CN1968541A - Earphone amplifier with USB soundcard and hub - Google Patents
Earphone amplifier with USB soundcard and hub Download PDFInfo
- Publication number
- CN1968541A CN1968541A CN 200610137092 CN200610137092A CN1968541A CN 1968541 A CN1968541 A CN 1968541A CN 200610137092 CN200610137092 CN 200610137092 CN 200610137092 A CN200610137092 A CN 200610137092A CN 1968541 A CN1968541 A CN 1968541A
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- usb
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Abstract
The invention relates to an earphone loudspeaker with USB sound card and collecting tray, used in computer, wherein it is formed by voice power amplifier, USB collecting tray, USB sound card circuit, USB plug line, USB plug, power output earphone plug, and frame; USB plug is connected to the USB plug of computer; when the USB plug is connected, the computer USB plug can transmit data and power, to connect the anode and ground line of amplifier to computer, to be powered, to confirm normal operation; and the data line can feed digit signal from USB plug to the sound card to be decoded to obtain high-quality voice, to be amplified by earphone amplifier.
Description
Technical field
What the present invention relates to is Earphone Amplifier, especially a kind of Earphone Amplifier with USB sound card, hub.
Background technology
At present, some Earphone Amplifier products are arranged on the market, by independent ac power supply, generally use the CD player to be source of sound, connecting professional earphone listens to, can reach effect on the spot in person, these Earphone Amplifiers cost an arm and a leg, and are the professional Earphone Amplifier products towards the Fancier level.And present most computed people, if use the earphone music appreciating on computers, all be that the audio output jack that earphone directly inserts computer is listened to, because, the sound output of AC97 sound card is very little on the computer motherboard, belong to the output of audio signal circuit, insert general earphone and can only hear music at last, volume is little, weak effect, almost can't hear bass, because low frequency signal needs bigger drive current, although the output of audio signal circuit has very smooth 20HZ-20KHZ frequency response curve, owing to can not provide enough drive currents to earphone, changed highly sensitive exactly, the advanced headset that impedance is low, also just slightly better, effect is still undesirable, though the sound card power output on some computer motherboard more greatly, but effect also is general, and, because the electromagnetic interference of computer-internal has very big influence to the audio signal of exporting, be difficult to hear pure music effect.And the Earphone Amplifier that designs a kind of self-carried USB sound card, hub just can address this problem well.
Summary of the invention
Purpose of the present invention just provides a kind of Earphone Amplifier, especially a kind of Earphone Amplifier with USB sound card, hub.This Earphone Amplifier, comprise: USB sound card circuit, audio power amplifying circuit, usb hub, USB plug line, USB socket, power output earphone jack, microphone jack etc., it is characterized in that: Earphone Amplifier be provided with the USB socket and with computer on the USB plug that is connected of USB socket, taking out digital signal by USB interface from computer is decoded by the sound card circuit that carries, amplify output through audio frequency amplifier again, the usb hub function is provided simultaneously.
Band USB sound card of the present invention, the Earphone Amplifier design principle of hub is: by the USB plug that is connected with computer USB socket, when the USB socket is connected, make full use of computer USB socket and not only can transmit data, and the characteristics that can power, the positive pole of Earphone Amplifier circuit and ground wire are linked to each other with ground wire with positive pole in the computer USB socket, by computer is the Earphone Amplifier power supply, guarantee the operate as normal of Earphone Amplifier, simultaneously, data wire will be sent into the sound card circuit by the digital signal that USB interface is taken out and decode, become the audio signal of high-fidelity, the amplification of process Earphone Amplifier is sent into earphone and is listened to or export, and provide USB socket, the function of usb hub is for the user of computer provides convenience.
Band USB sound card of the present invention, the Earphone Amplifier of hub is reasonable in design, simple in structure, profile can be designed to different shape, volume is little, patch conveniently, wherein, audio-frequency power amplifier can use any amplifier circuit and device to form, its circuit structure form also can be varied, generally by volume control circuit, tone control, frequency equalization circuit and power amplification circuit are formed, by USB plug from computer introduce+5V power supply power supply, can regulate volume and high low pitch according to hearer's needs, frequency characteristic and even reverberation effect because Earphone Amplifier has enough undistorted power outputs, can provide enough drive currents to earphone, so, changed and used earphone to have heard music at last in the past on computers, volume is little, weak effect almost be can't hear the situation of bass, listen to if connect professional earphone, can reach effect on the spot in person.
USB sound card circuit can adopt general various sound card circuit at present among the present invention, and the various functions of senior sound controls such as Xear3D can be arranged, also can be in sound card integrated low power amplifier; Owing to be decoding and amplification outside cabinet, thereby stopped the electromagnetic interference of cabinet inside, make tonequality purer, signal to noise ratio can reach about 90 decibels, and can support 2 sound channels and the output of simulation multichannel.The input signal of microphone also can become digital signal by the sound card circuit conversion, handles by USB interface input computer.
Usb hub adopts custom circuit to form among the present invention, and the additional outlet that a 5V is arranged, generally speaking, when power consumption is in the amount of power supply scope of USB interface restriction, can outlet is vacant, only use a computer and go up USB modular connection power supply; And work as USB interface more than 4, when external USB device power consumption is big, just 5 volts of attaching plugs of special use can be inserted vacant outlets, to guarantee usb hub and equipment operate as normal.
The operation principle of the Earphone Amplifier of band USB sound card of the present invention, hub is provided in detail by the following drawings and embodiment.
Description of drawings
Fig. 1 is the fundamental diagram of the Earphone Amplifier of band USB sound card, hub.
Fig. 2 is the fundamental diagram of another embodiment of Earphone Amplifier of band USB sound card, hub.
Among the figure: 1, audio power amplifying circuit 2, earphone microphone jack 3, output plughole
4, USB plug 5,5V outlet 6, resistance 7, usb hub
8, USB socket 9, USB sound card circuit 10, electric capacity 11, light-emitting diode
Embodiment
In Fig. 1, be connected to the output of USB sound card circuit (9) on the audio power amplifying circuit (1), audio signal after the amplification is exported by output plughole (3), audio power amplifying circuit (1) is generally by volume control circuit, tone control, frequency equalization circuit and power amplification circuit are formed, can regulate volume and high low pitch as required, ground wire on the ground wire of audio power amplifying circuit (1) and power input and USB plug (4) lead, + 5V links to each other, behind the USB socket on USB plug (4) the insertion computer, power connection, audio power amplifying circuit (1) is promptly started working; The other end on USB plug (4) lead is connected to usb hub (7), on usb hub (7), be connected to standby 5V outlet (5), USB socket (8) on the usb hub (7) generally can be about 4, design as required, the amount doesn't matter, USB sound card circuit (9) passes through usb hub (7) or directly links to each other with computer, and audio signal handled, output, the voice signal of earphone microphone jack (2) input also is input to computer by it, resistance (6) electric capacity (10), light-emitting diode (11) has been formed indicator light circuit, indicate as power supply, output plughole (3) is two parallel connections, the jack that adopts different diameters is to adapt to the headset plug of different size, and shell of the present invention also can be designed to different shape as required, the moulding attractive in appearance of size and material.
In the embodiment shown in Figure 2, when adopting the USB sound card circuit of integrated low power amplifier, can save audio power amplifying circuit (1), output plughole (3) directly links to each other with USB sound card circuit (9), audio signal after the amplification is still by the output of the output plughole (3) of two different diameters, and this scheme is applicable to that it is not very high user that tonequality is required, and volume, tone, loudness etc. can not directly be regulated, but it is less that volume can be done, and is easy to carry.
Claims (9)
1, a kind of band USB sound card, the Earphone Amplifier of hub, by audio power amplifying circuit, USB sound card circuit, usb hub, the USB plug line, the USB socket, the earphone microphone jack, power output earphone jack, compositions such as shell, it is characterized in that: by the USB plug that is connected with computer USB socket, the positive pole of Earphone Amplifier circuit and ground wire are linked to each other with ground wire with positive pole in the computer USB socket, by computer is the Earphone Amplifier power supply, take out digital signal by USB interface from computer, decode by the sound card circuit that carries, amplify output through audio frequency amplifier again, the usb hub function is provided simultaneously, and usb hub is used to connect various USB device.
2, the Earphone Amplifier of band USB sound card according to claim 1, hub, it is characterized in that: audio-frequency power amplifier can use any amplifier circuit and device to form, its circuit structure form also can be varied, can there be volume control circuit to regulate volume, also can has tone control, frequency equilibrium, reverberation circuit to regulate high low pitch, frequency characteristic and reverberation effect.
3, the Earphone Amplifier of band USB sound card according to claim 1, hub, it is characterized in that: USB sound card circuit can adopt general various sound card circuit at present, the various functions that senior sound controls such as Xear3D can be arranged, also can be in sound card integrated low power amplifier, can support 2 sound channels and the output of simulation multichannel.
4, the Earphone Amplifier of band USB sound card according to claim 1, hub, it is characterized in that: microphone jack is arranged, and the signal of input can become digital signal by the sound card circuit conversion, handles by USB interface input computer.
5, the Earphone Amplifier of band USB sound card according to claim 1, hub, it is characterized in that: shell can use various materials as required and be designed to different shape.
6, the Earphone Amplifier of band USB sound card according to claim 1, hub, it is characterized in that: the USB socket is arranged, and the USB socket quantity on the usb hub can design as required, and is the amount doesn't matter.
7, the Earphone Amplifier of band USB sound card according to claim 1, hub is characterized in that: standby external power supply socket is arranged on usb hub.
8, the Earphone Amplifier of band USB sound card according to claim 1, hub is characterized in that: have the light emitting diode lamp circuit to indicate as power supply.
9, the Earphone Amplifier of band USB sound card according to claim 1, hub is characterized in that: when adopting the USB sound card circuit of integrated low-power amplifier, can save the audio-frequency power amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610137092 CN1968541A (en) | 2006-10-18 | 2006-10-18 | Earphone amplifier with USB soundcard and hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610137092 CN1968541A (en) | 2006-10-18 | 2006-10-18 | Earphone amplifier with USB soundcard and hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1968541A true CN1968541A (en) | 2007-05-23 |
Family
ID=38077012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610137092 Pending CN1968541A (en) | 2006-10-18 | 2006-10-18 | Earphone amplifier with USB soundcard and hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1968541A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543151A (en) * | 2011-12-21 | 2012-07-04 | 边仿 | MP3 player with headphone amplifier card capable of being replaced |
| CN102694506A (en) * | 2012-06-06 | 2012-09-26 | 国光电器股份有限公司 | Audio-frequency amplifier system powered based on power supply of computer USB (Universal Serial Bus) power source and integration of USB audio card |
| CN102058469B (en) * | 2009-11-12 | 2013-04-17 | 英华达(上海)电子有限公司 | Portable massager and equipment with audio function |
| CN105554611A (en) * | 2014-12-29 | 2016-05-04 | 北京小鸟听听科技有限公司 | Earphone and implementation method thereof |
-
2006
- 2006-10-18 CN CN 200610137092 patent/CN1968541A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102058469B (en) * | 2009-11-12 | 2013-04-17 | 英华达(上海)电子有限公司 | Portable massager and equipment with audio function |
| CN102543151A (en) * | 2011-12-21 | 2012-07-04 | 边仿 | MP3 player with headphone amplifier card capable of being replaced |
| CN102694506A (en) * | 2012-06-06 | 2012-09-26 | 国光电器股份有限公司 | Audio-frequency amplifier system powered based on power supply of computer USB (Universal Serial Bus) power source and integration of USB audio card |
| CN105554611A (en) * | 2014-12-29 | 2016-05-04 | 北京小鸟听听科技有限公司 | Earphone and implementation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070523 |