CN220528208U

CN220528208U - Earphone frequency response adjusting circuit

Info

Publication number: CN220528208U
Application number: CN202322043129.8U
Authority: CN
Inventors: 杨和天
Original assignee: Guangzhou Tuopin Technology Co ltd
Current assignee: Guangzhou Tuopin Technology Co ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2024-02-23
Anticipated expiration: 2033-07-31

Abstract

The utility model provides an earphone frequency response adjusting circuit which comprises a circuit input end, a circuit output end and a switching circuit, wherein the switching circuit is arranged at the circuit input end and the circuit output end, the circuit input end is used for being externally connected with an earphone plug, the circuit output end is used for being externally connected with an earphone, and the switching circuit is provided with a switch group which is opened or closed to switch different high-pass filters or low-pass filters. According to the utility model, through setting the combination of the switch groups, the effect is equal to the superposition of the respective filtering effects, so that more diversified effects are obtained, and the listening requirements of users with different favorites are met.

Description

Earphone frequency response adjusting circuit

Technical Field

The utility model relates to the technical field of electroacoustic, in particular to an earphone frequency response adjusting circuit.

Background

The frequency response curve of the earphone is almost fixed after design and manufacture. If the user needs to adjust the high, medium and low tones according to the preference or level the frequency response curve based on the requirement, the user can only use the earphone amplifier or the sound source with the corresponding function, which brings inconvenience to the user.

Disclosure of Invention

In view of the above, the present utility model provides an earphone frequency response adjusting circuit.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides an earphone frequency response adjusting circuit, includes circuit input, circuit output and switching circuit, switching circuit set up in circuit input with circuit output, circuit input is used for external connection in the earphone plug, circuit output is used for external connection in the earphone, switching circuit is equipped with the switch group, through switch group disconnection or closure are in order to switch different high pass filter or low pass filter.

In the present utility model, preferably, the switching circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, and a third capacitor, the switch group includes a first switch, a second switch, a third switch, and a fourth switch, the circuit input terminal is grounded by connecting the first capacitor, the first resistor, the first switch, the second switch, and the second resistor in series, the third resistor is connected between the circuit input terminal and the circuit output terminal, one end of the second capacitor is connected between the first switch and the second switch, the other end of the second capacitor is grounded by the third capacitor, the fourth resistor, and the third switch, and the other end of the second capacitor is grounded by the third capacitor, the fifth resistor, and the fourth switch.

The utility model has the advantages and positive effects that: through designing a headset frequency response adjustment circuit, the user can obtain different frequency response curves through the switch, satisfies individualized listening demand. The specific frequency response curve can also be obtained by a switch in combination with the design of the earphone itself. The circuit is integrated inside the earphone, so that the use can be further facilitated.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

fig. 1 is a schematic circuit diagram of an earphone frequency response adjusting circuit according to the present utility model.

In the figure: r1, a first resistor; r2, a second resistor; r3, a third resistor; r4, a fourth resistor; r5, a fifth resistor; c1, a first capacitor; c2, a second capacitor; c3, a third capacitor; SW1, a first switch; SW2, a second switch; SW3, a third switch; SW4, fourth switch; IN, circuit input; OUT, circuit output.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown IN fig. 1, the present utility model provides an earphone frequency response adjusting circuit, which includes a circuit input terminal IN, a circuit output terminal OUT, and a switching circuit, wherein the switching circuit is disposed at the circuit input terminal IN and the circuit output terminal OUT, the circuit input terminal IN is used for being externally connected to an earphone plug, the circuit output terminal OUT is used for being externally connected to an earphone, and the switching circuit is provided with a switch group, and is opened or closed by the switch group to switch different high-pass filters or low-pass filters.

IN this embodiment, further, the switching circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1, a second capacitor C2, and a third capacitor C3, the switch group includes a first switch SW1, a second switch SW2, a third switch SW3, and a fourth switch SW4, the circuit input terminal IN is grounded through the series connection of the first capacitor C1, the first resistor R1, the first switch SW1, the second switch SW2, and the second resistor R2, the third resistor R3 is connected between the circuit input terminal IN and the circuit output terminal OUT, one end of the second capacitor C2 is connected between the first switch SW1 and the second switch SW2, the other end of the second capacitor C2 is grounded through the third capacitor C3, the fourth resistor R4, and the third switch SW3, and the other end of the second capacitor C2 is grounded through the third capacitor C3, the fifth resistor R5, and the fourth switch SW 4.

When the first switch SW1, the second switch SW2, the third switch SW3 and the fourth switch SW4 are all turned off, signals are input through the circuit input terminal IN and output through the third resistor R3 to the circuit output terminal OUT, so that frequency response is not affected.

When the first switch SW1 is closed and the second switch SW2, the third switch SW3 and the fourth switch SW4 are all opened, the first capacitor C1, the first resistor R1, the second capacitor C2 and the third resistor R3 are connected in parallel, and a high-frequency signal in the circuit passes through to play a role in raising the high frequency of the circuit, and the cut-off frequency is specifically designed according to the value.

When the second switch SW2 is turned on, the first switch SW1, the third switch SW3 and the fourth switch SW4 are all turned off, the signal is output through the third resistor R3, and the high-frequency signal is grounded through the bypass second capacitor C2 and the second resistor R2, so that the cut-off frequency is higher by design, thereby playing a role of weakening the high frequency.

When only the third switch SW3 or the fourth switch SW4 is closed, the working principle is similar to that of only the second switch SW2, and the cut-off frequency of only the third switch SW3 or the fourth switch SW4 is respectively at low frequency and ultra-low frequency through the calculation of the values of the resistor and the capacitor, so that the effects of improving bass and ultra-low sound can be achieved.

The first switch SW1, the second switch SW2, the third switch SW3 and the fourth switch SW4 can be combined, the effect is equal to the superposition of respective filtering effects, the more diversified effects are obtained, and the listening requirements of different favorite users are met.

According to the utility model, by designing the earphone frequency response adjusting circuit, a user can obtain different frequency response curves through the switch, so that the personalized listening requirement is met. The specific frequency response curve can also be obtained by a switch in combination with the design of the earphone itself. The circuit is integrated inside the earphone, so that the use can be further facilitated.

The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by this patent.

Claims

1. The utility model provides a earphone frequency response adjusting circuit, its characterized in that includes circuit input, circuit output and switching circuit, switching circuit set up in circuit input with circuit output, circuit input is used for external connection in the earphone plug, circuit output is used for external connection in the earphone, switching circuit is equipped with switch group, opens or closes in order to switch different high pass filters or low pass filters through switch group.

2. The earphone frequency response adjusting circuit according to claim 1, wherein the switching circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor and a third capacitor, the switch group comprises a first switch, a second switch, a third switch and a fourth switch, the circuit input terminal is grounded by connecting the first capacitor, the first resistor, the first switch, the second switch and the second resistor in series, the third resistor is connected between the circuit input terminal and the circuit output terminal, one end of the second capacitor is connected between the first switch and the second switch, the other end of the second capacitor is grounded by the third capacitor, the fourth resistor and the third switch, and the other end of the second capacitor is grounded by the third capacitor, the fifth resistor and the fourth switch.