Ultrahigh audio sound box

Abstract

The utility model discloses an ultrahigh audio sound box which is provided with a signal source input module, a signal processing module, a power amplification module, a filter module and a loudspeaker module, and a plurality of filters used for filtering different audio frequency bands are arranged in the filter module. After the filters are arranged in the loudspeaker module and the loudspeakers corresponding to the filters are arranged in the loudspeaker module, the corresponding audio segments can be obtained through filtering of the different filters, and then the corresponding loudspeakers can play corresponding audios, so that the audio function that one loudspeaker box plays different audio segments can be achieved, the use scene of the audio loudspeaker box is effectively widened, and the use experience of the loudspeaker box is improved. And the generation cost of the audio sound box is reduced. The circuit can be widely applied to the technical field of electronic circuits.

Description

Technical Field

[0001] This utility model relates to the field of electronic circuit technology, and in particular to an ultra-high frequency speaker. Background Technology

[0002] Since the human ear can hear audio frequencies between 20Hz and 20kHz, most traditional audio speakers can only play audio frequencies in this range. However, different audio frequencies have different functions in real life. For example, ultra-high frequency audio (20kHz to 36kHz) can be used to repel mosquitoes, birds, and rodents. The limited range of audio frequencies played by existing audio speakers restricts their application scenarios. If other audio frequencies are required, different audio speakers need to be designed, increasing the manufacturing cost. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an ultra-high frequency speaker capable of playing audio in different frequency bands, thereby expanding the application scenarios of audio speakers and reducing their production costs.

[0004] To achieve the above objectives, this application provides an ultra-high frequency (UHF) speaker, which includes:

[0005] A signal source input module, wherein the input terminal of the signal source input module is connected to the signal source generating device;

[0006] A signal processing module, wherein the input terminal of the signal processing module is connected to the output terminal of the signal source input module;

[0007] A power amplifier module, wherein the input terminal of the power amplifier module is connected to the output terminal of the signal processing module;

[0008] The filter module includes several filters for filtering different audio frequency bands, and the input terminals of all the filters are connected to the output terminal of the power amplifier module.

[0009] A speaker module comprising a plurality of speakers, wherein the input terminal of each speaker is connected to the output terminal of one of the filters.

[0010] In some embodiments, the filter includes:

[0011] The first inductor, with its first end connected to the positive output terminal of the power amplifier module;

[0012] A second inductor, the first end of which is connected to the second end of the first inductor, and the second end of which is connected to the input terminal of one of the speakers;

[0013] A first capacitor, wherein a first terminal of the first capacitor is connected to a second terminal of the first inductor;

[0014] The second capacitor has its first terminal connected to the second terminal of the second inductor, and both the second terminals of the first capacitor and the second capacitor are grounded.

[0015] In some embodiments, the filter includes:

[0016] The third capacitor has its first terminal connected to the positive output terminal of the power amplifier module and its second terminal connected to the input terminal of a speaker.

[0017] The third inductor has its first terminal connected to the second terminal of the third capacitor, and the second terminal of the third inductor is grounded.

[0018] In some embodiments, the speaker includes a tweeter.

[0019] In some embodiments, the tweeter includes a housing and a diaphragm component; the diaphragm component is attached to one end of the housing, and the input end of the diaphragm component is connected to the output end of the waveguide.

[0020] In some embodiments, the diaphragm component comprises an aluminum diaphragm.

[0021] In some embodiments, the aluminum diaphragm includes an aluminum diaphragm treated with an anodizing process.

[0022] In some embodiments, the middle portion of the diaphragm component is hemispherical.

[0023] In some embodiments, the outer casing comprises a plastic casing.

[0024] In some embodiments, the signal processing module includes:

[0025] A digital signal processor, wherein the input terminal of the digital signal processor is connected to the output terminal of the signal source input module;

[0026] A digital-to-analog converter, wherein the input terminal of the digital-to-analog converter is connected to the output terminal of the digital signal processor, and the output terminal of the digital signal processor is connected to the input terminal of the power amplifier module.

[0027] The embodiments of this application include at least the following beneficial effects: This application provides an ultra-high frequency audio speaker. After setting a signal source input module, a signal processing module, a power amplification module, a filter module, and a speaker module, the speaker module is equipped with several filters for filtering different audio frequency bands, and the speaker module is equipped with a speaker corresponding to each filter. The corresponding audio band can be obtained by filtering through different filters, so that the corresponding speaker can play the corresponding audio. This enables a speaker to play audio of different audio bands, effectively broadening the application scenarios of the audio speaker and reducing the production cost of the audio speaker.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0030] Figure 1 This is a schematic diagram of the ultra-high frequency speaker module according to an embodiment of the present utility model;

[0031] Figure 2 This is a circuit diagram of a low-pass filter according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram illustrating the working principle of the low-pass filter according to an embodiment of the present invention;

[0033] Figure 4 This is a circuit diagram of a high-pass filter according to an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram illustrating the working principle of the high-pass filter according to an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the loudspeaker according to an embodiment of the present invention. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0040] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] Reference Figure 1 This application discloses an ultra-high frequency speaker, which includes a signal source input module, a signal processing module, a power amplification module, a filter module, and a speaker module. The power amplification module includes a power amplifier, the filter module includes several filters for filtering different audio frequency bands, and the speaker module includes several speakers. Specifically, the input terminal of the signal source input module is connected to a signal source generating device, the input terminal of the signal processing module is connected to the output terminal of the signal source input module, the input terminal of the power amplification module is connected to the output terminal of the signal processing module, the input terminals of all filters are connected to the output terminal of the power amplification module, and the input terminal of each speaker is connected to the output terminal of one filter.

[0042] It is understood that the signal source generating device can be used to generate the original audio signal to be played. For example, if birdsong is to be played, the original signal of the birdsong can be output by the signal source generating device. After the signal source generating device outputs the original signal, it is input to the signal processing module through the signal source input module. The signal processing module processes the original signal to obtain a signal that can be received by the power amplification module. Then, the power amplification module amplifies the input signal to facilitate the corresponding filtering operation by the filter module. Specifically, the filter in the filter module can filter the signal to obtain a signal of the corresponding frequency band, so that the speaker corresponding to the filter can play the audio of the corresponding frequency band. In this embodiment, since audio of different frequency bands has different functions and their playback processes are complementary, when the original signal contains an original audio signal of the corresponding frequency band, the corresponding speaker can play the audio of the corresponding frequency band. Specifically, this embodiment can also set corresponding switching elements to select different band filters to perform the current filtering operation, so that only the corresponding speaker performs the audio playback function, thereby effectively saving the power consumption of the speaker.

[0043] It is understandable that when a low-pass filter exists in the filter module, such as Figure 2 As shown, the filter includes a first inductor L1, a second inductor L2, a first capacitor C1, and a second capacitor C2. The first terminal of the first inductor L1 is connected to the positive output terminal of the power amplifier module. The first terminal of the second inductor L2 is connected to the second terminal of the first inductor L1, and the second terminal of the second inductor L2 is connected to the input terminal of a speaker S. The first terminal of the first capacitor C1 is connected to the second terminal of the first inductor L1, and the first terminal of the second capacitor C2 is connected to the second terminal of the second inductor L2. Both the second terminals of the first capacitor C1 and the second terminal of the second capacitor C2 are grounded (GND). Figure 3 As can be seen, after the filter in this embodiment filters the audio signal, it can make the speaker only play audio with a frequency between 20Hz and 20KHz.

[0044] It is understandable that when a high-pass filter exists in the filter module, such as Figure 4 As shown, the filter includes a third capacitor C3 and a third inductor L3. The first terminal of the third capacitor C3 is connected to the positive output terminal of the power amplifier module, the second terminal of the third capacitor C3 is connected to the input terminal of a speaker S, the first terminal of the third inductor L3 is connected to the second terminal of the third capacitor C3, and the second terminal of the third inductor L3 is grounded (GND). Figure 5 It is understood that the filter implemented in this application can filter the audio signal so that the speaker can only play audio with a frequency between 20KHz and 40KHz.

[0045] pass Figure 2 and Figure 4 As can be seen from the circuit shown, the ultra-high frequency speaker of this application embodiment can play audio with a frequency between 20Hz and 40KHz, thereby effectively expanding the playback frequency band of the audio speaker and thus broadening the application scenarios of the audio speaker.

[0046] It is understood that all speakers in this embodiment can be tweeters, such as... Figure 6 As shown, the tweeter includes a housing 620 and a diaphragm component 610. The diaphragm component 610 is attached to one end of the housing 620, and its input end is connected to the output end of the filter. In this embodiment, after the filter obtains the audio signal of the target frequency band, the diaphragm component converts the electrical signal into mechanical vibration. Specifically, when current passes through the voice coil, the generated magnetic field causes the diaphragm component to vibrate, thereby generating sound waves by pushing air.

[0047] It is understood that the diaphragm component in this embodiment includes an aluminum diaphragm. Since the density of aluminum is only about one-third that of steel, it can effectively increase the speaker's playback frequency. Specifically, the aluminum diaphragm can be an aluminum diaphragm treated with an anodizing process. The hardness of the aluminum diaphragm treated with anodizing is greatly increased, up to 10 times that of ordinary aluminum diaphragms, thereby enabling the speaker to generate higher sound pressure levels and higher frequencies in the ultrasonic band, that is, raising the audio band to 40kHz.

[0048] It is understandable that, such as Figure 6 As shown, the middle part of the diaphragm component is hemispherical to facilitate the formation of sound waves. The housing can be made of plastic, which can effectively reduce the weight of the speaker.

[0049] It is understood that the signal processing module in this embodiment includes a digital signal processor (DSP) and a digital-to-analog converter (DAC). The input terminal of the DSP is connected to the output terminal of the signal source input module, the input terminal of the DAC is connected to the output terminal of the DSP, and the output terminal of the DSP is connected to the input terminal of the power amplifier module. Specifically, the DSP is used to optimize sound quality to improve audio clarity and balance. The DAC converts the digital signal into an analog signal, enabling the power amplifier module to effectively amplify the signal.

[0050] As can be seen from the above, the ultra-high frequency speaker provided in this application embodiment can play audio over a wider frequency band through a single audio speaker, thereby effectively expanding the application scenarios of the audio speaker and reducing the production cost of the audio speaker.

[0051] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. An ultra-high audio speaker, characterized in that, The ultrahigh audio speaker includes: A signal source input module, an input end of which is connected with a signal source generating device; A signal processing module, an input end of which is connected with an output end of the signal source input module; A power amplification module, an input end of which is connected with an output end of the signal processing module; A filter module, which includes a plurality of filters for filtering different audio frequency bands, input ends of all the filters being connected with an output end of the power amplification module; A speaker module, which includes a plurality of speakers, an input end of each of the speakers being connected with an output end of one of the filters.

2. The high frequency loudspeaker of claim 1, wherein, The filter includes: A first inductor, a first end of which is connected with a positive output end of the power amplification module; A second inductor, a first end of which is connected with a second end of the first inductor, a second end of which is connected with an input end of one of the speakers; A first capacitor, a first end of which is connected with the second end of the first inductor; A second capacitor, a first end of which is connected with the second end of the second inductor, second ends of the first and second capacitors being grounded.

3. The high frequency loudspeaker of claim 1, wherein, The filter includes: A third capacitor, a first end of which is connected with the positive output end of the power amplification module, a second end of which is connected with the input end of one of the speakers; A third inductor, a first end of which is connected with the second end of the third capacitor, a second end of which is grounded.

4. The high frequency loudspeaker of claim 1, wherein, The speaker includes a high-pitched speaker.

5. The high frequency loudspeaker of claim 4, wherein, The high-pitched speaker includes a shell and a diaphragm component, the diaphragm component being close to one end of the shell, an input end of the diaphragm component being connected with an output end of the filter.

6. The high frequency loudspeaker of claim 5, wherein, The diaphragm component includes an aluminum diaphragm.

7. The high frequency loudspeaker of claim 6, wherein, The aluminum diaphragm includes an aluminum diaphragm processed by an anodization process.

8. The high frequency loudspeaker of claim 5, wherein, A middle part of the diaphragm component is in a semispherical shape.

9. The high frequency loudspeaker of claim 5, wherein, The shell includes a plastic shell.

10. The high frequency loudspeaker of claim 1, wherein, The signal processing module includes: A digital signal processor, an input end of which is connected with an output end of the signal source input module; A digital-to-analog converter, an input end of which is connected with an output end of the digital signal processor, an output end of the digital signal processor being connected with an input end of the power amplification module.

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