CN201758437U - Microphone capable of being automatically turned off by detecting voice - Google Patents
Microphone capable of being automatically turned off by detecting voice Download PDFInfo
- Publication number
- CN201758437U CN201758437U CN2010202734990U CN201020273499U CN201758437U CN 201758437 U CN201758437 U CN 201758437U CN 2010202734990 U CN2010202734990 U CN 2010202734990U CN 201020273499 U CN201020273499 U CN 201020273499U CN 201758437 U CN201758437 U CN 201758437U
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Abstract
The utility model discloses a microphone capable of being automatically turned off by detecting voice. The microphone comprises a primary amplifying circuit connected with a pick-up head; the output end of the primary amplifying circuit is connected with a volume adjusting circuit; the output end of the volume adjusting circuit is connected with a secondary amplifying circuit; the output end of the primary amplifying circuit is further connected with a voice band-limited circuit; the output end of the voice band-limited circuit is connected with a dynamic detection circuit; the output end of the dynamic detection circuit is connected with an electronic switch circuit; and the input end of the electronic switch circuit is connected with the output end of the secondary amplifying circuit. Through the detection of a voice signal, the utility model can analyze and judge whether a speaker leaves the position or not, so as to turn off the microphone at a proper time. The utility model has the advantages that the structure is simple, the broadcasting efficiency of a public address system and a public conferencing system is greatly improved, the broadcasting resource is optimized, and the effect of high performance cost ratio is achieved. The microphone with excellent performance is widely applicable to the public address systems or the public conferencing systems.
Description
Technical field
Whether the utility model relates to a kind of microphone, particularly a kind ofly can detect the sounder voice and judge sounder to leave and the microphone of closing automatically.
Background technology
In sound reinforcement systems such as Public Address system, conference system, be extensive use of microphone.Some sound reinforcement systems have a plurality of microphones, but synchronization only allows limited microphone work.The speech of the sounder that has finishes and forgets after leaving and close microphone, can cause like this that other microphone can't start in the sound reinforcement system, can cause to seriously influence when urgent public address, and this problem is disturbed a lot of years in the public address technical field.
The utility model content
In order to solve above-mentioned technical problem, the purpose of this utility model provides a kind of sounder that can detect and leaves, and the microphone of closing automatically.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of microphone that can detect voice and close automatically, include the one-level amplifying circuit that is connected with pick-up head, the output of described one-level amplifying circuit is connected with volume control circuit, the output of described volume control circuit is connected with second amplifying circuit, the output of one-level amplifying circuit also is connected with voice and limits charged road, described voice limit the output on charged road to be connected with dynamic detection circuit, the output of described dynamic detection circuit is connected with electronic switching circuit, and the input of described electronic switching circuit is connected with the output of second amplifying circuit.
Be further used as preferred embodiment, also be connected with delay control circuit between described dynamic detection circuit and the electronic switching circuit, the input of described delay control circuit is connected with the output of dynamic detection circuit, and the output of described delay control circuit is connected with another input of electronic switching circuit.
Be further used as preferred embodiment, described electronic switching circuit can be controlled by delay control circuit, can it open and close by Artificial Control again.
Be further used as preferred embodiment, described delay control circuit is for being provided with the delay control circuit of adjusting delay time.
The beneficial effects of the utility model are: the utility model is by the detection voice signal, thereby whether the analysis and judgement sounder leaves the position, and then closes microphone.The utility model is simple in structure, has improved the broadcasting efficiency of Public Address system and conference system greatly, has optimized broadcast resource, reaches the high effect of cost performance.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the internal circuit unit block diagram of traditional microphones;
Fig. 2 is the internal circuit unit block diagram of novel microphone.
Embodiment
With reference to Fig. 2, a kind of microphone that can detect voice and close automatically, include the one-level amplifying circuit 2 that is connected with pick-up head 1, the output of described one-level amplifying circuit 2 is connected with volume control circuit 3, the output of described volume control circuit 3 is connected with second amplifying circuit 4, the output of one-level amplifying circuit 2 also is connected with voice and limits charged road 6, described voice limit the output on charged road 6 to be connected with dynamic detection circuit 7, the output of described dynamic detection circuit 7 is connected with electronic switching circuit 9, and the input of described electronic switching circuit 9 is connected with the output of second amplifying circuit 4.
Be further used as preferred embodiment, also be connected with delay control circuit 8 between described dynamic detection circuit 7 and the electronic switching circuit 9, the input of described delay control circuit 8 is connected with the output of dynamic detection circuit 7, and the output of described delay control circuit 8 is connected with another input of electronic switching circuit 9.
Be further used as preferred embodiment, described electronic switching circuit 9 can it be opened and close again by delay control circuit 8 controls by Artificial Control.
Be further used as preferred embodiment, described delay control circuit 8 is for being provided with the delay control circuit of adjusting delay time.
Fig. 1 has illustrated the internal circuit cellular construction of traditional microphones, Fig. 2 to illustrate the internal circuit cellular construction of novel microphone.With respect to Fig. 1, Fig. 2 has increased that voice limits is with 6, detection of dynamic 7, time-delay control 8 and electronic switch 9.
The voice limit is that the signal of telecommunication of pick-up head being given one-level amplification output carries out the frequency band limits processing, extracts voice from the signal of telecommunication, with other noise signals filtering with the effect of Unit 6.
The effect of detection of dynamic Unit 7 is, utilizes the dynamic characteristic of voice, judges that whether sounder is at sounding.The difference of the environmental sound signal around voice signal and the microphone is, voice signal is along with speech content changes, the continuous dynamic change of its signal amplitude, and environmental sound signal more constant value normally.Whether detection of dynamic Unit 7 can effectively detect sounder at sounding according to this characteristic.
The effect of time-delay control unit 8 is, when detect last sounder not sounding send a control signal and give electronic switch Unit 9 after the some time, close microphone.The time of time-delay control unit 8 can manually be set; Electronic switch Unit 9 both can also can it leave and close by the control of time-delay control unit 8 by Artificial Control.
More than be that preferable enforcement of the present utility model is specified, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite of the utility model spirit, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (4)
1. microphone that can detect voice and close automatically, include the one-level amplifying circuit (2) that is connected with pick-up head, the output of described one-level amplifying circuit (2) is connected with volume control circuit (3), the output of described volume control circuit (3) is connected with second amplifying circuit (4), it is characterized in that: the output of one-level amplifying circuit (2) also is connected with voice and limits charged road (6), described voice limit the output on charged road (6) to be connected with dynamic detection circuit (7), the output of described dynamic detection circuit (7) is connected with electronic switching circuit (9), and the input of described electronic switching circuit (9) is connected with the output of second amplifying circuit (4).
2. a kind of microphone that can detect voice and close automatically according to claim 1, it is characterized in that: also be connected with delay control circuit (8) between described dynamic detection circuit (7) and the electronic switching circuit (9), the input of described delay control circuit (8) is connected with the output of dynamic detection circuit (7), and the output of described delay control circuit (8) is connected with another input of electronic switching circuit (9).
3. a kind of microphone that can detect voice and close automatically according to claim 2 is characterized in that: described electronic switching circuit (9) can pass through delay control circuit (8) control, can it open and close by Artificial Control again.
4. a kind of microphone that can detect voice and close automatically according to claim 2 is characterized in that: described delay control circuit (8) is for being provided with the delay control circuit of adjusting delay time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202734990U CN201758437U (en) | 2010-07-27 | 2010-07-27 | Microphone capable of being automatically turned off by detecting voice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202734990U CN201758437U (en) | 2010-07-27 | 2010-07-27 | Microphone capable of being automatically turned off by detecting voice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201758437U true CN201758437U (en) | 2011-03-09 |
Family
ID=43645725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202734990U Expired - Lifetime CN201758437U (en) | 2010-07-27 | 2010-07-27 | Microphone capable of being automatically turned off by detecting voice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201758437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109511040A (en) * | 2018-12-27 | 2019-03-22 | 歌尔科技有限公司 | A kind of whisper in sb.'s ear amplification method, device and earphone |
-
2010
- 2010-07-27 CN CN2010202734990U patent/CN201758437U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109511040A (en) * | 2018-12-27 | 2019-03-22 | 歌尔科技有限公司 | A kind of whisper in sb.'s ear amplification method, device and earphone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110309 |
|
| CX01 | Expiry of patent term |