CN220798527U - Audio crosstalk optimization circuit - Google Patents
Audio crosstalk optimization circuit Download PDFInfo
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Abstract
The present utility model provides an audio crosstalk optimization circuit, comprising: the decoding module is provided with a left channel output port and a right channel output port; a first connector connected to the left channel output port; the first RC grounding circuit is connected between the first connector and the left channel output port; the second connector is connected with the right sound channel output port; the second RC grounding circuit is connected between the second connector and the right channel output port, and the first RC grounding circuit and the second RC grounding circuit are added between the first connector and the left channel output port and between the second connector and the right channel output port, so that noise signals can be well filtered and grounded.
Description
Technical Field
The utility model relates to the technical field of audio output, in particular to an audio crosstalk optimization circuit.
Background
Audio output devices refer to devices that convert digital signals into analog sound signals and transmit the analog sound signals to external speakers or headphones, and common audio output devices include: speakers, which are generally large-sized acoustic devices for amplifying an audio signal and playing it as high-quality sound, and speakers, which can be connected to an audio source device such as a computer, a cellular phone, an acoustic system, etc., by wired or wireless means; headphones are small audio output devices, commonly used for individuals to listen to music, watch video, or talk, and may be connected to the audio source device by wired or bluetooth wireless means, etc., and provide a high quality audio experience.
In the related art, the conventional earphone and speaker output audio schemes directly extract audio signals from audio output ports of audio sources (such as mobile phones, computers, televisions, etc.), and then send the signals to corresponding earphone or speaker loads for driving.
Disclosure of utility model
Accordingly, the present utility model is directed to an audio crosstalk optimizing circuit, which is capable of reducing output noise of an earphone and a speaker and turning off pop sound that may exist.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model provides an audio crosstalk optimization circuit, comprising:
the decoding module is provided with a left channel output port and a right channel output port;
a first connector connected to the left channel output port;
A first RC ground circuit connected between the first connector and the left channel output port;
a second connector connected to the right channel output port;
a second RC ground circuit connected between the second connector and the right channel output port.
In some embodiments, the decoding module includes an audio decoding chip U1.
In some embodiments, the audio decoding chip U1 is an audio decoding chip of model SN 6140.
In some embodiments, the first connector includes a connector J1, the connector J1 is provided with a right channel positive input and a right channel negative input, the right channel output is provided with a right channel positive output and a right channel negative output, the right channel positive input is connected with the right channel positive output, and the right channel negative input is connected with the right channel negative output.
In some embodiments, a resistor R23 and a capacitor C45 are connected between the right channel positive input terminal and the right channel positive output terminal, a first end of the resistor R23 is connected between the right channel positive input terminal and the right channel positive output terminal, a second end of the resistor R23 is connected with a first end of the capacitor C45, and a second end of the capacitor C45 is grounded.
In some embodiments, a resistor R24 and a capacitor C46 are connected between the right-channel negative input terminal and the right-channel negative output terminal, a first end of the resistor R24 is connected between the right-channel negative input terminal and the right-channel negative output terminal, a second end of the resistor R24 is connected with a first end of the capacitor C46, and a second end of the capacitor C46 is grounded.
In some embodiments, the second connector includes a connector J2, the connector J2 is provided with a left channel positive input end and a left channel negative input end, the left channel output port is provided with a left channel positive output end and a left channel negative output end, the left channel positive input end is connected with the left channel positive output end, and the left channel negative input end is connected with the left channel negative output end.
In some embodiments, a resistor R30 and a capacitor C51 are connected between the left positive input terminal and the left positive output terminal, a first terminal of the resistor R30 is connected between the left positive input terminal and the left positive output terminal, a second terminal of the resistor R30 is connected with a first terminal of the capacitor C51, and a second terminal of the capacitor C51 is grounded.
In some embodiments, a resistor R27 and a capacitor C50 are connected between the left negative input end and the left negative output end, a first end of the resistor R27 is connected between the left negative input end and the left negative output end, a second end of the resistor R27 is connected with a first end of the capacitor C50, and a second end of the capacitor C50 is grounded.
According to the audio crosstalk optimization circuit provided by the embodiment of the utility model, the first RC grounding circuit and the second RC grounding circuit are added between the first connector and the left channel output port and between the second connector and the right channel output port, so that noise signals can be well filtered and grounded by the first RC grounding circuit and the second RC grounding circuit, the subsequent re-correction time and a large amount of verification cost caused by crosstalk problems can be avoided in the design process, and meanwhile, the scheme can also correspondingly reduce output noise of an earphone and a loudspeaker and pop sound possibly existing when the earphone is turned on, so that the tone quality is purer.
Drawings
FIG. 1 is a block diagram of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a circuit according to an embodiment of the present utility model;
Reference numerals illustrate: 100. a decoding module; 110. a left channel output port; 120. a right channel output port; 200. a first connector; 300. a first RC ground circuit; 400. a second connector; 500. and a second RC grounding circuit.
Detailed Description
The technical scheme provided by the utility model has the following overall thought:
referring to fig. 1 and 2, an audio crosstalk optimization circuit includes:
A decoding module 100, the decoding module 100 being provided with a left channel output port 110 and a right channel output port 120, the decoding module 100 being configured to provide decoding and output of an audio signal;
A first connector 200, the first connector 200 being connected to the left channel output port 110, the first connector 200 being for transmitting an audio signal of a left channel;
A first RC grounding circuit 300, the first RC grounding circuit 300 being connected between the first connector 200 and the left channel output port 110, the first RC grounding circuit 300 being for reducing crosstalk between the left channel audio signal and ground;
A second connector 400, the second connector 400 being connected to the right channel output port 120, the second connector 400 being for transmitting an audio signal of a right channel;
The second RC grounding circuit 500, the second RC grounding circuit 500 is connected between the second connector 400 and the right channel output port 120, and the second RC grounding circuit 500 is used for reducing crosstalk between the right channel audio signal and ground.
Specifically, in the audio crosstalk optimization circuit provided by the embodiment of the utility model, by adding the first RC grounding circuit 300 and the second RC grounding circuit 500 between the first connector 200 and the left channel output port 110 and between the second connector 400 and the right channel output port 120, the first RC grounding circuit 300 and the second RC grounding circuit 500 can well filter and set up noise signals to the ground, so that the subsequent time for re-modification and a large amount of verification cost caused by crosstalk problems can be avoided in the design process, and meanwhile, the scheme can correspondingly reduce the output noise of the earphone and the loudspeaker and pop sound possibly existing when the earphone and the loudspeaker are turned off, so that the tone quality is purer.
As will be appreciated, an RC ground circuit for reducing crosstalk between an audio signal and ground to improve the quality of the audio output is generally composed of a resistor (R) and a capacitor (C), in an audio system, when an audio signal enters a ground through a connector, crosstalk and noise are generated, the RC ground circuit prevents the interference signals from entering the ground by placing a resistor and a capacitor before the audio signal enters the ground, and during shutdown and startup, the charge in the circuit may be suddenly released or accumulated due to sudden power cut-off or restoration, abnormal current surge is generated, and thus "pop" sound is generated, and by adding the RC ground circuit to the audio signal path, the current surge is limited and smoothly dispersed into the capacitor, thereby reducing or eliminating the generation of the "pop" sound.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 2, the decoding module 100 includes an audio decoding chip U1, where the audio decoding chip U1 is an audio decoding chip with a model SN6140, and the audio decoding chip U1 can convert a digital audio signal into an analog audio signal and provide a high-quality audio output.
Referring to fig. 2, the first connector 200 includes a connector J1, where the connector J1 is provided with a RIGHT channel positive input end and a RIGHT channel negative input end, in fig. 2, the RIGHT channel positive input end is RIGHTP ports, the RIGHT channel negative input end is RIGHTN ports, the RIGHT channel output end is provided with a RIGHT channel positive output end and a RIGHT channel negative output end, in fig. 2, the RIGHT channel positive output end is PORTG _right_p ports, the RIGHT channel negative output end is PORTG _right_n ports, the RIGHT channel positive input end is connected with the RIGHT channel positive output end, and the RIGHT channel negative input end is connected with the RIGHT channel negative output end, so that transmission and connection of audio signals are achieved.
Further, a resistor R23 and a capacitor C45 are connected between the right-channel positive input end and the right-channel positive output end, a first end of the resistor R23 is connected between the right-channel positive input end and the right-channel positive output end, a second end of the resistor R23 is connected with a first end of the capacitor C45, a second end of the capacitor C45 is grounded, and the resistor R23 and the capacitor C45 are connected in series and grounded to form an RC grounding circuit.
Further, a resistor R24 and a capacitor C46 are connected between the right-channel negative input end and the right-channel negative output end, a first end of the resistor R24 is connected between the right-channel negative input end and the right-channel negative output end, a second end of the resistor R24 is connected with a first end of the capacitor C46, a second end of the capacitor C46 is grounded, the resistor R24 and the capacitor C46 are connected in series and grounded, and an RC grounding circuit is formed, wherein the RC grounding circuit formed by the resistor R23 and the capacitor C45 and the RC grounding circuit formed by the resistor R24 and the capacitor C46 are combined to form the first RC grounding circuit 300.
Further, the second connector 400 includes a connector J2, the connector J2 is provided with a left channel positive input end and a left channel negative input end, the left channel output port 110 is provided with a left channel positive output end and a left channel negative output end, the left channel positive input end is connected with the left channel positive output end, the left channel negative input end is connected with the left channel negative output end, similarly to the first connector 200, the second connector 400 is designed to realize transmission and connection of audio signals, the input and output of the left channel are connected through the positive electrode and the negative electrode, and the audio signals can be transmitted from the input to the output, so that the playing of the sound is realized.
Further, a resistor R30 and a capacitor C51 are connected between the positive input end of the left sound channel and the positive output end of the left sound channel, a first end of the resistor R30 is connected between the positive input end of the left sound channel and the positive output end of the left sound channel, a second end of the resistor R30 is connected with a first end of the capacitor C51, a second end of the capacitor C51 is grounded, the resistor R30 and the capacitor C51 are connected in series and grounded, and an RC grounding circuit is formed.
Further, a resistor R27 and a capacitor C50 are connected between the left-channel negative input end and the left-channel negative output end, a first end of the resistor R27 is connected between the left-channel negative input end and the left-channel negative output end, a second end of the resistor R27 is connected with a first end of the capacitor C50, a second end of the capacitor C50 is grounded, the resistor R27 and the capacitor C50 are connected in series and are grounded, and an RC grounding circuit is formed, wherein the RC grounding circuit formed by the resistor R30 and the capacitor C51 and the RC grounding circuit formed by the resistor R27 and the capacitor C50 are combined to form a second RC grounding circuit 500.
While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present utility model without departing from the spirit or scope of the embodiments of the utility model. Thus, if such modifications and variations of the embodiments of the present utility model fall within the scope of the claims and the equivalents thereof, the present utility model is also intended to include such modifications and variations.
Claims (9)
1. An audio crosstalk optimization circuit, comprising:
the decoding module is provided with a left channel output port and a right channel output port;
a first connector connected to the left channel output port;
A first RC ground circuit connected between the first connector and the left channel output port;
a second connector connected to the right channel output port;
a second RC ground circuit connected between the second connector and the right channel output port.
2. The audio crosstalk optimization circuit according to claim 1, characterized in that said decoding module comprises an audio decoding chip U1.
3. The audio crosstalk optimization circuit according to claim 2, wherein said audio decoding chip U1 is an audio decoding chip of model SN 6140.
4. The audio crosstalk optimization circuit of claim 1, wherein the first connector comprises a connector J1, wherein the connector J1 is provided with a right channel positive input and a right channel negative input, wherein the right channel output is provided with a right channel positive output and a right channel negative output, wherein the right channel positive input is connected with the right channel positive output, and wherein the right channel negative input is connected with the right channel negative output.
5. The audio crosstalk optimization circuit of claim 4, wherein a resistor R23 and a capacitor C45 are connected between the right channel positive input terminal and the right channel positive output terminal, a first terminal of the resistor R23 is connected between the right channel positive input terminal and the right channel positive output terminal, a second terminal of the resistor R23 is connected to a first terminal of the capacitor C45, and a second terminal of the capacitor C45 is grounded.
6. The audio crosstalk optimization circuit of claim 4, wherein a resistor R24 and a capacitor C46 are connected between the right channel negative input terminal and the right channel negative output terminal, a first terminal of the resistor R24 is connected between the right channel negative input terminal and the right channel negative output terminal, a second terminal of the resistor R24 is connected to a first terminal of the capacitor C46, and a second terminal of the capacitor C46 is grounded.
7. The audio crosstalk optimization circuit of claim 1, wherein the second connector comprises a connector J2, wherein the connector J2 is provided with a left channel positive input and a left channel negative input, wherein the left channel output port is provided with a left channel positive output and a left channel negative output, wherein the left channel positive input is connected with the left channel positive output, and wherein the left channel negative input is connected with the left channel negative output.
8. The audio crosstalk optimization circuit of claim 7, wherein a resistor R30 and a capacitor C51 are connected between the left channel positive input terminal and the left channel positive output terminal, a first terminal of the resistor R30 is connected between the left channel positive input terminal and the left channel positive output terminal, a second terminal of the resistor R30 is connected to a first terminal of the capacitor C51, and a second terminal of the capacitor C51 is grounded.
9. The audio crosstalk optimization circuit of claim 7, wherein a resistor R27 and a capacitor C50 are connected between the left channel negative input terminal and the left channel negative output terminal, a first end of the resistor R27 is connected between the left channel negative input terminal and the left channel negative output terminal, a second end of the resistor R27 is connected to a first end of the capacitor C50, and a second end of the capacitor C50 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322550182.7U CN220798527U (en) | 2023-09-19 | 2023-09-19 | Audio crosstalk optimization circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322550182.7U CN220798527U (en) | 2023-09-19 | 2023-09-19 | Audio crosstalk optimization circuit |
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| Publication Number | Publication Date |
|---|---|
| CN220798527U true CN220798527U (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322550182.7U Active CN220798527U (en) | 2023-09-19 | 2023-09-19 | Audio crosstalk optimization circuit |
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| Country | Link |
|---|---|
| CN (1) | CN220798527U (en) |
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2023
- 2023-09-19 CN CN202322550182.7U patent/CN220798527U/en active Active
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