CN2904530Y - Acoustocontroller for bidirectional interphone system - Google Patents
Acoustocontroller for bidirectional interphone system Download PDFInfo
- Publication number
- CN2904530Y CN2904530Y CN 200620073278 CN200620073278U CN2904530Y CN 2904530 Y CN2904530 Y CN 2904530Y CN 200620073278 CN200620073278 CN 200620073278 CN 200620073278 U CN200620073278 U CN 200620073278U CN 2904530 Y CN2904530 Y CN 2904530Y
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- microphone
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- main microphone
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Abstract
This invention is a new type talkback system voice-controlling device. The utility model relates to an enclosed type bidirectional cable talkback megaphone used on window, belongs to electro-acoustic technical field. The main microphone and noise receiving microphone are arranged in the same inner microphone shell form a inner microphone; and the voice receiving face of the noise receiving microphone is in 90 degree angle with main microphone voice receiving face in horizontal direction; The on-off of the inner and outer microphone is determined by voltage comparator according to the output of main microphone and noise receiving microphone. The utility model overcomes the false action caused by phase, the directivity of the microphone is further sharpened, the anti-jamming capability is enhanced remarkably, and the labor intensity of working personnel is reduced. Moreover, the utility model has advantages of low cost, adjustable parameter; and is an ideal substitute of talkback system used on enclosed window of communication and finance.
Description
Technical field
The utility model relates to a kind of closed window with two-way wired intercom sound amplifier, belongs to the electroacoustic techniques field.
Background technology
At present, often effect is unsatisfactory for the two-way wired intercom sound amplifier that uses under some strong jammings, high noise environments, as the two-way wired intercom sound amplifier that uses at railway, the closed window in passenger traffic stations on highway box office, it is close because window is many, be superimposed upon on the microphone from the various machine sound of different directions, staff's voice, microphone forms and disturbs, and often makes that passenger's voice is intermittent, influence the operate as normal of intercom system, also strengthened staff's labour intensity.Because transmitting, audio signal exists complicated phase difference in air, so determine in the two-way intercom system sound-controlled apparatus of inside and outside microphone break-make the structure that sets up separately of relative distance between the main microphone and noise reception microphone in the existing output that receives microphone by voltage comparator according to main microphone and noise, tend to reason because of phase place and cause that operating state is undesirable sometimes.
The utility model content
The purpose of this utility model is that a kind of anti-interference, novel two-way intercom system sound-controlled apparatus that the noise resistance performance is good will be provided.
The utility model comprises that main microphone, outer microphone, amplifier, electronic switch, main frame, loud speaker, noise receive microphone, amplifier and voltage comparator, the output of the output of main microphone and noise reception microphone is connected to the input of voltage comparator respectively through amplifier, the output of voltage comparator connects the electronic switch of inside and outside microphone respectively, it is characterized in that main microphone and noise reception microphone is located at the interior microphone of composition in the same interior microphone shell, and noise reception microphone is subjected to words face and main microphone to be subjected to the words face to be 90 ° of angles in the horizontal direction.
Described noise microphone is installed on the behind of main microphone, or the top, or the below.
Operation principle of the present utility model is: main microphone and noise receive microphone and are located at the interior microphone of composition in the same interior microphone shell, main microphone is single microphone that points to, be used for receiving the voice signal of staff in the box office, it is bidirectional microphone that noise receives microphone, is used for receiving the noise signal in the box office.Main microphone faces staff's mouth, the noise microphone be installed on main microphone behind or above or below, it is subjected to words face and main microphone to be subjected to the words face to be 90 ° of angles in the horizontal direction.The reception of main microphone is characterized as heart, i.e. the receiving sensitivity maximum in dead ahead, and take second place in the side, minimum behind, the receiving feature that noise receives microphone is 8 fonts, i.e. fore-and-aft direction sensitivity maximum, and amplitude is basic identical, and minimum to the signal output from the side.Utilize above-mentioned feature, both are combined, form when main microphone output receives microphone output greater than noise, main microphone is switched on, staff's sound is amplified, otherwise main microphone is then closed, and promptly the utility model has only when reaching certain intensity when staff speech or from the sound in main microphone the place ahead and just connects main microphone, and other times are then closed.When the output of noise reception microphone was exported greater than main microphone, the unduly polite words that a friend is not expected to say socket joint was logical, and passenger's sound is amplified, and closes main microphone simultaneously.Thereby avoided other noises in the box office to disturb the operate as normal of outer microphone, also avoided other noises in the box office to disturb the operate as normal of microphone simultaneously.
Superiority of the present utility model is: overcome misoperation former because of phase place thereby that cause, more sharpening the directive property of microphone, improved anti-jamming capacity significantly, alleviated staff's labour intensity.Simultaneously, it also has cheap, and the characteristics that parameter is adjustable are desirable replacement device of the two-way intercom system of closed windows uses such as traffic, finance.
Description of drawings:
Fig. 1 is a microphone partial structurtes schematic diagram in the utility model embodiment one.
Fig. 2 is a microphone partial structurtes schematic diagram in the utility model embodiment two.
Fig. 3 is a microphone partial structurtes schematic diagram in the utility model embodiment three.
1 is main microphone among the figure, the 2nd, and noise receives microphone, the 3rd, interior microphone shell.
Embodiment one
Main microphone 1 is single microphone that points to, and is used for receiving the voice signal of staff in the box office, and it is bidirectional microphone that noise receives microphone, is used for receiving the noise signal in the box office.Main microphone 1 faces staff's mouth, and noise microphone 2 is installed on main microphone 1 behind, and the two is with in the microphone shell 3 in being located at, and it is subjected to words face and main microphone 1 to be subjected to the words face to be 90 ° of angles in the horizontal direction.The reception of main microphone 1 is characterized as heart, i.e. the receiving sensitivity maximum in dead ahead, and take second place in the side, minimum behind, the receiving feature that noise receives microphone 2 is 8 fonts, i.e. fore-and-aft direction sensitivity maximum, and amplitude is basic identical, and minimum to the signal output from the side.Utilize above-mentioned feature, both are combined, form when main microphone 1 output receives microphone 2 outputs greater than noise, main microphone 1 is switched on, and staff's sound is amplified through loud speaker, otherwise 1 of main microphone is closed.When noise received microphone 2 outputs greater than main microphone 1 output, the unduly polite words that a friend is not expected to say socket joint was logical, and passenger's sound is amplified, and closes main microphone 1 simultaneously.Thereby avoided other noises in the box office to disturb the operate as normal of microphone.
Embodiment two
Noise is received the top that microphone 2 places main microphone 1, and the two is with in the microphone shell 3 in being located at, it is subjected to words face and main microphone 1 to be subjected to the words face to be 90 ° of angles in the horizontal direction.
Embodiment three
Noise is received the below that microphone 2 places main microphone 1, and the two is with in the microphone shell 3 in being located at, it is subjected to words face and main microphone 1 to be subjected to the words face to be 90 ° of angles in the horizontal direction.
Claims (2)
1, a kind of novel two-way intercom system sound-controlled apparatus, comprise main microphone, outer microphone, amplifier, electronic switch, main frame, loud speaker, noise receives microphone, amplifier and voltage comparator, the output of the output of main microphone and noise reception microphone is connected to the input of voltage comparator respectively through amplifier, the output of voltage comparator connects the electronic switch of inside and outside microphone respectively, it is characterized in that main microphone and noise reception microphone is located at the interior microphone of composition in the same interior microphone shell, and noise reception microphone is subjected to words face and main microphone to be subjected to the words face to be 90 ° of angles in the horizontal direction.
2, a kind of novel two-way intercom system sound-controlled apparatus according to claim 1 is characterized in that described noise microphone is installed on the behind of main microphone, or the top, or the below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620073278 CN2904530Y (en) | 2006-05-28 | 2006-05-28 | Acoustocontroller for bidirectional interphone system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620073278 CN2904530Y (en) | 2006-05-28 | 2006-05-28 | Acoustocontroller for bidirectional interphone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2904530Y true CN2904530Y (en) | 2007-05-23 |
Family
ID=38079941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620073278 Expired - Fee Related CN2904530Y (en) | 2006-05-28 | 2006-05-28 | Acoustocontroller for bidirectional interphone system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2904530Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113473278A (en) * | 2021-07-15 | 2021-10-01 | 深圳唐恩科技有限公司 | Sound and microphone integrated equipment capable of effectively inhibiting squeaking |
-
2006
- 2006-05-28 CN CN 200620073278 patent/CN2904530Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113473278A (en) * | 2021-07-15 | 2021-10-01 | 深圳唐恩科技有限公司 | Sound and microphone integrated equipment capable of effectively inhibiting squeaking |
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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: 20070523 Termination date: 20100528 |