Headset E-sports earphone audio input and output processing module

Abstract

The utility model discloses an audio input and output processing module for a headset of a headset, which comprises an audio power amplifier module, an audio input interface, an audio output interface and a volume adjusting module, and is characterized in that the audio input interface is connected with the audio output end of the audio power amplifier module; the audio output interface is connected with the audio input interface through the volume adjusting module. According to the utility model, through specially designed input and output interface filter circuit structures, effective filtering can be realized, and the influence of external interference on the tone quality effect is reduced.

Description

Technical Field

[0001] The utility model discloses an e-sports headset, in particular to an audio input and output processing module for a head-mounted e-sports headset, belonging to the technical field of consumer electronic products. Background Art

[0002] Head-mounted wireless headsets are usually connected via Bluetooth to achieve audio data transmission, providing greater freedom of movement for use and avoiding the bondage of cables. They are usually equipped with comfortable ear pads and long battery life, suitable for long-term use.

[0003] E-sports headsets are designed specifically for gamers and usually feature high sound quality, a clear microphone, and a comfortable wearing experience. They can enhance the gaming experience, provide accurate sound effect positioning, and help players better hear in-game sounds and communicate with teammates during intense battles.

[0004] Due to the influence of the structure and the designer's thinking inertia in the existing e-sports headsets, the use effects are often not satisfactory. Moreover, with the use of Bluetooth technology for data transmission, the external interference is more serious, and the sound quality often fails to meet the expected requirements. Summary of the Invention

[0005] Aiming at the problem that the head-mounted e-sports headset in the existing technology is vulnerable to external signal interference, the utility model provides an audio input and output processing module for a head-mounted e-sports headset, which can achieve effective filtering through a specially designed input and output interface filtering circuit structure, reducing the influence of external interference on the sound quality.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an audio input and output processing module for a head-mounted e-sports headset, the processing module includes an audio power amplifier module, an audio input interface, an audio output interface, and a volume adjustment module. The audio input interface is connected to the audio output end of the audio power amplifier module, and the audio output interface is connected to the audio input interface through the volume adjustment module.

[0007] The technical solution adopted by the utility model to solve its technical problems further includes:

[0008] A right-channel input filtering module is connected to the right-channel input terminal of the audio power amplifier module, and a left-channel input filtering module is connected to the left-channel input terminal of the audio power amplifier module. The right-channel input terminal of the audio power amplifier module is the INPR interface and INNR interface of the audio power amplifier module. The right-channel input filtering module includes capacitor C42, capacitor C43, capacitor C44, capacitor C27, capacitor C28, resistor R42, resistor R43, and resistor R44. A capacitor C42 is connected in parallel between the right-channel positive audio signal input line and the right-channel negative audio signal input line. A capacitor C43 is connected between the right-channel positive audio signal input line and the ground. A capacitor C44 is connected between the right-channel negative audio signal input line and the ground. Capacitor C28 and resistor R43 are connected in series on the right-channel positive audio signal input line, and resistor R43 is connected to the INPR interface of the audio power amplifier module. Capacitor C27 and resistor R42 are connected in series on the right-channel negative audio signal input line, and resistor R42 is connected to the INNR interface of the audio power amplifier module. Resistor R44 is connected between the INPR interface of the audio power amplifier module and the ground. The left-channel input terminal of the audio power amplifier module is the INPL interface and INNL interface of the audio power amplifier module. The left-channel input filtering module includes capacitor C40, capacitor C41, capacitor C39, capacitor C34, capacitor C35, resistor R50, resistor R53, and resistor R51. A capacitor C40 is connected in parallel between the left-channel positive audio signal input line and the left-channel negative audio signal input line. A capacitor C39 is connected between the left-channel positive audio signal input line and the ground. A capacitor C41 is connected between the left-channel negative audio signal input line and the ground. Capacitor C34 and resistor R50 are connected in series on the left-channel positive audio signal input line, and resistor R59 is connected to the INPL interface of the audio power amplifier module. Capacitor C35 and resistor R53 are connected in series on the left-channel negative audio signal input line, and resistor R53 is connected to the INNL interface of the audio power amplifier module. Resistor R51 is connected between the INPL interface of the power amplifier chip U4 and the ground.

[0009] An audio output terminal filtering module is connected between the described audio power amplifier module and the audio input interface. The audio output terminal filtering module includes resistor R65, resistor R66, capacitor C45, capacitor C46, and capacitor C47. Resistor R65 is connected in series on the left-channel audio signal output line, and resistor R66 is connected in series on the right-channel audio signal output line. Resistors R65 and R66 are 22Ω resistors. Capacitor C47 is connected across the right-channel audio signal output line and the left-channel audio signal output line. Capacitor C47 is selected as a 10pF capacitor or left floating. A capacitor C45 is connected between the right-channel audio signal output line and ground, and a capacitor C46 is connected between the left-channel audio signal output line and ground. Capacitors C45 and C46 are each selected as 10pF capacitors. The right-channel audio signal output line is connected to the audio output right-channel port in the audio input interface, and the left-channel audio signal output line is connected to the audio output left-channel port in the audio input interface.

[0010] An ESD static diode D13 is connected between the audio output right-channel port in the described audio input interface and ground, and an ESD static diode D14 is connected between the audio output left-channel port in the audio input interface and ground.

[0011] A resistor R70 is connected to the auxiliary detection interface in the described audio input interface. Resistor R70 is connected to the positive power supply through resistor R69. Resistor R69 is selected as a 100KΩ resistor, and resistor R70 is selected as a 10KΩ resistor.

[0012] A capacitor C37 is connected to the microphone input signal terminal in the described audio input interface. A resistor R63 and a capacitor C38 are connected in series between capacitor C37 and ground. Resistor R63 is selected as a 3.6KΩ resistor or a 0Ω resistor, and capacitor C38 is selected as a 475 capacitor or left floating.

[0013] The microphone input signal terminal in the described audio input interface is connected to the microphone power supply terminal through series-connected resistors R55 and R54. A capacitor C36 is connected between the common terminal of resistors R55 and R54 and ground. Resistor R54 is selected as a 1.5KΩ resistor, resistor R55 is selected as a 3.6KΩ resistor, and capacitor C36 is selected as a 106 capacitor.

[0014] An ESD static diode D18 is connected between the microphone input signal terminal in the described audio input interface and ground.

[0015] The described volume adjustment module selects potentiometer VR1. Two adjustable resistors are integrated in potentiometer VR1. Among them, one end of the first resistor is grounded, and the other end is connected to the HP_R terminal of the audio output interface. The center tap of the first resistor is connected to the AUX_R terminal in the audio input interface. One end of the second resistor is grounded, and the other end is connected to the HP_L terminal of the audio output interface. The center tap of the second resistor is connected to the AUX_L terminal in the audio input interface.

[0016] The beneficial effects of the present utility model are as follows: Through the specially designed input and output interface filter circuit structure, the present utility model can achieve effective filtering and reduce the influence of external interference on the sound quality effect.

[0017] The following will further describe the present utility model in conjunction with the drawings and specific embodiments. Description of the Drawings

[0018] Figure 1 It is the circuit block diagram of the present utility model.

[0019] Figure 2 It is the partial circuit schematic diagram of the audio power amplifier module in the present utility model.

[0020] Figure 3 It is the partial circuit schematic diagram of the audio input interface in the present utility model.

[0021] Figure 4 It is the partial circuit schematic diagram of the audio output interface in the present utility model. Specific Embodiments

[0022] This embodiment is the preferred embodiment of the present utility model. All other embodiments with the same or similar principles and basic structures as this embodiment are within the protection scope of the present utility model.

[0023] Please refer to the attached Figure 1 to Figure 4 The present utility model protects a head-mounted e-sports headphone audio input and output processing module, which mainly includes an audio power amplifier module, an audio input interface, an audio output interface, and a volume adjustment module. The audio power amplifier module is used to connect to the central control module, and the central control module outputs an audio signal to the audio power amplifier module. The central control module can be a Bluetooth module or an MCU in the headphone, etc., which is not part of the present utility model. The audio input interface is connected to the audio output end of the audio power amplifier module, and the audio output interface is connected to the audio input interface through the volume adjustment module.

[0024] In this embodiment, the audio power amplifier module uses a power amplifier chip U4 of model CS4420C. A right-channel input filtering module is connected to the right-channel input terminal of the power amplifier chip U4, and a left-channel input filtering module is connected to the left-channel input terminal of the power amplifier chip U4. The right-channel input terminal of the power amplifier chip U4 is the INPR interface and INNR interface of the power amplifier chip U4. The right-channel input filtering module includes capacitors C42, C43, C44, C27, C28, resistors R42, R43, and R44. The right-channel output terminal of the central control module is the AOUTRN interface and AOUTRP interface of the central control chip. The AOUTRP interface outputs the right-channel positive audio signal, which is defined as the right-channel positive audio signal input line. The AOUTRN interface outputs the right-channel negative audio signal, which is defined as the right-channel negative audio signal input line. A capacitor C42 is connected in parallel between the right-channel positive audio signal input line and the right-channel negative audio signal input line. Capacitor C42 is a 10pF capacitor. In specific implementation, capacitor C42 can also be set to be floating. A capacitor C43 is connected between the right-channel positive audio signal input line and the ground. Capacitor C43 is a 10pF capacitor. A capacitor C44 is connected between the right-channel negative audio signal input line and the ground. Capacitor C44 is a 10pF capacitor. Capacitor C28 and resistor R43 are connected in series on the right-channel positive audio signal input line. Capacitor C28 is a 105 capacitor, and resistor R43 is a 10KΩ resistor. Resistor R43 is connected to the INPR interface of the power amplifier chip U4. Capacitor C27 and resistor R42 are connected in series on the right-channel negative audio signal input line. Capacitor C27 is a 105 capacitor, and resistor R42 is a 10KΩ resistor. Resistor R42 is connected to the INNR interface of the power amplifier chip U4. Resistor R44 is connected between the INPR interface of the power amplifier chip U4 and the ground. Resistor R44 is a 10KΩ resistor;The left-channel input terminals of the power amplifier chip U4 are the INPL interface and the INNL interface of the power amplifier chip U4. The left-channel input filtering module includes capacitor C40, capacitor C41, capacitor C39, capacitor C34, capacitor C35, resistor R50, resistor R53, and resistor R51. The left-channel output terminals of the central control module are the AOUTLN interface and the AOUTLP interface of the central control chip. The AOUTLP interface outputs the positive left-channel audio signal, which is defined as the positive left-channel audio signal input line. The AOUTLN interface outputs the negative left-channel audio signal, which is defined as the negative left-channel audio signal input line. A capacitor C40 is connected across the positive left-channel audio signal input line and the negative left-channel audio signal input line. Capacitor C40 is a 10 pF capacitor. In specific implementation, capacitor C40 can also be set to be floating. A capacitor C39 is connected between the positive left-channel audio signal input line and the ground. Capacitor C39 is a 10 pF capacitor. A capacitor C41 is connected between the negative left-channel audio signal input line and the ground. Capacitor C41 is a 10 pF capacitor. Capacitor C34 and resistor R50 are connected in series on the positive left-channel audio signal input line. Capacitor C34 is a 105 capacitor, and resistor R50 is a 10 KΩ resistor. Resistor R59 is connected to the INPL interface of the power amplifier chip U4. Capacitor C35 and resistor R53 are connected in series on the negative left-channel audio signal input line. Capacitor C35 is a 105 capacitor, and resistor R53 is a 10 KΩ resistor. Resistor R53 is connected to the INNL interface of the power amplifier chip U4. Resistor R51 is connected between the INPL interface of the power amplifier chip U4 and the ground. The input signal can be filtered through the right-channel input filtering module and the left-channel input filtering module to ensure the purity and stability of the input signal.

[0025] In this embodiment, the / SHDNL interface and the / SHDNR interface of the power amplifier chip U4 are respectively connected to the SHDN interface of the central control module. The central control module outputs a shutdown control signal to the / SHDNL interface and the / SHDNR interface of the power amplifier chip U4 through the SHDN interface, simultaneously controlling the shutdown of the left channel and the right channel of the power amplifier chip U4. A resistor R47 is connected between the / SHDNL interface of the power amplifier chip U4 and the positive power supply PVDD. A resistor R49 is connected between the / SHDNL interface of the power amplifier chip U4 and the ground. Resistor R47 is a 10 KΩ resistor, and resistor R49 is a 10 KΩ resistor or 0 Ω. The / SHDNR interface of the power amplifier chip U4 is connected to the / SHDNL interface.

[0026] In this embodiment, a capacitor C29 is connected across the PVDD interface and the ground of the power amplifier chip U4. Capacitor C29 is a 105 capacitor. A capacitor C33 is connected across the PVSS interface and the ground of the power amplifier chip U4. Capacitor C33 is a 105 capacitor. A capacitor C30 is connected across the CN interface and the CP interface of the power amplifier chip U4. Capacitor C30 is a 105 capacitor.

[0027] In this embodiment, the audio input interface (i.e., AUX_In) can adopt an audio interface with the model number PJS-035-16A (if SMD process is adopted), or an audio interface with the model number PJS-035-92A (if DIP process is adopted). The OUTR interface of the power amplifier chip U4 serves as the right channel output port, which is defined as the right channel audio signal output line. The OUTL interface of the power amplifier chip U4 serves as the left channel output port, which is defined as the left channel audio signal output line. A resistor R48 is connected in parallel between the OUTR interface and the INNR interface of the power amplifier chip U4. The resistor R48 adopts a 10KΩ resistor. A resistor R52 is connected in parallel between the OUTL interface and the INNL interface of the power amplifier chip U4. The resistor R52 adopts a 10KΩ resistor. An audio output terminal filtering module is connected between the power amplifier chip U4 and the audio input interface. The audio output terminal filtering module includes a resistor R65, a resistor R66, a capacitor C45, a capacitor C46, and a capacitor C47. The resistor R65 is connected in series on the left channel audio signal output line. The resistor R66 is connected in series on the right channel audio signal output line. The resistors R65 and R66 adopt 22Ω resistors. The capacitor C47 is connected in parallel between the right channel audio signal output line and the left channel audio signal output line. The capacitor C47 is selected as a 10pF capacitor. Specifically, in implementation, the capacitor C47 can also be set to be floating. A capacitor C45 is connected between the right channel audio signal output line and the ground. A capacitor C46 is connected between the left channel audio signal output line and the ground. The capacitors C45 and C46 are respectively selected as 10pF capacitors. The right channel audio signal output line is connected to the HPOR port (audio output right channel port) in the audio input interface. The left channel audio signal output line is connected to the HPOL port (audio output left channel port) in the audio input interface.

[0028] In this embodiment, an ESD static diode D13 is connected between the HPOR port in the audio input interface and the ground. An ESD static diode D14 is connected between the HPOL port in the audio input interface and the ground. The ESD static diodes D13 and D14 are selected as ESD static diodes with the model number RS5TL9CA. Specifically, in implementation, other models of ESD static diodes can also be selected for replacement.

[0029] In this embodiment, the auxiliary detection interface in the audio input interface is connected to the AUX_DET interface of the central control module through a resistor R70. The AUX_DET interface of the central control module is connected to the positive power supply (VCC) through a resistor R69. The resistor R69 is selected as a 100KΩ resistor. The resistor R70 is selected as a 10KΩ resistor.

[0030] In this embodiment, a capacitor C37 is connected to the microphone input signal terminal (MIC+) in the audio input interface and is connected to the MICIN_0P interface of the central control module through the capacitor C37. A resistor R63 and a capacitor C38 are connected in series between the MICIN_0P interface of the central control module and the ground. The resistor R63 is a 3.6KΩ resistor or a 0Ω resistor, and the capacitor C38 is a 475 capacitor or left floating. The microphone input signal can be filtered through the resistor R63 and the capacitor C38 to make it purer.

[0031] In this embodiment, the microphone input signal terminal in the audio input interface is connected to the microphone power supply terminal (VMIC) through the series-connected resistors R55 and R54. A capacitor C36 is connected between the common terminal of the resistors R55 and R54 and the ground. The resistor R54 is a 1.5KΩ resistor, the resistor R55 is a 3.6KΩ resistor, and the capacitor C36 is a 106 capacitor.

[0032] In this embodiment, an ESD static diode D18 is connected between the microphone input signal terminal in the audio input interface and the ground. The ESD static diode D18 is an ESD static diode of the model RS5TL9CA. In specific implementation, other models of ESD static diodes can also be selected for replacement.

[0033] In this embodiment, the audio output interface selects the audio interface J3 of the model CPJ-D3048A, and the volume adjustment module selects the potentiometer VR1 of the model RK09L12D0-F25-C0-V103, which integrates two adjustable resistors. One end of the first resistor is grounded, and the other end is connected to the HP_R terminal of the audio output interface. The middle tap of the first resistor is connected to the AUX_R terminal in the audio input interface. One end of the second resistor is grounded, and the other end is connected to the HP_L terminal of the audio output interface. The middle tap of the second resistor is connected to the AUX_L terminal in the audio input interface.

[0034] Through the specially designed input and output interface filter circuit structure, the utility model can achieve effective filtering and reduce the influence of external interference on the sound quality effect.

Claims

1. An audio input / output processing module for a head-mounted e-sports headset, characterized in that: The described processing module includes an audio power amplifier module, an audio input interface, an audio output interface, and a volume adjustment module. The audio input interface is connected to the audio output terminal of the audio power amplifier module, and the audio output interface is connected to the audio input interface through the volume adjustment module; A right-channel input filtering module is connected to the right-channel input terminal of the audio power amplifier module, and a left-channel input filtering module is connected to the left-channel input terminal of the audio power amplifier module. The right-channel input terminal of the audio power amplifier module is the INPR interface and INNR interface of the audio power amplifier module. The right-channel input filtering module includes capacitor C42, capacitor C43, capacitor C44, capacitor C27, capacitor C28, resistor R42, resistor R43, and resistor R44. A capacitor C42 is connected in parallel between the right-channel positive audio signal input line and the right-channel negative audio signal input line. A capacitor C43 is connected between the right-channel positive audio signal input line and the ground. A capacitor C44 is connected between the right-channel negative audio signal input line and the ground. Capacitor C28 and resistor R43 are connected in series on the right-channel positive audio signal input line, and resistor R43 is connected to the INPR interface of the audio power amplifier module. Capacitor C27 and resistor R42 are connected in series on the right-channel negative audio signal input line, and resistor R42 is connected to the INNR interface of the audio power amplifier module. Resistor R44 is connected between the INPR interface of the audio power amplifier module and the ground. The left-channel input terminal of the audio power amplifier module is the INPL interface and INNL interface of the audio power amplifier module. The left-channel input filtering module includes capacitor C40, capacitor C41, capacitor C39, capacitor C34, capacitor C35, resistor R50, resistor R53, and resistor R51. A capacitor C40 is connected in parallel between the left-channel positive audio signal input line and the left-channel negative audio signal input line. A capacitor C39 is connected between the left-channel positive audio signal input line and the ground. A capacitor C41 is connected between the left-channel negative audio signal input line and the ground. Capacitor C34 and resistor R50 are connected in series on the left-channel positive audio signal input line, resistor R59 is connected to the INPL interface of the audio power amplifier module, capacitor C35 and resistor R53 are connected in series on the left-channel negative audio signal input line, resistor R53 is connected to the INNL interface of the audio power amplifier module, and resistor R51 is connected between the INPL interface of the power amplifier chip U4 and the ground; An audio output terminal filtering module is connected between the described audio power amplifier module and the audio input interface. The audio output terminal filtering module includes resistor R65, resistor R66, capacitor C45, capacitor C46, and capacitor C47. Resistor R65 is connected in series on the left-channel audio signal output line, and resistor R66 is connected in series on the right-channel audio signal output line. Resistors R65 and R66 are 22Ω resistors. Capacitor C47 is connected across the right-channel audio signal output line and the left-channel audio signal output line. Capacitor C47 is selected as a 10pF capacitor or left floating. A capacitor C45 is connected between the right-channel audio signal output line and ground, and a capacitor C46 is connected between the left-channel audio signal output line and ground. Capacitors C45 and C46 are respectively selected as 10pF capacitors. The right-channel audio signal output line is connected to the audio output right-channel port in the audio input interface, and the left-channel audio signal output line is connected to the audio output left-channel port in the audio input interface.

2. The audio input / output processing module of the head-mounted e-sports headset according to claim 1, characterized in that: An ESD static diode D13 is connected between the audio output right-channel port in the described audio input interface and ground, and an ESD static diode D14 is connected between the audio output left-channel port in the audio input interface and ground.

3. The audio input / output processing module of the head-mounted e-sports headset according to claim 1, characterized in that: A resistor R70 is connected to the auxiliary detection interface in the described audio input interface. Resistor R70 is connected to the positive power supply through resistor R69. Resistor R69 is selected as a 100KΩ resistor, and resistor R70 is selected as a 10KΩ resistor.

4. The audio input / output processing module of the head-mounted e-sports headset according to claim 1, characterized in that: A capacitor C37 is connected to the microphone input signal terminal in the described audio input interface. A resistor R63 and a capacitor C38 are connected in series between capacitor C37 and ground. Resistor R63 is selected as a 3.6KΩ resistor or a 0Ω resistor, and capacitor C38 is selected as a 475 capacitor or left floating.

5. The audio input / output processing module of the head-mounted e-sports headset according to claim 1, characterized in that: The microphone input signal terminal in the described audio input interface is connected to the microphone power supply terminal through series-connected resistors R55 and R54. A capacitor C36 is connected between the common terminal of resistors R55 and R54 and ground. Resistor R54 is selected as a 1.5KΩ resistor, resistor R55 is selected as a 3.6KΩ resistor, and capacitor C36 is selected as a 106 capacitor.

6. The audio input / output processing module of the head-mounted e-sports headset according to claim 1, characterized in that: An ESD static diode D18 is connected between the microphone input signal terminal in the described audio input interface and ground.

7. The audio input / output processing module of the head-mounted e-sports headset according to claim 1, wherein: The described volume adjustment module selects potentiometer VR1. Two adjustable resistors are integrated in potentiometer VR1. Among them, one end of the first resistor is grounded, and the other end is connected to the HP_R terminal of the audio output interface. The middle tap of the first resistor is connected to the AUX_R terminal in the audio input interface. One end of the second resistor is grounded, and the other end is connected to the HP_L terminal of the audio output interface. The middle tap of the second resistor is connected to the AUX_L terminal in the audio input interface.

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