CN209803773U - Audio conversion device based on USB protocol - Google Patents
Audio conversion device based on USB protocol Download PDFInfo
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- CN209803773U CN209803773U CN201921005577.6U CN201921005577U CN209803773U CN 209803773 U CN209803773 U CN 209803773U CN 201921005577 U CN201921005577 U CN 201921005577U CN 209803773 U CN209803773 U CN 209803773U
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Abstract
The utility model is suitable for an electronic equipment technical field provides an audio conversion equipment based on USB agreement, including the USB interface, audio code conversion module and audio interface etc, the USB interface can be pegged graft on computer equipment's USB port, its audio interface can external audio amplifier, earphone or microphone etc., and then can receive the USB signal of computer, communication through the signal, processing such as decoding and audio signal conversion, can be with USB standard signal, the conversion of the codec through processing chip U1 is into the better audio signal of tone quality, through LINE OUT submodule piece and audio interface, can be connected to corresponding audio equipment and play; at the same time, the sound of the microphone is also input to the computer through the MIC IN sub-module. The sound card can be used for the situation that the microphone cannot be used by external sound boxes of certain computers and the sound card of the computer cannot damage the sound and the like, the independent processing chip U1 is used for finishing the work of reducing the noise of the sound quality, the sound quality can be improved, the sound is clearer, the sound card can be used in a plug-and-play mode, and the sound card is very convenient and fast.
Description
Technical Field
The utility model belongs to the technical field of electronic equipment, concretely relates to audio conversion equipment based on USB agreement.
Background
Along with the development of economy and the progress of science and technology, the application of computers is more and more extensive, and in order to take into account the demands of all aspects, the USB standard serial ports are mostly used for the mainboard of the computer.
The common computer equipment has to have the functions of stereo interface output and microphone input, but like a PS4 game machine, because the stereo interface output is not available, the external sound box can not be connected, like a single TYPE-C interface notebook of MAC BOOK, the microphone can not be used, like the situation that the self-contained sound card of the computer is damaged and then no sound exists, or when the tone quality of the built-in sound card is not good, the external sound card is needed in the situations.
In practice, the external sound card is troublesome and has high cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome not enough among the above-mentioned prior art, provide an audio frequency conversion equipment based on USB agreement.
The utility model discloses a realize like this: the audio conversion device based on the USB protocol comprises a USB interface, an audio code conversion module and an audio interface;
The audio code conversion module comprises a processing chip U1, a memory U2, a LINE OUT submodule and an MIC IN submodule, wherein the model of the processing chip U1 is HS100B, and terminals of the memory U2 are respectively connected with a DW pin, a DR pin, an SK pin and a CS pin of the processing chip U1;
One end of the LINE OUT submodule is connected with an LOL pin and an LOR pin of the processing chip U1, and the other end of the LINE OUT submodule is connected with the audio interface;
one end of the MIC IN sub-module is connected with an MIC IN pin and a VBIAS pin of the processing chip U1, and the other end of the MIC IN sub-module is connected with the audio interface;
and the terminal of the USB interface is connected with the USBDM pin and the USBDP pin of the processing chip U1.
as a preferred scheme of the utility model, still include two LED pilot lamps, two LED pilot lamps respectively with handle LED0 pin and the LEDR pin connection of chip U1.
As an optimal solution of the utility model, still include 4 control button, 4 control button respectively with handle chip U1's VOLUP pin, VOLDN pin, MUTE REC pin and MUTEP pin connection.
As an optimal solution of the present invention, the LINE OUT submodule includes a first branch and a second branch connected to the LOR pin and the LOL pin, respectively.
As a preferred scheme of the utility model, first branch circuit is including the inductance L7 that is used for anti low frequency interference, with inductance L7 series connection be used for impedance matching's resistance R8, be used for the electric capacity C9 of filtering and be connected with inductance L7's one end be used for anti-interference bypass electric capacity C14, electric capacity C9 with the LOR pin is connected, bypass electric capacity C14 ground connection.
As a preferred aspect of the present invention, the second branch includes an inductor L8 for resisting low frequency interference, a resistor R10 for impedance matching connected in series with an inductor L8, a capacitor C10 for filtering connected in series with a resistor R10, and a bypass capacitor C13 for resisting interference connected to one end of the inductor L8, the resistor R10 is connected to the LOL pin, and the bypass capacitor C13 is grounded.
As a preferred aspect of the present invention, the MIC IN submodule includes an inductor L9 for anti-low frequency interference, a resistor R12 for impedance matching connected to one end of an inductor L9, a capacitor C12 for filtering connected IN series with the resistor R12, resistors R14 and R13 for impedance matching connected to one end of the inductor L9, and a bypass capacitor C20 for anti-interference connected to one end of the inductor L9, wherein the bypass capacitor C20 is grounded, the capacitor C12 is connected to the MIC IN pin, and the resistor R13 is connected to the VBIAS pin.
As a preferred embodiment of the present invention, the memory U2 has a model number of 93C 46.
The utility model provides a pair of audio conversion equipment based on USB agreement, compared with the prior art, its USB interface can peg graft on computer equipment's USB port, its audio interface can external audio amplifier, earphone or microphone etc. and then can receive the USB signal of computer, through the communication of signal, processing such as decoding and audio signal conversion, can be with USB standard signal, the code-decode conversion through processing chip U1 is into the audio signal that tone quality is better, through LINE OUT submodule piece and audio interface, can be connected to corresponding audio equipment and play; at the same time, the sound of the microphone is also input to the computer through the MIC IN sub-module. The sound card can be used for the situation that the microphone cannot be used by external sound boxes of certain computers and the sound card of the computer cannot damage the sound and the like, the independent processing chip U1 is used for finishing the work of reducing the noise of the sound quality, the sound quality can be improved, the sound is clearer, the sound card can be used in a plug-and-play mode, the sound card is very convenient and fast to use, and the use cost is low.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention.
Fig. 1 is a schematic diagram of an audio conversion apparatus based on USB protocol according to an embodiment of the present invention;
Fig. 2 is a schematic circuit diagram of an audio conversion apparatus based on USB protocol according to an embodiment of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
Referring to fig. 1-2, fig. 1 is a schematic diagram of an audio conversion device based on a USB protocol according to the present embodiment, and fig. 2 is a schematic circuit diagram of the audio conversion device based on the USB protocol according to the present embodiment;
Specifically, the audio conversion device based on the USB protocol includes a USB interface, an audio transcoding module, and an audio interface;
The audio code conversion module comprises a processing chip U1, a Memory U2(EEPROM, Electrically Erasable and rewritable Read-Only Memory U2, English: Electrically-Erasable and Programmable Read-Only Memory), a LINE OUT submodule and a MIC IN submodule, wherein the model of the processing chip U1 is HS100B, terminals of the Memory U2 are respectively connected with a DW pin, a DR pin, an SK pin and a CS pin of the processing chip U1, and the model of the Memory U2 is 93C 46.
One end of the LINE OUT submodule is connected with an LOL pin and an LOR pin of the processing chip U1, and the other end of the LINE OUT submodule is connected with the audio interface;
one end of the MIC IN sub-module is connected with an MIC IN pin of the processing chip U1, and the other end of the MIC IN sub-module is connected with the audio interface;
And the terminal of the USB interface is connected with the USBDM pin and the USBDP pin of the processing chip U1.
in the foregoing, specifically, in the audio conversion apparatus based on the USB protocol, the USB interface may be inserted into a USB port of a computer device, and the audio interface may be externally connected to a sound box, an earphone or a microphone, so as to receive a USB signal of the computer, and by processing the signal, such as signal communication, decoding and audio signal conversion, the USB standard signal may be converted into an audio signal with better tone quality through the codec of the processing chip U1, and may be connected to a corresponding audio device through the LINE OUT sub-module and the audio interface for playing; at the same time, the sound of the microphone is also input to the computer through the MIC IN sub-module. The sound card can be used for the situation that the microphone cannot be used by external sound boxes of certain computers and the sound card of the computer cannot damage the sound and the like, the independent processing chip U1 is used for finishing the work of reducing the noise of the sound quality, the sound quality can be improved, the sound is clearer, the sound card can be used in a plug-and-play mode, the sound card is very convenient and fast to use, and the use cost is low.
as a preferred scheme of the utility model, still include two LED pilot lamps, two LED pilot lamps respectively with handle LED0 pin and the LEDR pin connection of chip U1.
In the foregoing, specifically, the LED indicator can play an indicating role, so that a user can visually know the working condition of the audio conversion device based on the USB protocol.
as an optimal solution of the utility model, still include 4 control button, 4 control button respectively with handle chip U1's VOLUP pin, VOLDN pin, MUTE REC pin and MUTEP pin connection.
In the above, specifically, the 4 control keys can respectively perform function control of volume up, volume down, recording and playing.
As an optimal solution of the present invention, the LINE OUT submodule includes a first branch and a second branch connected to the LOR pin and the LOL pin, respectively.
As a preferred scheme of the utility model, first branch circuit is including the inductance L7 that is used for anti low frequency interference, with inductance L7 series connection be used for impedance matching's resistance R8, be used for the electric capacity C9 of filtering and be connected with inductance L7's one end be used for anti-interference bypass electric capacity C14, electric capacity C9 with the LOR pin is connected, bypass electric capacity C14 ground connection.
as a preferred aspect of the present invention, the second branch includes an inductor L8 for resisting low frequency interference, a resistor R10 for impedance matching connected in series with an inductor L8, a capacitor C10 for filtering connected in series with a resistor R10, and a bypass capacitor C13 for resisting interference connected to one end of the inductor L8, the resistor R10 is connected to the LOL pin, and the bypass capacitor C13 is grounded.
In the foregoing, specifically, the first branch and the second branch may perform a series of processing on the output audio signal, so as to ensure the quality of the output audio signal.
As a preferred aspect of the present invention, the MIC IN submodule includes an inductor L9 for anti-low frequency interference, a resistor R12 for impedance matching connected to one end of an inductor L9, a capacitor C12 for filtering connected IN series with the resistor R12, resistors R14 and R13 for impedance matching connected to one end of the inductor L9, and a bypass capacitor C20 for anti-interference connected to one end of the inductor L9, wherein the bypass capacitor C20 is grounded, the capacitor C12 is connected to the MIC IN pin, and the resistor R13 is connected to the VBIAS pin.
IN the above, specifically, the MIC IN submodule may perform a series of processing on the input audio signal, so as to avoid the quality of the audio signal received by the processing chip U1.
as a preferred embodiment of the present invention, the memory U2 has a model number of 93C 46.
As a preferred aspect of the present invention, the MIC IN submodule includes a capacitor C12 for filtering and a resistor R12 for impedance matching.
in summary, in the audio conversion apparatus based on the USB protocol provided in this embodiment, the USB interface may be inserted into a USB port of a computer device, and the audio interface may be externally connected to a sound box, an earphone or a microphone, so as to receive a USB signal of the computer, and by processing the signal such as communication, decoding and audio signal conversion, the USB standard signal may be converted into an audio signal with better sound quality through the codec of the processing chip U1, and may be connected to a corresponding audio device for playing through the LINE OUT sub-module and the audio interface; at the same time, the sound of the microphone is also input to the computer through the MIC IN sub-module. The sound card can be used for the situation that the microphone cannot be used by external sound boxes of certain computers and the sound card of the computer cannot damage the sound and the like, the independent processing chip U1 is used for finishing the work of reducing the noise of the sound quality, the sound quality can be improved, the sound is clearer, the sound card can be used in a plug-and-play mode, the sound card is very convenient and fast to use, and the use cost is low.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The audio conversion device based on the USB protocol is characterized by comprising a USB interface, an audio code conversion module and an audio interface;
The audio code conversion module comprises a processing chip U1, a memory U2, a LINE OUT submodule and an MIC IN submodule, wherein the model of the processing chip U1 is HS100B, and terminals of the memory U2 are respectively connected with a DW pin, a DR pin, an SK pin and a CS pin of the processing chip U1;
One end of the LINE OUT submodule is connected with an LOL pin and an LOR pin of the processing chip U1, and the other end of the LINE OUT submodule is connected with the audio interface;
One end of the MIC IN sub-module is connected with an MIC IN pin and a VBIAS pin of the processing chip U1, and the other end of the MIC IN sub-module is connected with the audio interface;
And the terminal of the USB interface is connected with the USBDM pin and the USBDP pin of the processing chip U1.
2. The audio conversion device based on USB protocol according to claim 1, further comprising two LED indicator lights connected to the LED0 pin and the LEDR pin of the processing chip U1, respectively.
3. The audio conversion device according to claim 1, further comprising 4 control buttons, wherein the 4 control buttons are respectively connected to the VOLUP pin, VOLDN pin, MUTE REC pin and MUTE REC pin of the processing chip U1.
4. the audio conversion apparatus based on the USB protocol according to claim 1, wherein the LINE OUT submodule includes a first branch and a second branch connected to the LOR pin and the LOL pin, respectively.
5. The USB protocol-based audio conversion device of claim 4, wherein the first branch comprises an inductor L7 for low frequency interference rejection, a resistor R8 for impedance matching connected in series with the inductor L7, a capacitor C9 for filtering, and a bypass capacitor C14 for interference rejection connected to one end of the inductor L7, wherein a capacitor C9 is connected to the LOR pin, and wherein the bypass capacitor C14 is connected to ground.
6. the audio conversion apparatus based on USB protocol according to claim 5, wherein the second branch comprises an inductor L8 for low frequency interference rejection, a resistor R10 for impedance matching connected in series with an inductor L8, a capacitor C10 for filtering connected in series with a resistor R10, and a bypass capacitor C13 connected to one end of an inductor L8 for interference rejection, the resistor R10 is connected to the LOL pin, and the bypass capacitor C13 is grounded.
7. The USB protocol-based audio conversion apparatus according to claim 1, wherein the MIC IN sub-module comprises an inductor L9 for anti-low frequency interference, a resistor R12 for impedance matching connected to one end of an inductor L9, a capacitor C12 for filtering connected IN series with the resistor R12, resistors R14 and R13 for impedance matching connected to one end of an inductor L9, and a bypass capacitor C20 for anti-interference connected to one end of an inductor L9, wherein the bypass capacitor C20 is grounded, the capacitor C12 is connected to the MIC IN pin, and the resistor R13 is connected to the VBIAS pin.
8. The audio conversion device based on the USB protocol as claimed in claim 1, wherein the memory U2 has a model number of 93C 46.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921005577.6U CN209803773U (en) | 2019-06-27 | 2019-06-27 | Audio conversion device based on USB protocol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921005577.6U CN209803773U (en) | 2019-06-27 | 2019-06-27 | Audio conversion device based on USB protocol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209803773U true CN209803773U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921005577.6U Active CN209803773U (en) | 2019-06-27 | 2019-06-27 | Audio conversion device based on USB protocol |
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|---|---|
| CN (1) | CN209803773U (en) |
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- 2019-06-27 CN CN201921005577.6U patent/CN209803773U/en active Active
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