directive property by above-mentioned orientation megaphone by carrier module, on
Low-frequency sound wave and ultrasonic wave is stated to be launched into after enhanced processing in the air, air can gradual filter high-frequency ultrasonic wave, all-bottom sound
Wave travels to human ear and is heard by people, realizes and orients transaudient purpose, and propagation angle is narrow, intensity of acoustic wave decaying unobvious；It propagates
Distance is remote, and environment resistant interference performance is strong, does not generate noise pollution to the environment other than range of propagandaing directed to communicate.
Description of the drawings
Fig. 1 is the structure diagram of the orientation megaphone of one embodiment of the utility model.
Fig. 2 is the structural schematic diagram of the orientation megaphone of one embodiment of the utility model.
Specific implementation mode
The utility model is described in detail below with reference to specific embodiments and the drawings.
Also referring to Fig. 1 and Fig. 2, a kind of orientation megaphone 100 of the utility model embodiment is shown, including：Shell
110；Circuit board 120, is installed on the shell 110, including control module 121, for carrying out conversion process to audio signal
Audio processing modules 122, the carrier module 123 for being loaded into audio signal on ultrasonic wave, the audio processing modules 122
It is connect with the control module 121, the carrier module 123, the carrier module 123 is connect with the control module 121；Sound
Frequency acquisition module 130 is installed on the shell 110, connects the audio processing modules 122；And loud speaker 140, it is installed on
The shell 110 connects the carrier module 123.Carrier module 123 can generate the ultrasonic wave of high frequency, when the audio of low frequency is believed
When number being transferred to carrier module 123, audio signal is loaded on ultrasonic wave by carrier module 123, and by ultrasonic wave and audio
Signal travels to air together, is propagated with the highly directive of ultrasonic wave, air can gradually filter ultrasonic wave, audible acoustic frequency signal
It filters out to be heard by human ear, realizes and orient transaudient effect.
Further, the audio processing modules 122 include analog-to-digital conversion module 1221 and D/A converter module 1222, institute
It states analog-to-digital conversion module 1221 and connects the control module 121 and the audio collection module 130, the D/A converter module
The 1221 connections control module 121 and the carrier module 123.Analog-to-digital conversion module 1221 is used to turn analog audio signal
Digital audio and video signals are changed to, D/A converter module 1222 is used to digital audio and video signals being converted to analog audio signal.
In the present embodiment, it is preferred that audio collection module 130 is microphone, and loud speaker 140 is array speaker, sound
Frequency acquisition module 130 is for acquiring audio signal, specifically, for acquiring analog audio signal, such as people's one's voice in speech.Sound
The analog audio signal of acquisition is transmitted to analog-to-digital conversion module 122 by frequency acquisition module 130, and analog-to-digital conversion module 122 will simulate
Audio signal is converted into digital audio and video signals and is transmitted to the processing of control module 121, and control module 121 passes through again after having handled
Digital audio and video signals are converted to analog audio signal and are transmitted to carrier module 123, carrier module by D/A converter module 1222
Analog audio signal is loaded into ultrasonic wave again and travels to air, ultrasonic wave and analog audio signal by loud speaker 140 by 123
The direction specified towards loud speaker 140 is propagated, and analog audio signal is finally heard by human ear, and ultrasonic wave is then filtered by human ear,
Direction propagation is achieved the purpose that.Since loud speaker 140 selects array speaker, reduces sound wave secondary lobe, further improve
Ultrasonic wave directive property.
Further, the shell 110 includes the first shell 111 being connected with each other and second shell 112, the first shell
Body 111 includes first end 1111 and the second end 1112, and the audio collection module 130 is installed on first end 1111, institute
It states loud speaker 140 and is installed on the second end 1112.The first shell 111 and the second shell 112 are cylindrical,
And 111 diameter of first shell is more than the second shell 112.The orientation megaphone 100 further includes being respectively connected to
The key-press module 124 and power module 125 of the control module 121, the key-press module 124 and the power module 125 are pacified
Loaded on the second shell 112.
In this embodiment, it is preferred that second shell 112 is handle, and key-press module 124 is switch, and power module 125 is can
The accumulator of charging, specifically, accumulator is lithium battery.In use, one hand holds second shell 112, module 124 is pushed button
Above-mentioned orientation megaphone 100 is opened, it is then opposite by the second end 1112 of first shell 111 towards the direction to be propagandaed directed to communicate
The first end 1111 of first shell 111 is spoken, and sound can be towards the institute of above-mentioned the second end 1112 towards direction direction propagation.
As it can be seen that low-frequency sound wave is loaded into the strong ultrasonic wave of directive property by above-mentioned orientation megaphone 100 by carrier module 123
On, above-mentioned low-frequency sound wave and ultrasonic wave are launched into the air after enhanced processing, air can gradual filter high-frequency ultrasonic wave, it is low
Frequency Acoustic Wave Propagation is heard to human ear by people, is realized and is oriented transaudient purpose, and propagation angle is narrow, intensity of acoustic wave decaying unobvious；
Propagation distance is remote, and environment resistant interference performance is strong, does not generate noise pollution to the environment other than range of propagandaing directed to communicate.
It should be noted that the utility model is not limited to the above embodiment, creation essence according to the present utility model
God, those skilled in the art can also make other variations, these variations done according to the creative spirit of the utility model, all
It should be within the scope of the utility model be claimed.
Claims (10)
1. a kind of orientation megaphone, which is characterized in that including：
Shell；
Circuit board is installed on the shell, including control module, the audio frequency process mould for carrying out conversion process to audio signal
Block, for audio signal to be loaded into the carrier module on ultrasonic wave, it is the audio processing modules and the control module, described
Carrier module connects, and the carrier module is connect with the control module；
Audio collection module is installed on the shell, connects the audio processing modules；And
Loud speaker is installed on the shell, connects the carrier module.
2. orientation megaphone as described in claim 1, which is characterized in that the audio processing modules include analog-to-digital conversion module
And D/A converter module, the analog-to-digital conversion module connect the control module and the audio collection module, the digital-to-analogue turns
It changes the mold block and connects the control module and the carrier module.
3. orientation megaphone as claimed in claim 2, which is characterized in that the audio collection module is microphone.
4. as described in claim 1 orientation megaphone, which is characterized in that the shell include be connected with each other first shell and
Second shell, the first shell include first end and the second end, and the audio collection module is installed on first end, institute
It states loud speaker and is installed on the second end.
5. orientation megaphone as claimed in claim 4, which is characterized in that the first shell and the second shell are in circle
Column, and the first shell diameter is more than the second shell.
6. as claimed in claim 4 orientation megaphone, which is characterized in that further include be respectively connected to the control module by
Key module and power module, the key-press module and the power module are installed on the second shell.
7. orientation megaphone as claimed in claim 6, which is characterized in that the key-press module includes switch.
8. orientation megaphone as claimed in claim 6, which is characterized in that the power module includes accumulator.
9. orientation megaphone as claimed in claim 8, which is characterized in that the accumulator is lithium battery.
10. orientation megaphone as described in claim 1, which is characterized in that the loud speaker is display loud speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820013737.0U CN208015981U (en) | 2018-01-03 | 2018-01-03 | Orient megaphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820013737.0U CN208015981U (en) | 2018-01-03 | 2018-01-03 | Orient megaphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208015981U true CN208015981U (en) | 2018-10-26 |
Family
ID=63881448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820013737.0U Active CN208015981U (en) | 2018-01-03 | 2018-01-03 | Orient megaphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208015981U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112135232A (en) * | 2020-11-05 | 2020-12-25 | 江苏云界安全技术有限公司 | Multi-mode megaphone |
| CN113030848A (en) * | 2021-03-19 | 2021-06-25 | 星阅科技(深圳)有限公司 | Device for distinguishing whether sound is directional sound source |
-
2018
- 2018-01-03 CN CN201820013737.0U patent/CN208015981U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112135232A (en) * | 2020-11-05 | 2020-12-25 | 江苏云界安全技术有限公司 | Multi-mode megaphone |
| CN113030848A (en) * | 2021-03-19 | 2021-06-25 | 星阅科技(深圳)有限公司 | Device for distinguishing whether sound is directional sound source |
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