CN202121779U - Public address set based on Bluetooth - Google Patents
Public address set based on Bluetooth Download PDFInfo
- Publication number
- CN202121779U CN202121779U CN2011202009873U CN201120200987U CN202121779U CN 202121779 U CN202121779 U CN 202121779U CN 2011202009873 U CN2011202009873 U CN 2011202009873U CN 201120200987 U CN201120200987 U CN 201120200987U CN 202121779 U CN202121779 U CN 202121779U
- Authority
- CN
- China
- Prior art keywords
- bluetooth
- dsp chip
- public address
- address set
- set based
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a public address set based on the Bluetooth. The public address set includes a DSP chip, and is characterized by also including a Bluetooth microphone, a Bluetooth adapter, a D/A converter, and a horn, wherein the Bluetooth microphone is wirelessly connected with the Bluetooth adapter; the Bluetooth adapter is connected with the DSP chip; the DSP chip is connected with the horn via the D/A converter. The public address set also includes a USB interface and a PC, wherein the DSP chip is connected with the PC via the USB interface. The public address set based on Bluetooth transmits a sound signal acquired by the Bluetooth microphone to the DSP chip for the digital signal processing, and then the sound signal is output by the horn. The DSP chip can also be connected with a host PC via the USB interface to realize the recording of the sound signal via the strong function of the PC.
Description
Technical field
The utility model relates to public address set, particularly, relates to the public address set based on bluetooth.
Background technology
Multi-media classroom is for carrying out flexible teaching, improves the quality of teaching and teaching efficiency has crucial meaning.Yet, many teachers when using the multimedia system teaching, situation at a loss as to what to do when regular meeting runs into multimedia system and simple fault occurs, thus influenced normally carrying out of teaching.
In daily teaching, because of the problem of uttering long and high-pitched sounds that acoustic feedback in the public address system causes is spoilled one's pleasure very much.Because the existence of acoustic feedback has not only destroyed tonequality, has limited the public address loudness of microphone; The sound that microphone is picked up can not reproduce well, influences teaching efficiency, even strong acoustic feedback also can make the system signal overload; Burn power amplifier and audio amplifier, thereby cause damage.Therefore being necessary to design a kind of sound reinforcement system that can prevent the device of acoustic feedback phenomenon occurs.
The utility model content
To defective of the prior art, the purpose of the utility model provides a kind of public address set based on bluetooth.
An aspect according to the utility model provides the public address set based on bluetooth, comprises dsp chip; It is characterized in that; Also comprise bluetooth microphone, Bluetooth adapter, D/A converter and loudspeaker, wherein, the said Bluetooth adapter of said bluetooth microphone wireless connections; Said Bluetooth adapter is connected to said dsp chip, and said dsp chip connects said loudspeaker through said D/A converter.
Preferably, also comprise USB interface and PC, wherein, said dsp chip connects said PC through said USB interface.
The utility model carries out Digital Signal Processing with the transmission of sound signals that the bluetooth microphone collects to dsp chip; And then export via loudspeaker; Dsp chip can also connect upper PC through USB interface, thereby realizes recording voice signal through the power of PC.
Description of drawings
Through reading the detailed description of non-limiting example being done with reference to following accompanying drawing, it is more obvious that the other features, objects and advantages of the utility model will become:
Fig. 1 illustrates according to first embodiment of the utility model, based on the structural representation of the public address set of bluetooth.
Embodiment
Fig. 1 illustrates according to first embodiment of the utility model, based on the structural representation of the public address set of bluetooth.Particularly; In the present embodiment, comprise dsp chip 3, also comprise bluetooth microphone 1, Bluetooth adapter 2, D/A converter 6 and loudspeaker 7 based on the public address set of bluetooth; Wherein, The said Bluetooth adapter 2 of said bluetooth microphone 1 wireless connections, said Bluetooth adapter 2 is connected to said dsp chip 3, and said dsp chip 3 connects said loudspeaker 7 through said D/A converter 6.Preferably, also comprise USB interface 4 and PC 5, wherein, said dsp chip 3 connects said PC 5 through said USB interface 4.
Wherein, said Bluetooth adapter 2 preferably includes bluetooth USB adapter, for example can adopt the bluetooth USB adapter that flies upward CF-WF01D model, the positive BT-DG06+ model of huge rock, BAFO-8000 model century.Said dsp chip 3 can adopt the TMS320VC5402 chip of TI company's T MS320C000 series DSP chip or TI company.Said D/A converter can adopt the digital to analog converter of DAC0832 model.
More than the specific embodiment of the utility model is described.It will be appreciated that the utility model is not limited to above-mentioned specific implementations, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not influence the flesh and blood of the utility model.
Claims (2)
1. public address set based on bluetooth; Comprise dsp chip, it is characterized in that, also comprise bluetooth microphone, Bluetooth adapter, D/A converter and loudspeaker; Wherein, The said Bluetooth adapter of said bluetooth microphone wireless connections, said Bluetooth adapter is connected to said dsp chip, and said dsp chip connects said loudspeaker through said D/A converter.
2. the public address set based on bluetooth according to claim 1 is characterized in that, also comprises USB interface and PC, and wherein, said dsp chip connects said PC through said USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202009873U CN202121779U (en) | 2011-06-15 | 2011-06-15 | Public address set based on Bluetooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202009873U CN202121779U (en) | 2011-06-15 | 2011-06-15 | Public address set based on Bluetooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202121779U true CN202121779U (en) | 2012-01-18 |
Family
ID=45462813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202009873U Expired - Fee Related CN202121779U (en) | 2011-06-15 | 2011-06-15 | Public address set based on Bluetooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202121779U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658363A (en) * | 2016-10-21 | 2017-05-10 | 上海与德信息技术有限公司 | Sound amplifying method and device based on mobile terminal |
-
2011
- 2011-06-15 CN CN2011202009873U patent/CN202121779U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658363A (en) * | 2016-10-21 | 2017-05-10 | 上海与德信息技术有限公司 | Sound amplifying method and device based on mobile terminal |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20120615 |