CN219612009U - Speaker frequency adjusting circuit - Google Patents
Speaker frequency adjusting circuit Download PDFInfo
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- CN219612009U CN219612009U CN202320395114.5U CN202320395114U CN219612009U CN 219612009 U CN219612009 U CN 219612009U CN 202320395114 U CN202320395114 U CN 202320395114U CN 219612009 U CN219612009 U CN 219612009U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
The utility model belongs to the technical field of speakers, and particularly relates to a speaker frequency adjusting circuit, which comprises: the device comprises a first voltage dividing module, a switch module, a second voltage dividing module and a frequency dividing module, wherein the switch module is connected with the first voltage dividing module, the second voltage dividing module is connected with the switch module, and the frequency dividing module is connected with the first voltage dividing module and the second voltage dividing module. Through setting up switch module, come fine adjustment second partial pressure module and insert the resistance in the circuit, and then adjust the sound pressure level of speaker, compare in prior art, can realize accurate definite frequency, the sound pressure level is adjusted more accurately. Through setting up the first frequency division electric capacity and the second frequency division electric capacity of different appearance values, can realize the sound pressure level adjustment of different frequency channels, carry out individualized customization to low frequency, high frequency and hyperfrequency, satisfy different user's user demand.
Description
Technical Field
The utility model belongs to the technical field of speakers, and particularly relates to a speaker frequency adjusting circuit.
Background
SPL (Sound pressure level ) is a number of levels that one divides to facilitate distinguishing between sound intensity and sound intensity, and is used to represent the sound intensity. The loudspeaker is also called a loudspeaker, and is a transducer for converting an electric signal into an acoustic signal, wherein the earphone is provided with the loudspeaker for playing sound and adjusting the sound pressure level of the output sound in various modes.
CN216455031U discloses a volume adjusting damping device which adjusts the sound pressure level of a speaker by adjusting damping. CN108810709B discloses a device for adjusting the sound release hole of an earphone and an earphone, which adjusts the sound pressure level of a loudspeaker by adjusting the sizes of the sound release hole and a tuning net of a loudspeaker. Although the two modes can achieve the purpose of adjusting the sound pressure level of the loudspeaker, the two modes can not achieve accurate adjustment, only coarse adjustment can be carried out, and the requirements of part of customers with high requirements on sound quality can not be met.
Therefore, there is a need to devise a new solution to the above-mentioned problems.
Disclosure of Invention
The utility model aims to provide a loudspeaker frequency adjusting circuit, which aims to solve the technical problem that a loudspeaker in the prior art cannot accurately adjust sound pressure level.
To achieve the above object, an embodiment of the present utility model provides a speaker frequency adjustment circuit, including: the device comprises a first voltage dividing module, a switch module, a second voltage dividing module and a frequency dividing module, wherein the switch module is connected with the first voltage dividing module, the second voltage dividing module is connected with the switch module, and the frequency dividing module is connected with the first voltage dividing module and the second voltage dividing module.
Optionally, the switch module is a dial switch, and the dial switch is connected with the first voltage dividing module and the second voltage dividing module.
Optionally, the dial switch includes a frequency modulation dial key and a sensitivity dial key, the frequency modulation dial key is connected with the second voltage division module, and the sensitivity dial key is connected with the first voltage division module.
Optionally, the number of the frequency modulation dial keys is three, and the number of the sensitivity dial keys is one.
Optionally, the first voltage dividing module includes a first resistor and a second resistor, one end of the first resistor is connected with one end of the sensitivity dial key, one end of the second resistor is connected with the other end of the first resistor, and one end of the three frequency modulation dial keys and one end of the sensitivity dial key are both connected with one end of the second resistor.
Optionally, the second voltage dividing module includes a third resistor, a fourth resistor and a fifth resistor, one end of the third resistor and one end of the fifth resistor are respectively connected with the other end of the corresponding frequency modulation dial key; the other end of the third resistor, the other end of the fourth resistor and the other end of the fifth resistor are all connected with the frequency dividing module.
Optionally, the switch module comprises a frequency modulation switch and a sensitivity switch, and the frequency modulation switch is connected with the second voltage division module; the sensitivity switch is connected with the first voltage dividing module.
Optionally, the number of the frequency modulation switches is three, and the number of the sensitivity switches is one.
Optionally, the first voltage dividing module includes a first resistor and a second resistor, one end of the first resistor is connected to one end of the sensitivity switch, one end of the second resistor is connected to the other end of the first resistor, and one end of the three frequency modulation switches and one end of the sensitivity switch are connected to one end of the second resistor; the second voltage dividing module comprises a third resistor, a fourth resistor and a fifth resistor, wherein one end of the third resistor, one end of the third resistor and one end of the fifth resistor are respectively connected with the other end of the corresponding frequency modulation switch; the other end of the third resistor, the other end of the fourth resistor and the other end of the fifth resistor are all connected with the frequency dividing module.
Optionally, the frequency dividing module includes a sixth resistor, a first frequency dividing capacitor and a second frequency dividing capacitor; one end of the sixth resistor is connected with the second resistor in the first voltage division module, the other end of the sixth resistor is connected with the fifth resistor in the second voltage division module, the first frequency division capacitor is connected in parallel with two ends of the sixth resistor, and the second frequency division capacitor is connected in parallel with two ends of the first frequency division capacitor.
The above-mentioned one or more technical solutions in the speaker frequency adjusting circuit provided by the embodiments of the present utility model have at least one of the following technical effects:
1. through setting up switch module, come fine adjustment second partial pressure module and insert the resistance in the circuit, and then adjust the sound pressure level of speaker, compare in prior art, can realize accurate definite frequency, the sound pressure level is adjusted more accurately.
2. Through setting up the first frequency division electric capacity and the second frequency division electric capacity of different appearance values, can realize the sound pressure level adjustment of different frequency channels, carry out individualized customization to low frequency, high frequency and hyperfrequency, satisfy different user's user demand.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic circuit diagram of a speaker frequency adjustment circuit according to a first embodiment of the present utility model;
fig. 2 is a schematic circuit diagram of a speaker frequency adjustment circuit according to a second embodiment of the present utility model.
Wherein, each reference sign in the figure:
100-a first voltage dividing module; 200-a switch module; 210-frequency modulation dial key; 220-sensitivity dial key; 230-frequency modulation switch; 240-sensitivity switch; 300-a second voltage dividing module; 400-frequency dividing module.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the utility model and should not be construed as limiting the utility model.
In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.
In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.
In a first embodiment of the present utility model, as shown in fig. 1, a speaker frequency adjustment circuit is provided, which is disposed on a signal input terminal of an earphone and integrated on a PCB board of a moving coil. The circuit comprises: the switching device comprises a first voltage division module 100, a switching module 200, a second voltage division module 300 and a frequency division module 400, wherein the switching module 200 is connected with the first voltage division module 100, the second voltage division module 300 is connected with the switching module 200, and the frequency division module 400 is connected with the first voltage division module 100 and the second voltage division module 300.
The switch module 200 is a dial switch K10, and the dial switch K10 is connected to the first voltage dividing module 100 and the second voltage dividing module 300. The dial switch K10 includes a frequency modulation dial key 210 and a sensitivity dial key 220, the frequency modulation dial key 210 is connected with the second voltage division module 300, and the sensitivity dial key 220 is connected with the first voltage division module 100.
In this embodiment, the number of fm keys 210 is three, and the number of sensitivity keys 220 is one. The fm dial key 210 specifically includes a first dial key K11, a second dial key K12, and a third dial key K13, and the sensitivity dial key 220 specifically includes a fourth dial key K14. Closing the first dial key K11 to raise the sound pressure level by 1dB, closing the first dial key K11 and the second dial key K12 to raise the sound pressure level by 2dB, closing the first dial key K11, the second dial key K12 and the third dial key K13 to raise the sound pressure level by 3dB, and closing the fourth dial key K14 to raise the overall sound pressure level by 3dB, thereby improving the sensitivity of the whole switch module 200. Through the arrangement, the loudspeaker can accurately adjust the sound pressure level of the 20-300Hz frequency band, and the accuracy is higher.
Specifically, the first voltage dividing module 100 includes a first resistor R15 and a second resistor R18, one end of the first resistor R15 is connected to one end of the sensitivity dial key 220, one end of the second resistor R18 is connected to the other end of the first resistor R15, and one end of the three fm dial keys 210 and one end of the sensitivity dial key 220 are both connected to one end of the second resistor R18.
Specifically, the second voltage dividing module 300 includes a third resistor R20, a fourth resistor R19, and a fifth resistor R21, where one end of the third resistor R20, and one end of the fifth resistor R21 are respectively connected to the other end of the corresponding fm dial key 210; the other end of the third resistor R20, the other end of the fourth resistor R19 and the other end of the fifth resistor R21 are all connected to the frequency dividing module 400.
Specifically, the frequency division module 400 includes a sixth resistor R13, a first frequency division capacitor C1, and a second frequency division capacitor C2; one end of the sixth resistor R13 is connected to the second resistor R18 in the first voltage dividing module 100, the other end of the sixth resistor R13 is connected to the fifth resistor R21 in the second voltage dividing module 300, the first frequency dividing capacitor C1 is connected in parallel to two ends of the sixth resistor R13, and the second frequency dividing capacitor C2 is connected in parallel to two ends of the first frequency dividing capacitor C1. The frequency division is performed by the first frequency division capacitor C1 and the second frequency division capacitor C2, and then the SPL value of the speaker is adjusted by the switch module 200 and the second voltage division module 300. Through changing the capacitance values of the first frequency division capacitor C1 and the second frequency division capacitor C2, SPL values in different frequency bands can be adjusted, personalized customization is carried out for low frequency, high frequency and ultrahigh frequency, and the use requirements of different users are met.
In a second embodiment of the present utility model, as shown in fig. 2, the switch module 200 includes a frequency modulation switch 230 and a sensitivity switch 240, and the frequency modulation switch 230 is connected to the second voltage division module 300; the sensitivity switch 240 is connected to the first voltage dividing module.
In this embodiment, the number of the fm switches 230 is three, and the number of the sensitivity switches 240 is one. The frequency modulation switch 230 specifically includes a first switch S11, a second switch S12, and a third switch S13, and the sensitivity switch 240 specifically includes a fourth switch S14. Closing the first switch S11 increases the sound pressure level by 1dB, closing the first switch S11 and the second switch S12 increases the sound pressure level by 2dB, closing the first switch S11, the second switch S12 and the third switch S13 increases the sound pressure level by 3dB, and closing the fourth switch S14 increases the overall sound pressure level by 3dB, thereby improving the sensitivity of the whole switch module 200. Through the arrangement, the loudspeaker can accurately adjust the sound pressure level of the 20-300Hz frequency band, and the accuracy is higher.
Specifically, the first voltage dividing module 100 includes a first resistor R15 and a second resistor R18, one end of the first resistor R15 is connected to one end of the sensitivity switch 240, one end of the second resistor R18 is connected to the other end of the first resistor R15, and one end of the three frequency modulation switches 230 and one end of the sensitivity switch 240 are both connected to one end of the second resistor R18.
Specifically, the second voltage dividing module 300 includes a third resistor R20, a fourth resistor R19, and a fifth resistor R21, where one end of the third resistor R20, and one end of the fifth resistor R21 are respectively connected to the other end of the corresponding fm switch 230; the other end of the third resistor R20, the other end of the fourth resistor R19 and the other end of the fifth resistor R21 are all connected to the frequency dividing module 400.
Specifically, the frequency division module 400 includes a sixth resistor R13, a first frequency division capacitor C1, and a second frequency division capacitor C2; one end of the sixth resistor R13 is connected to the second resistor R18 in the first voltage dividing module 100, the other end of the sixth resistor R13 is connected to the fifth resistor R21 in the second voltage dividing module 300, the first frequency dividing capacitor C1 is connected in parallel to two ends of the sixth resistor R13, and the second frequency dividing capacitor C2 is connected in parallel to two ends of the first frequency dividing capacitor C1. The frequency division is performed by the first frequency division capacitor C1 and the second frequency division capacitor C2, and then the SPL value of the speaker is adjusted by the switch module 200 and the second voltage division module 300. Through changing the capacitance values of the first frequency division capacitor C1 and the second frequency division capacitor C2, SPL values in different frequency bands can be adjusted, personalized customization is carried out for low frequency, high frequency and ultrahigh frequency, and the use requirements of different users are met.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. A speaker frequency adjustment circuit, comprising: the device comprises a first voltage dividing module, a switch module, a second voltage dividing module and a frequency dividing module, wherein the switch module is connected with the first voltage dividing module, the second voltage dividing module is connected with the switch module, and the frequency dividing module is connected with the first voltage dividing module and the second voltage dividing module.
2. The speaker frequency adjustment circuit of claim 1, wherein the switch module is a dial switch, the dial switch being connected to both the first voltage divider module and the second voltage divider module.
3. The speaker frequency adjustment circuit of claim 2, wherein the dial switch comprises a frequency modulation dial key and a sensitivity dial key, the frequency modulation dial key being coupled to the second voltage divider module and the sensitivity dial key being coupled to the first voltage divider module.
4. A loudspeaker frequency adjustment circuit according to claim 3, wherein the number of fm keys is three and the number of sensitivity keys is one.
5. The speaker frequency adjustment circuit of claim 4, wherein the first voltage divider module comprises a first resistor and a second resistor, wherein one end of the first resistor is connected to one end of the sensitivity dial key, one end of the second resistor is connected to the other end of the first resistor, and one end of the three fm dial keys and one end of the sensitivity dial key are connected to one end of the second resistor.
6. The speaker frequency adjustment circuit as set forth in claim 4, wherein said second voltage dividing module includes a third resistor, a fourth resistor, and a fifth resistor, one end of said third resistor, and one end of said fifth resistor being connected to the other end of the corresponding fm dial key, respectively; the other end of the third resistor, the other end of the fourth resistor and the other end of the fifth resistor are all connected with the frequency dividing module.
7. The speaker frequency adjustment circuit as recited in claim 1, wherein the switch module comprises a frequency modulation switch and a sensitivity switch, the frequency modulation switch being connected to the second voltage division module; the sensitivity switch is connected with the first voltage dividing module.
8. The speaker frequency adjustment circuit as recited in claim 7, wherein the number of the fm switches is three and the number of the sensitivity switches is one.
9. The speaker frequency adjustment circuit as recited in claim 8, wherein the first voltage dividing module includes a first resistor and a second resistor, one end of the first resistor is connected to one end of the sensitivity switch, one end of the second resistor is connected to the other end of the first resistor, and one end of the three frequency modulation switches and one end of the sensitivity switch are connected to one end of the second resistor; the second voltage dividing module comprises a third resistor, a fourth resistor and a fifth resistor, wherein one end of the third resistor, one end of the third resistor and one end of the fifth resistor are respectively connected with the other end of the corresponding frequency modulation switch; the other end of the third resistor, the other end of the fourth resistor and the other end of the fifth resistor are all connected with the frequency dividing module.
10. The speaker frequency adjustment circuit as recited in any one of claims 1-9, wherein the crossover module includes a sixth resistor, a first crossover capacitor, and a second crossover capacitor; one end of the sixth resistor is connected with the second resistor in the first voltage division module, the other end of the sixth resistor is connected with the fifth resistor in the second voltage division module, the first frequency division capacitor is connected in parallel with two ends of the sixth resistor, and the second frequency division capacitor is connected in parallel with two ends of the first frequency division capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320395114.5U CN219612009U (en) | 2023-03-04 | 2023-03-04 | Speaker frequency adjusting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320395114.5U CN219612009U (en) | 2023-03-04 | 2023-03-04 | Speaker frequency adjusting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219612009U true CN219612009U (en) | 2023-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320395114.5U Active CN219612009U (en) | 2023-03-04 | 2023-03-04 | Speaker frequency adjusting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219612009U (en) |
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2023
- 2023-03-04 CN CN202320395114.5U patent/CN219612009U/en active Active
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