CN201216010Y - Microphone with echo eliminating function equipped with USB sound card and loudspeaker - Google Patents
Microphone with echo eliminating function equipped with USB sound card and loudspeaker Download PDFInfo
- Publication number
- CN201216010Y CN201216010Y CNU200820056600XU CN200820056600U CN201216010Y CN 201216010 Y CN201216010 Y CN 201216010Y CN U200820056600X U CNU200820056600X U CN U200820056600XU CN 200820056600 U CN200820056600 U CN 200820056600U CN 201216010 Y CN201216010 Y CN 201216010Y
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- CN
- China
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- sound card
- microphone
- usb sound
- usb
- loud speaker
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- Expired - Lifetime
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Abstract
The utility model relates to a microphone which is equipped with a USB sound card and a loudspeaker and has a function of eliminating echo, and comprises a microphone, an operational amplifier, a power amplifier and a loudspeaker. The microphone is characterized in that the microphone further comprises a USB sound card clip and a digital audio processing module, wherein the USB sound card clip is connected with a computer through a USB interface, sound signals which are input by the computer are output to the operational amplifier through the USB sound card clip, a single output signal of the operational amplifier is output to the loudspeaker through the power amplifier, and an another single output signal is output to the digital audio processing module to be used as reference audio frequency. The sound signals input by the microphone are treated by the digital audio processing module to eliminate the echo are output to the USB sound card clip, and then are output to the computer by the USB sound card clip. The microphone has the beneficial effects that the structure is simple, can effectively eliminate the echo, and increases the voice quality.
Description
Technical field
The utility model relates to the microphone with echo cancellation function of band USB sound card and loud speaker.
Background technology
Nowadays the kind of microphone and function are more and more, and a kind of microphone with USB sound card and loud speaker is wherein arranged, and such microphone has brought very big convenience to domestic consumer.As long as USB is inserted computer just can carry out voice-enabled chat or video conference, and need not connect audio amplifier in addition, just can hear the other side's speech by the loud speaker on the microphone.But the major defect of this microphone is easily to produce echo, influences speech quality.
The utility model content
The purpose of this utility model has provided a kind of microphone with echo cancellation function with USB sound card and loud speaker, need not connect audio amplifier in addition though solved the microphone of existing band USB sound card and loud speaker, bring convenience to domestic consumer, but easily produce echo, influence the problem of speech quality.
For achieving the above object, the utility model has adopted following technical scheme:
The utility model discloses a kind of microphone with echo cancellation function with USB sound card and loud speaker, comprise miaow head, operational amplifier, power amplifier and loud speaker, it is characterized in that: microphone also includes USB sound card chip and Digital audio process module; Described USB sound card chip is connected with computer by USB interface, and the voice signal of being imported by computer exports operational amplifier to by USB sound card chip; One tunnel output signal of operational amplifier exports loud speaker to by power amplifier, and another road output signal exports Digital audio process module to as the reference audio frequency; Export USB sound card chip to after the voice signal process Digital audio process module elimination echo processing by the input of miaow head, export computer to by USB sound card chip again.
Wherein, USB sound card chip can adopt CM108 sound card chip.Operational amplifier can adopt JRC4558D, or BA4510F, or TS932.Power amplifier can adopt TPA3007D1, or TPA2000D1, or TPA2005D1.
The beneficial effects of the utility model are: simple in structure, can effectively eliminate echo, and improved speech quality.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
A kind of microphone with echo cancellation function with USB sound card and loud speaker as shown in Figure 1, comprises miaow head, operational amplifier, power amplifier, loud speaker, USB sound card chip and Digital audio process module.The other side's sound is transferred in the USB sound card chip of microphone through computer when opening video conference, output to operational amplifier again, operational amplifier is divided into two-way output with sound then, one the tunnel gives transfer voice power amplifier and drives loud speaker sound is released, another road transfer voice gives Digital audio process module as the reference audio frequency, and sound that the miaow head on the microphone can be released loud speaker and local sound collect and are transferred to Digital audio process module simultaneously, the other side's sound is eliminated and give USB sound card chip through digital processing, be transferred to far-end through computer with the transfer voice of this locality.Echo cancellation will be fallen like this.
The used USB sound card chip of the utility model is a CM108 sound card chip, and operational amplifier is JRC4558D, and power amplifier is TPA3007d1, and the Digital audio process module of echo cancellation adopts two groups of contact pins in this example, every group of contact pin with 2*12 spacing 2mm.The socket of sound console usefulness and contact pin correspondence is fixed with 3 key screw processor modules and sound console in addition.The input and output of sound pass into and spread out of module by contact pin, and power supply is also provided by the pin of contact pin.
In addition, described operational amplifier also can use BA4510F and TS932 etc., and power amplifier also can use TPA2000D1 and TPA2005D1 etc.
Claims (4)
1, the microphone with echo cancellation function of band USB sound card and loud speaker comprises miaow head, operational amplifier, power amplifier and loud speaker, and it is characterized in that: microphone also includes USB sound card chip and Digital audio process module;
Described USB sound card chip is connected with computer by USB interface, and the voice signal of being imported by computer exports operational amplifier to by USB sound card chip; One tunnel output signal of operational amplifier exports loud speaker to by power amplifier, and another road output signal exports Digital audio process module to as the reference audio frequency; Export USB sound card chip to after the voice signal process Digital audio process module elimination echo processing by the input of miaow head, export computer to by USB sound card chip again.
2, by the microphone with echo cancellation function of claim 1 described band USB sound card and loud speaker, it is characterized in that: described USB sound card chip adopts CM108 sound card chip.
3, by the microphone with echo cancellation function of claim 1 described band USB sound card and loud speaker, it is characterized in that: described operational amplifier adopts JRC4558D, or BA4510F, or TS932.
4, by the microphone with echo cancellation function of claim 1 described band USB sound card and loud speaker, it is characterized in that: described power amplifier adopts TPA3007D1, or TPA2000D1, or TPA2005D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820056600XU CN201216010Y (en) | 2008-03-26 | 2008-03-26 | Microphone with echo eliminating function equipped with USB sound card and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820056600XU CN201216010Y (en) | 2008-03-26 | 2008-03-26 | Microphone with echo eliminating function equipped with USB sound card and loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201216010Y true CN201216010Y (en) | 2009-04-01 |
Family
ID=40521215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820056600XU Expired - Lifetime CN201216010Y (en) | 2008-03-26 | 2008-03-26 | Microphone with echo eliminating function equipped with USB sound card and loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201216010Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103428593A (en) * | 2012-05-15 | 2013-12-04 | 华平信息技术股份有限公司 | Device for collecting audio signals based on loudspeaker |
| RU170666U1 (en) * | 2016-06-17 | 2017-05-03 | Денис Юрьевич Ярков | System of external computer sound card-sound amplifier with signal transmission and power supply via USB port |
| CN110823590A (en) * | 2019-09-29 | 2020-02-21 | 浙江合众新能源汽车有限公司 | Simple sound source device for electric automobile and generation method |
-
2008
- 2008-03-26 CN CNU200820056600XU patent/CN201216010Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103428593A (en) * | 2012-05-15 | 2013-12-04 | 华平信息技术股份有限公司 | Device for collecting audio signals based on loudspeaker |
| CN103428593B (en) * | 2012-05-15 | 2016-07-06 | 华平信息技术股份有限公司 | The device of audio signal is gathered based on speaker |
| RU170666U1 (en) * | 2016-06-17 | 2017-05-03 | Денис Юрьевич Ярков | System of external computer sound card-sound amplifier with signal transmission and power supply via USB port |
| CN110823590A (en) * | 2019-09-29 | 2020-02-21 | 浙江合众新能源汽车有限公司 | Simple sound source device for electric automobile and generation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200433 Shanghai City, Yangpu District National Road No. 335 Patentee after: Information Technology Co., Ltd. Shanghai Avcon Address before: 200433 Shanghai City, Yangpu District National Road No. 335 Patentee before: Shanghai Avcon Information Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090401 |