CN2365833Y - Background noise interference resisting pick-up - Google Patents
Background noise interference resisting pick-up Download PDFInfo
- Publication number
- CN2365833Y CN2365833Y CN 98249753 CN98249753U CN2365833Y CN 2365833 Y CN2365833 Y CN 2365833Y CN 98249753 CN98249753 CN 98249753 CN 98249753 U CN98249753 U CN 98249753U CN 2365833 Y CN2365833 Y CN 2365833Y
- Authority
- CN
- China
- Prior art keywords
- pick
- background noise
- audio signal
- adapterization
- utility
- 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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- Noise Elimination (AREA)
Abstract
In the utility model, an inverted noise sound signal is generated by the method that one adapterization element is connected to an adapterization element of a traditional adapterization device, and the inverted noise sound signal and an audio signal which is generated by a main adapterization element are mutually overlapped to eliminate the interference of background noise. The utility model can be applied to sound devices which are operated under the circumstances with relatively strong interference of background noise, such as a cordless telephone, a microphone, etc.
Description
The utility model relates to a kind of pick up device that can filter the diversity of settings noise.
Existing various pick up device, when receiving effective sound, inevitably to receive certain background noise, when the background noise sound intensity is bigger, to significantly disturb effective sound generating, this is very disadvantageous to obtaining the higher voice signal of quality.The purpose of this utility model is that a kind of improved pick up device will be provided, and it can effectively eliminate the interference of background noise.
The purpose of this utility model is achieved in that pick up element 2 of differential concatenation on the pick up element 1 of traditional pick up device, be used for producing the anti-phase signal of audio signal that is produced with pick up element 1, pick up element 1 is somebody's turn to do and pick up element 2 interval 10---20cm.Because background noise is in the sound intensity approximately equal at pick up element 1 and pick up element 2 places, thereby produce the intensity approximately equal at 1,2 places, the audio signal that phase place is opposite, cancel out each other after the stack of two signals, the audio signal that noise produced in the signal of output will be weakened greatly like this, and effective sound source is because nearer apart from pick up element 1, the signal strength signal intensity that the signal strength signal intensity that pick up element 1 is produced will be produced much larger than pick up element 2, two signals stack back is little to the influence of useful signal, has so just reached to remove the purpose that background noise disturbs.
The utility model is because only need connect a pick up device, so structure is simple especially on original equipment; Simultaneously because the starting point is to change the audio signal of input amplifying circuit, thus it to original equipment without any specific (special) requirements, be easy on various devices, realize.
The concrete structure of utility model is provided by following examples and accompanying drawing:
The pick up manipulated or operated apparatus that Fig. 1 disturbs according to the background noise resistance that the utility model proposes.
Fig. 2 is not for wherein comprising the waveform schematic diagram of the audio signal of flip-flop.
Fig. 3 is for wherein comprising the waveform schematic diagram of the audio signal of flip-flop.
Describe details and working condition in detail below in conjunction with Fig. 1 according to the concrete device that the utility model proposes.
Pick up element 1 is main pick up element, and the pick up element 2 that differential concatenation on the pick up element 1 is used for producing and the anti-phase signal of pick up element 1 audio signal that produces.Make pick up element 1 and pick up element 2 interval 10---20cm simultaneously, so that do not disturb the collection of effective voice signal.For producing audio signal pick up element as shown in Figure 2, directly differential concatenation get final product, for producing audio signal pick up element as shown in Figure 3, needs electric capacity of parallel connection, filter flip-flop wherein after, in parallel with pick up element 1 again.
Claims (2)
1, the pick up device that disturbs of background noise resistance is characterized in that having the pick up element [2] that links to each other with main pick up element [1] to produce anti-phase noise audio signal, with the superimposed interference that comes the cancellation background noise of the audio signal of main pick up element [1] generation.
2, according to claim 1 described device, it is characterized in that having a switching control mechanism to link to each other with pick up element [2], be used for controlling whether eliminate background noise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98249753 CN2365833Y (en) | 1998-12-15 | 1998-12-15 | Background noise interference resisting pick-up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98249753 CN2365833Y (en) | 1998-12-15 | 1998-12-15 | Background noise interference resisting pick-up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2365833Y true CN2365833Y (en) | 2000-02-23 |
Family
ID=33994409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98249753 Expired - Fee Related CN2365833Y (en) | 1998-12-15 | 1998-12-15 | Background noise interference resisting pick-up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2365833Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011113341A1 (en) * | 2010-03-18 | 2011-09-22 | 华为终端有限公司 | Audio apparatus capable of noise reduction and mobile telephone capable of noise reduction |
-
1998
- 1998-12-15 CN CN 98249753 patent/CN2365833Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011113341A1 (en) * | 2010-03-18 | 2011-09-22 | 华为终端有限公司 | Audio apparatus capable of noise reduction and mobile telephone capable of noise reduction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Liang Dong Document name: Notice of termination |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |