Wired power amplifier earphone capable of improving tone quality through ear amplifier technology

Abstract

The utility model discloses a wired power amplifier earphone capable of improving tone quality through an ear amplifier technology, comprising a left channel input interface and a right channel input interface which respectively receive left channel and right channel audio signals from an external sound source and transmit the signals to a corresponding audio frequency division processor; the left sound channel input interface receives a left sound channel from an external sound source and transmits the left sound channel to the left audio power amplifier module through the audio frequency division processor, and the left sound channel input interface is used for amplifying a left sound channel audio signal. The right sound channel input interface receives a right sound channel from an external sound source and transmits the right sound channel to the right audio power amplifier module through the audio frequency division processor so as to amplify a right sound channel audio signal. According to the utility model, by using the special audio power amplifier module, an audio signal can be effectively amplified, and especially, the performance at a low frequency band is obviously improved; the amplification enables the audio signal to be richer and fuller, provides a better bass effect, and enables a user to have better experience when listening to music or watching videos.

Description

Technical Field

[0001] The utility model relates to a power amplifier headphone, specifically to a wired power amplifier headphone that improves the sound quality through headphone amplifier technology. Background Art

[0002] In modern audio devices, with the continuous improvement of the demand for sound quality, traditional headphones are gradually unable to meet users' expectations in terms of sound quality performance.

[0003] Many headphones rely on the built-in audio amplifiers of mobile phones or other portable devices for power supply. However, the power of these built-in amplifiers is usually limited and cannot provide sufficient driving force to support high-impedance headphones, resulting in poor sound quality performance, especially in the low-frequency band where distortion is prone to occur.

[0004] Traditional headphones often lack perfect audio signal processing capabilities, resulting in the inability to effectively separate and amplify different frequency bands in the audio signal. Especially in complex audio signals, the superposition of low-frequency and high-frequency makes it difficult for users to experience the delicacy of the audio. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a wired power amplifier headphone that improves the sound quality through headphone amplifier technology to solve the problems in the background art.

[0006] The wired power amplifier headphone that improves the sound quality through headphone amplifier technology of the utility model is realized through the following technical solutions, including:

[0007] A left-channel input interface and a right-channel input interface, which respectively receive the left-channel and right-channel audio signals from an external sound source and transmit them to the corresponding audio frequency divider processor; the left-channel input interface receives the left channel from the external sound source and transmits it to the left audio power amplifier module through the audio frequency divider processor for amplifying the left-channel audio signal; the right-channel input interface receives the right channel from the external sound source and transmits it to the right audio power amplifier module through the audio frequency divider processor for amplifying the right-channel audio signal;

[0008] A central control MCU, which is connected to the audio frequency divider processor and is used to control the processing and amplification process of the audio signal;

[0009] A noise suppression module, which is connected to the central control MCU, and the noise suppression module is connected to the left audio power amplifier module and the right audio power amplifier module, and is used to suppress the noise in the audio signal;

[0010] An independent battery, which is connected to the left audio power amplifier module and the right audio power amplifier module to provide an independent power supply for the audio power amplifier;

[0011] As a preferred technical solution, it further includes a charging unit, and the charging unit is connected to an independent battery to charge the independent battery through the charging unit.

[0012] As a preferred technical solution, the charging unit includes a charging interface, a charging management module, a battery protection board, and a switch;

[0013] The charging interface is connected to the charging management module and is used to manage the charging process of the battery; the battery protection board is connected to the charging management module and the independent battery and is used to protect the independent battery; the switch is used to control the connection between the independent battery and the left audio power amplifier module and the right audio power amplifier module.

[0014] As a preferred technical solution, the output ends of the left audio power amplifier module and the right audio power amplifier module are respectively connected with a left earphone unit and a right earphone unit, which are used to play the amplified left-channel and right-channel audio signals.

[0015] As a preferred technical solution, the switch is a single-pole double-throw switch (SPDT) and is used to selectively connect or disconnect the power connection between the independent battery and the left audio power amplifier module and the right audio power amplifier module.

[0016] The beneficial effects of the present utility model are:

[0017] By using a dedicated audio power amplifier module (such as CS4410), the present utility model can effectively amplify the audio signal, especially with a significant improvement in the performance in the low-frequency band; this amplification can make the audio signal richer and fuller, providing a better bass effect and enabling users to have a better experience when listening to music or watching videos.

[0018] The present utility model uses an independent battery to supply power to the audio power amplifier, solving the problem that the traditional headphone power amplifier directly depends on the mobile phone power supply, ensuring that the power amplifier can obtain sufficient power required, avoiding the degradation of sound quality or the limitation of the power amplifier performance due to insufficient mobile phone power, and thus ensuring continuous and stable sound quality output.

[0019] The present utility model enables the earphone to be conveniently charged when it is in a non-use state through the built-in charging unit. The user can easily connect an external power supply through the USB interface. The TP4057 charging management chip can effectively control the charging process, protect the battery, and extend its service life; at the same time, the LED indicator can display the charging status in real time, improving the user experience.

[0020] The noise suppression module of the present utility model can effectively reduce the noise in the audio signal, ensuring the purity of the sound quality; this is particularly important for high-fidelity audio playback, which can maximize the clarity and fineness of the audio signal and enable users to feel more realistic sound effects. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 is the system block diagram of the present invention;

[0023] Figure 2 is the circuit diagram of the present invention. Detailed implementation manners

[0024] All the features disclosed in this specification, or all the steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.

[0025] As Figure 1 shown, a wired power amplifier headphone that improves sound quality through headphone amplifier technology according to the present invention includes:

[0026] A left-channel input interface and a right-channel input interface, which respectively receive the left-channel and right-channel audio signals from an external sound source and transmit them to the corresponding audio frequency divider processor; the left-channel input interface receives the left-channel from the external sound source and transmits it to the left audio power amplifier module through the audio frequency divider processor for amplifying the left-channel audio signal; the right-channel input interface receives the right-channel from the external sound source and transmits it to the right audio power amplifier module through the audio frequency divider processor for amplifying the right-channel audio signal;

[0027] A central control MCU, which is connected to the audio frequency divider processor and is used to control the processing and amplification process of the audio signal;

[0028] A noise suppression module, which is connected to the central control MCU, and the noise suppression module is connected to the left audio power amplifier module and the right audio power amplifier module, and is used to suppress the noise in the audio signal;

[0029] An independent battery, which is connected to the left audio power amplifier module and the right audio power amplifier module to provide an independent power supply for the audio power amplifier;

[0030] Among them, a charging unit is further included, and the charging unit is connected to the independent battery to charge the independent battery through the charging unit.

[0031] Among them, the charging unit includes a charging interface, a charging management module, a battery protection board, and a switch;

[0032] The charging interface is connected to the charging management module and is used to manage the charging process of the battery; the battery protection board is connected to the charging management module and the independent battery and is used to protect the independent battery; the switch is used to control the connection between the independent battery and the left audio power amplifier module and the right audio power amplifier module.

[0033] In addition, the output ends of the left audio power amplifier module and the right audio power amplifier module are respectively connected to a left earphone unit and a right earphone unit, which are used to play the amplified left and right channel audio signals.

[0034] In addition, the switch is a single-pole double-throw switch (SPDT) and is used to selectively connect or disconnect the power connection between the independent battery and the left audio power amplifier module and the right audio power amplifier module.

[0035] As Figure 2 shown:

[0036] Charging circuit part

[0037] USB interface (USB1): Provides external power input, introduced through the USB interface.

[0038] Diodes (D1, D2, D4): Used for protection and current rectification; D1 and D2 are used to indicate the charging status, and D4 is used to prevent current backflow.

[0039] Resistors (R1, R2, R3): These resistors, together with the LED diodes, indicate the charging status. R1 and R2 are used to limit the current through the LED, and R3 is used to limit the input current of the TP4057.

[0040] TP4057 (U1): A dedicated lithium battery charging management chip that controls the charging process.

[0041] Capacitors (C1, C2): Used for power filtering, smoothing the input voltage and stabilizing the current.

[0042] Battery (BT1) A 3.7V lithium battery that provides power for the power amplifier part.

[0043] Switch (S1): Used to control the connection between the battery and the power amplifier part.

[0044] Amplifier circuit part

[0045] Input ends (LI, RI): Left and right channel inputs, coupled to the power amplifier chip through capacitors (C6, C9).

[0046] Power amplifier chip (CS4410, U2): Used for amplifying audio signals, providing greater power to drive the earphones to enhance the bass effect.

[0047] Resistors (R4, R5, R6, R7, R8, R9, R10, R11): Used for signal processing and filtering, adjusting signal gain and feedback.

[0048] Capacitors (C3, C4, C5, C7, C8, C10, C11): Used for signal filtering and smoothing the power supply voltage.

[0049] Output terminals (LO, RO, GND): Left and right channel outputs, connected to the headphones.

[0050] Battery power supply for the power amplifier circuit

[0051] The battery (BT1) is connected to the power amplifier circuit through the switch (S1), supplying power to the power amplifier alone and not to the headphones themselves; this means that the power supply of the power amplifier is independent of the mobile phone, ensuring that the power amplifier can provide sufficient power without being limited by the insufficient power of the mobile phone power supply.

[0052] The working principle is as follows:

[0053] When powered by the USB interface, TP4057 is responsible for controlling the battery charging and displaying the charging status through the LED.

[0054] Amplification process: The audio signal enters from the mobile phone through the LI and RI input terminals. After being filtered and adjusted by a series of resistors and capacitors, it enters the power amplifier chip CS4410.

[0055] Power amplification: CS4410 amplifies the audio signal and outputs it through the LO and RO output terminals to drive the headphones and enhance the bass effect.

[0056] Independent battery power supply: Controlled by the S1 switch, the battery provides a stable power supply for the power amplifier chip, ensuring that the amplification effect is not limited by the power of the mobile phone.

[0057] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be thought of without creative work should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope defined by the claims.

Claims

1. A wired power amplifier headphone that improves sound quality through headphone amplifier technology, characterized in that, Including: A left-channel input interface and a right-channel input interface, which respectively receive the left-channel and right-channel audio signals from an external sound source and transmit them to the corresponding audio frequency divider processor; The left-channel input interface receives the left channel from an external sound source and transmits it to the left audio power amplifier module through the audio frequency divider processor for amplifying the left-channel audio signal; the right-channel input interface receives the right channel from an external sound source and transmits it to the right audio power amplifier module through the audio frequency divider processor for amplifying the right-channel audio signal; A central control MCU, which is connected to the audio frequency divider processor and is used to control the processing and amplification process of the audio signal; A noise suppression module, which is connected to the central control MCU, and the noise suppression module is connected to the left audio power amplifier module and the right audio power amplifier module for suppressing the noise in the audio signal; An independent battery, which is connected to the left audio power amplifier module and the right audio power amplifier module to provide an independent power supply for the audio power amplifier.

2. The wired power amplifier earphone that improves sound quality through earphone amplifier technology according to claim 1, wherein: It further includes a charging unit, which is connected to the independent battery and charges the independent battery through the charging unit.

3. The wired power amplifier earphone for improving sound quality by headphone amplifier technology according to claim 2, wherein: The charging unit includes a charging interface, a charging management module, a battery protection board and a switch; The charging interface is connected to the charging management module for managing the charging process of the battery; the battery protection board is connected to the charging management module and the independent battery for protecting the independent battery; the switch is used to control the connection between the independent battery and the left audio power amplifier module and the right audio power amplifier module.

4. The wired power amplifier headphone for improving sound quality through headphone amplifier technology according to claim 1, characterized in that: The output ends of the left audio power amplifier module and the right audio power amplifier module are respectively connected with a left earphone unit and a right earphone unit for playing the amplified left-channel and right-channel audio signals.

5. The wired power amplifier headphone that improves sound quality through headphone amplifier technology according to claim 3, wherein: The switch is a single-pole double-throw switch for selectively connecting or disconnecting the power connection between the independent battery and the left audio power amplifier module and the right audio power amplifier module.

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