CN216490833U - Multifunctional live broadcast sound card circuit capable of realizing anti-interference - Google Patents
Multifunctional live broadcast sound card circuit capable of realizing anti-interference Download PDFInfo
- Publication number
- CN216490833U CN216490833U CN202123288166.2U CN202123288166U CN216490833U CN 216490833 U CN216490833 U CN 216490833U CN 202123288166 U CN202123288166 U CN 202123288166U CN 216490833 U CN216490833 U CN 216490833U
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal processing
- live broadcast
- processing circuit
- sound card
- 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.)
- Active
Links
Images
Landscapes
- Circuit For Audible Band Transducer (AREA)
Abstract
The utility model discloses a can realize anti-interference multi-functional live sound card circuit, including electric capacity wheat input circuit, MCU audio decoding circuit, audio signal processing circuit, mix and amplify signal processing circuit and output signal processing circuit, electric capacity wheat input circuit passes through MCU audio decoding circuit and is connected with audio signal processing circuit electricity, audio signal processing circuit passes through to mix and amplifies signal processing circuit and is connected with the output signal processing circuit electricity, in this can realize anti-interference multi-functional live sound card circuit, through MCU audio decoding circuit and self-identification earphone control circuit, can realize the synchronous high-efficient output of a plurality of live broadcast audio input, live broadcast efficiency and live broadcast effect have been improved, through monitoring power amplifier earphone circuit, live broadcast interference between the different live broadcast equipment when having reduced live broadcast, single-channel live broadcast output audio can be regulated and controlled, the reliability of sound card has been improved, Compatibility, utility, and extensibility.
Description
Technical Field
The utility model relates to a power electronics technical field, concretely relates to can realize anti-jamming multi-functional live sound card circuit.
Background
Present live sound card often only is provided with an audio signal output interface, if the live of many platforms then needs a plurality of live sound cards, and mutual independence between every live sound card, wherein audio signal can not be synchronous between every live sound card, if the change sound audio signal of one of them live sound card can not transmit to the live platform of other ways simultaneously and go, mutual interference is big between the many live devices, can not carry out the problem of reliable and stable live in step, cause the same pronunciation of many platforms and other audio signal of difference to cause user experience poor. When having live many live broadcast equipment of live sound card connection among the traditional technical scheme and broadcasting directly, mutual interference is big between many live broadcast equipment, can not carry out the problem of reliable and stable live broadcast in step.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome foretell not enough, provide a can realize anti-interference multi-functional live sound card circuit.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a multifunctional live broadcast sound card circuit capable of realizing anti-interference comprises a condenser microphone input circuit, an MCU audio decoding circuit, an audio signal processing circuit, a mixed amplification signal processing circuit and an output signal processing circuit, wherein the condenser microphone input circuit is electrically connected with the audio signal processing circuit through the MCU audio decoding circuit, and the audio signal processing circuit is electrically connected with the output signal processing circuit through the mixed amplification signal processing circuit;
the audio signal processing circuit comprises a live broadcast earphone input circuit and a DAC stereo circuit, and the MCU audio decoding circuit is electrically connected with the mixed amplification signal processing circuit through the live broadcast earphone input circuit and the DAC stereo circuit respectively.
Preferably, the output signal processing circuit comprises a monitoring power amplifier earphone circuit and a power amplifier circuit, and the mixed amplification signal processing circuit is respectively electrically connected with the monitoring power amplifier earphone circuit and the power amplifier circuit.
Preferably, a total volume control circuit is further arranged between the mixed amplification signal processing circuit and the power amplification circuit.
Preferably, the MCU audio decoding circuit is further connected to a background sound AUX input circuit.
Preferably, a self-recognition earphone control circuit is arranged between the live broadcast earphone input circuit and the MCU audio decoding circuit.
The utility model has the advantages that: in this can realize anti-interference multi-functional live sound card circuit:
1. through the MCU audio decoding circuit and the self-recognition earphone control circuit, the synchronous and efficient output of a plurality of live broadcast audios from one live broadcast audio input can be realized, and the live broadcast efficiency and the live broadcast effect are improved;
2. through monitoring power amplifier headphone circuit, the live broadcast interference between different live broadcast devices when having reduced the live broadcast, the live broadcast output audio frequency of one way can be regulated and control, has improved reliability, compatibility, practicality and the expansibility of live broadcast sound card.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a schematic circuit diagram of the monitoring power amplifier earphone circuit of the present invention;
fig. 3 is a schematic circuit diagram of the self-recognition earphone control circuit of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1: a multifunctional live broadcast sound card circuit capable of realizing anti-interference comprises a condenser microphone input circuit 1, an MCU audio decoding circuit 3, an audio signal processing circuit, a mixed amplification signal processing circuit 5 and an output signal processing circuit, wherein the condenser microphone input circuit 1 is electrically connected with the audio signal processing circuit through the MCU audio decoding circuit 3, and the audio signal processing circuit is electrically connected with the output signal processing circuit through the mixed amplification signal processing circuit 5; the audio signal processing circuit comprises a live broadcast earphone input circuit 4 and a DAC stereo circuit 6, and the MCU audio decoding circuit 3 is electrically connected with the mixed amplification signal processing circuit 5 through the live broadcast earphone input circuit 4 and the DAC stereo circuit 6 respectively; the output signal processing circuit comprises a monitoring power amplifier earphone circuit 7 and a power amplifier circuit 10, and the mixed amplification signal processing circuit 5 is respectively and electrically connected with the monitoring power amplifier earphone circuit 7 and the power amplifier circuit 10; a total volume control circuit 8 is also arranged between the mixed amplification signal processing circuit 5 and the power amplifier circuit 10; the MCU audio decoding circuit 3 is also connected with a background sound AUX input circuit 2; and a self-recognition earphone control circuit 9 is arranged between the live broadcast earphone input circuit 4 and the MCU audio decoding circuit 3.
The MCU audio decoding circuit 3 generates an audio decoding signal according to the audio signal of the condenser microphone input circuit 1 and the audio signal input by the background sound AUX. The audio signal processing circuit comprises a live broadcast earphone input circuit 4 and a DAC stereo circuit 6 which are both connected with the mixed amplification signal processing circuit 5, and the mixed amplification signal processing circuit 5 performs power amplification processing on audio output signals output by the output signal processing circuits (a monitoring power amplification earphone circuit 7 and a power amplification circuit 10) to generate and output monitoring audio signals and power amplification audio signals. The MCU audio decoding circuit 3 is also connected with a self-recognition earphone control circuit 9, is connected with the live earphone input circuit 4 and the mixed amplification signal processing circuit 5, and is configured into a processing circuit of a monitoring power amplifier earphone circuit 7. The output signal processing circuit comprises a total volume control, is connected with the DAC stereo output and is configured to carry out volume adjustment on the audio signal of the power amplifier circuit 10 so as to generate an adjusted audio signal; the monitoring power amplifier earphone circuit 7 is connected with the mixed amplification signal processing circuit 5, is configured to transmit an audio output signal of the monitoring power amplifier earphone circuit 7, and generates a connection detection signal according to the state of the accessed live broadcast equipment.
As shown in fig. 2: the monitoring and power amplifying earphone circuit 7 comprises a first integrated circuit U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R6, an eighth resistor R6, a ninth resistor R6, a tenth resistor R6, an eleventh resistor R6, a twelfth resistor R6, a first capacitor C6, a second capacitor C6, a third capacitor C6, a fourth capacitor C6, a fifth capacitor C6, a sixth capacitor C6, a seventh capacitor C6, an eighth capacitor C6 and a potentiometer P6, wherein the model of the first integrated circuit U6 is AD 6, the first end of the first integrated circuit U6 is grounded, the second end of the first integrated circuit U6 is respectively connected with the eleventh resistor R6 and the twelfth capacitor R6, a thirteenth integrated circuit U6 is grounded through the fifth resistor C6, the fourth end of the thirteenth integrated circuit U6 and the seventh integrated circuit, the fourth end of the thirteenth resistor C6 is grounded, the seventh terminal of the first integrated circuit U1 is connected to the eighth terminal of the first integrated circuit U1 through a sixth capacitor C6, the ninth terminal of the first integrated circuit U1 is grounded through a third capacitor C3, the ninth terminal of the first integrated circuit U1 is externally connected to a 5V dc power supply through a tenth resistor R10, the ninth terminal of the first integrated circuit U1 is grounded through a fifth capacitor C5 and a fourth capacitor C4, respectively, the ninth terminal of the first integrated circuit U1 is connected to the tenth terminal of the first integrated circuit U1 through a series circuit composed of an eighth resistor R8 and a seventh resistor R7, the tenth terminal of the first integrated circuit U1 is grounded, the tenth terminal of the first integrated circuit U1 is connected to the eleventh terminal of the first integrated circuit U1 through a series circuit composed of a seventh resistor R7 and a sixth resistor R6, the eleventh terminal of the first integrated circuit U1 is connected to the twelfth terminal of the first integrated circuit U1 through a sixth resistor R9368 and a twelfth resistor R38742, a tenth end of the first integrated circuit U1 is connected to a series circuit formed by the fourth resistor R4, the third resistor R3, the first capacitor C1 and the first resistor R1, a thirteenth end of the first integrated circuit U1 is connected to the third resistor R3 and the fourth resistor R4, a tenth end of the first integrated circuit U1 is grounded, a ground end of the potentiometer P1 is grounded, one end of the potentiometer P1 is connected to the first capacitor C1 and the first resistor R1, the other end of the potentiometer P1 is connected to the eighth capacitor C8 and the second resistor R2, and a second end of the first integrated circuit U1 is connected to a series circuit formed by the eleventh resistor R11, the eighth capacitor C8 and the second resistor R2.
As shown in fig. 3: the self-recognition earphone control circuit 9 comprises a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a ninth capacitor C9, a tenth capacitor C10, a second integrated circuit U2 and an earphone PJ1, wherein the model of the second integrated circuit U2 is MAX9812, the sixth terminal of the second integrated circuit U2 is connected to the ground terminal of the earphone PJ1, the fourth terminal of the second integrated circuit U2 is connected to the trigger terminal of the earphone PJ1, the fourth terminal of the second integrated circuit U2 is externally connected to a 5V dc voltage power supply through the fourteenth resistor R14 and the seventeenth resistor R14, one terminal of the ninth capacitor C14 is grounded, the other terminal of the ninth capacitor C14 is connected to the fourteenth resistor R14 and the seventeenth resistor R14, the second terminal of the second integrated circuit U14 is grounded through the first resistor 14, and the second terminal of the second integrated circuit U14 is grounded, the first end of the second integrated circuit U2 is connected with the MCU audio decoding circuit through a series circuit composed of a twentieth resistor R20 and a tenth capacitor C10, the left and right channels of the headphone PJ1 are grounded through an eighteenth resistor R18 and a nineteenth resistor R19, respectively, and the left and right channels of the headphone PJ1 are connected with the MCU audio decoding circuit through a fifteenth resistor R15 and a sixteenth resistor R16, respectively. The control circuit 9 of the self-identification earphone PJ1 has multiple channels and is used for carrying out identification output of multiple channels of earphones PJ1, thereby facilitating the output of multiple channels of audio.
In light of the above, the present invention is not limited to the above embodiments, and various changes and modifications can be made by the worker without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. The utility model provides a can realize anti-interference multi-functional live sound card circuit which characterized in that: the microphone comprises a condenser microphone input circuit, an MCU audio decoding circuit, an audio signal processing circuit, a mixed amplification signal processing circuit and an output signal processing circuit, wherein the condenser microphone input circuit is electrically connected with the audio signal processing circuit through the MCU audio decoding circuit;
the audio signal processing circuit comprises a live broadcast earphone input circuit and a DAC stereo circuit, and the MCU audio decoding circuit is electrically connected with the mixed amplification signal processing circuit through the live broadcast earphone input circuit and the DAC stereo circuit respectively.
2. The multifunctional live broadcast sound card circuit capable of realizing interference resistance according to claim 1, characterized in that: the output signal processing circuit comprises a monitoring power amplifier earphone circuit and a power amplifier circuit, and the mixed amplification signal processing circuit is respectively electrically connected with the monitoring power amplifier earphone circuit and the power amplifier circuit.
3. The multifunctional live broadcast sound card circuit capable of realizing interference resistance according to claim 2, wherein: and a total volume control circuit is also arranged between the mixed amplification signal processing circuit and the power amplifier circuit.
4. The multifunctional live broadcast sound card circuit capable of realizing interference resistance according to claim 1, characterized in that: the MCU audio decoding circuit is also connected with a background sound AUX input circuit.
5. The multifunctional live broadcast sound card circuit capable of realizing interference resistance according to claim 1, characterized in that: and a self-recognition earphone control circuit is arranged between the live broadcast earphone input circuit and the MCU audio decoding circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123288166.2U CN216490833U (en) | 2021-12-25 | 2021-12-25 | Multifunctional live broadcast sound card circuit capable of realizing anti-interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123288166.2U CN216490833U (en) | 2021-12-25 | 2021-12-25 | Multifunctional live broadcast sound card circuit capable of realizing anti-interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216490833U true CN216490833U (en) | 2022-05-10 |
Family
ID=81427615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123288166.2U Active CN216490833U (en) | 2021-12-25 | 2021-12-25 | Multifunctional live broadcast sound card circuit capable of realizing anti-interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216490833U (en) |
-
2021
- 2021-12-25 CN CN202123288166.2U patent/CN216490833U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW392416B (en) | Noise cancellation system for active headsets | |
| CN103237281B (en) | The earphone line control circuit of a kind of mobile terminal and line control method | |
| CA2839475A1 (en) | Audio signal adapter device | |
| CN103152670B (en) | Audio frequency processing circuit and earphone | |
| CN214381357U (en) | Microphone noise suppression circuit, device and microphone | |
| US5745859A (en) | Portable radio telephone headphone | |
| CN216490833U (en) | Multifunctional live broadcast sound card circuit capable of realizing anti-interference | |
| CN106953608B (en) | Power amplifier device | |
| WO2017197749A1 (en) | Power taking method, noise reduction earphone, and playback device | |
| US20090060226A1 (en) | Audio circuit for display | |
| US8103021B2 (en) | Audio reproducing apparatus | |
| CN212936178U (en) | Audio output circuit, audio device and sound box | |
| CN209267536U (en) | A kind of circuit and its device of portable preamplifier | |
| CN102538952A (en) | High-sensitivity thunder test circuit | |
| US10838683B2 (en) | Digitally controlled microphone with audio compressor | |
| CN217588419U (en) | Noise elimination circuit of air purifier | |
| CN203136138U (en) | Audio signal input converting circuit and audio player | |
| CN202634678U (en) | Noise-reduction circuit | |
| US20100183166A1 (en) | External car amplifier capable of producing high power | |
| CN109347448A (en) | A kind of circuit and its device of portable preamplifier | |
| CN214799872U (en) | Moving coil microphone audio amplification circuit and earphone | |
| CN214154470U (en) | Digital filter circuit of sound system | |
| CN104010260A (en) | Two-line MEMS microphone | |
| CN112637735B (en) | Board-level noise elimination circuit of analog signal and audio output equipment | |
| CN215376922U (en) | Noise reduction system and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |