Sound equipment with electronic frequency division and analog frequency division

Abstract

The utility model discloses sound equipment with electronic frequency division and analog frequency division, which comprises an audio input end, an audio decoder electrically connected with the audio input end, an electronic frequency divider electrically connected with the audio decoder, a power amplifier electrically connected with the electronic frequency divider, and an analog frequency division module electrically connected with the power amplifier, and the loudspeaker is electrically connected with the analog frequency division module. The audio decoder decodes audio signals input by the audio input end and then transmits the audio signals to the electronic frequency divider, and the electronic frequency divider carries out electronic frequency division on the decoded audio signals to form audio signals of all frequency bands and transmits the audio signals to the power amplifier for amplification. And the analog frequency division module performs analog frequency division on the audio signal amplified by the power amplifier and then plays the audio signal through the loudspeaker, so that the loudspeaker plays the audio input from the audio input end, and the audio played by the loudspeaker is relatively soft while accurate frequency division is realized, so that the original sound effect is better reserved.

Description

Technical Field

[0001] The utility model relates to the technical field of audio, in particular to an audio with electronic frequency division and analog frequency division. Background Art

[0002] As we all know, audio equipment generally consists of speakers, power amplifier modules, and crossover modules. The crossover modules are generally electronic and analog. When the crossover module is electronic, after the audio data is input, it is first divided by the crossover module, and then the divided audio is amplified by the power amplifier module and played through the speaker; when the crossover module is analog, after the audio data is input, it is first amplified by the power amplifier module, and then divided by the analog crossover and played through the speaker, so as to achieve the playback of high, medium and low frequencies, so that the played audio has more layers and three-dimensionality.

[0003] Among them, the use of electronic frequency division can accurately distinguish between treble and bass, that is, the frequency points of treble and bass played through the speaker are more accurate, making the audio flatter, resulting in poor audio softness and signal smoothness; while the use of analog frequency division for audio frequency division, the audio softness and signal smoothness after division are better, and the sound played is softer and smoother, but the frequency division accuracy is not enough for electronic frequency division, and is not enough to meet user needs. Utility Model Content

[0004] The main purpose of the utility model is to provide a speaker with electronic frequency division and analog frequency division, which is used to solve the problem that the audio obtained by the existing speakers using electronic frequency division or analog frequency division cannot simultaneously meet the requirements of accurate frequency division and better audio softness.

[0005] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0006] A speaker with electronic frequency division and analog frequency division, comprising: an audio input terminal for inputting audio, an audio decoder electrically connected to the audio input terminal, an electronic frequency divider electrically connected to the audio decoder, a power amplifier electrically connected to the electronic frequency divider, an analog frequency division module electrically connected to the power amplifier, and a speaker electrically connected to the analog frequency division module;

[0007] The audio decoder is used to decode the audio signal input from the audio input end and transmit it to the electronic frequency divider. The electronic frequency divider is used to electronically divide the decoded audio signal to form audio signals of each frequency band and transmit them to the power amplifier for amplification. The analog frequency division module is used to perform analog frequency division on the audio signal amplified by the power amplifier and play it through the speaker.

[0008] Furthermore, the speaker further includes an inverter, and the audio input terminal is electrically connected to the audio decoder via the inverter;

[0009] The inverter is used to enhance the audio signal input from the audio input terminal and transmit the enhanced audio signal to the audio decoder.

[0010] Furthermore, the number of the speakers is 4, namely, two tweeters and two woofers; the number of the analog crossover modules is 4, namely, two first analog crossover units and two second analog crossover units; wherein, the two tweeters are each electrically connected to a first analog crossover unit, and the two woofers are each electrically connected to a second analog crossover unit.

[0011] Furthermore, each of the analog frequency division units includes a first capacitor, a first inductor and a second capacitor. The power amplifier is electrically connected to the speaker through the first capacitor and the second inductor in sequence. One end of the second capacitor is electrically connected to the output end of the second inductor, and the other end of the second capacitor is grounded.

[0012] Furthermore, the audio system also includes a functional operating component electrically connected to the electronic frequency divider and used for powering on, powering off, playing, pausing, adjusting the volume, and switching sound effect modes.

[0013] Furthermore, the functional operation component includes: a first touch switch chip, a second touch switch chip and a third touch switch chip electrically connected to the electronic divider, a first touch key electrically connected to the first touch switch chip, a second touch key electrically connected to the second touch switch chip, and a third touch key electrically connected to the third touch switch chip.

[0014] Furthermore, the audio input end is a coaxial audio interface.

[0015] Furthermore, the audio system further includes a power module and a power interface electrically connected to the power module and used for an external power supply. The power module is electrically connected to the power amplifier, the audio decoder, and the electronic crossover, respectively.

[0016] Furthermore, the audio system further includes a first crystal oscillator unit and a second crystal oscillator unit, wherein the first crystal oscillator unit is electrically connected to the audio decoder, and the second crystal oscillator unit is electrically connected to the electronic frequency divider.

[0017] Furthermore, the audio system further includes an indicator light unit electrically connected to the electronic frequency divider for indication.

[0018] The present invention has the following beneficial effects: Compared with the prior art, the present invention uses an audio decoder to decode the audio signal input from the audio input terminal and then transmit the data to the power amplifier for amplification. The electronic frequency divider is then used to electronically divide the audio signal amplified by the power amplifier to form audio data of each frequency band and transmit it to the analog frequency division module. The analog frequency division module then performs analog frequency division on the audio data of each frequency band and plays it through the speaker, thereby enabling the speaker to play the audio input from the audio input terminal. Moreover, by configuring the electronic frequency divider and the analog frequency division module in coordination, while achieving precise frequency division, the audio played by the speaker can also be relatively soft, thereby better preserving the original sound effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is the circuit schematic diagram of the utility model;

[0021] Figure 2 This is a circuit diagram of the utility model in which the audio input terminal is connected to the inverter;

[0022] Figure 3 This is a circuit diagram of the audio decoder of the present utility model;

[0023] Figure 4 This is a circuit diagram of the first crystal oscillator unit of the present invention;

[0024] Figure 5 This is the circuit diagram of the electronic frequency divider of the utility model;

[0025] Figure 6 This is a circuit diagram of the second crystal oscillator unit of the present invention;

[0026] Figure 7 This is a circuit diagram of the first touch switch chip of the utility model;

[0027] Figure 8 This is a circuit diagram of the second touch switch chip of the present invention;

[0028] Figure 9 This is a circuit diagram of the third touch switch chip of the present utility model;

[0029] Figure 10 This is the circuit diagram of the indicator light of the utility model;

[0030] Figure 11 This is a circuit diagram of the power amplifier and analog frequency division module of the utility model. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Refer to the attached Figure 1-11 , a speaker with electronic frequency division and analog frequency division in an embodiment of the utility model.

[0033] The audio system includes: an audio input terminal 1 for inputting audio, an audio decoder 3 electrically connected to the audio input terminal 1, an electronic frequency divider 4 electrically connected to the audio decoder 3, a power amplifier 5 electrically connected to the electronic frequency divider 4, an analog frequency divider module 6 electrically connected to the power amplifier 5, and a speaker 7 electrically connected to the analog frequency divider module 6. The audio decoder 3 is used to decode the audio signal input from the audio input terminal 1 and transmit it to the electronic frequency divider 4. The electronic frequency divider 4 is used to electronically divide the decoded audio signal into audio signals of various frequency bands and transmit them to the power amplifier 5 for amplification. The analog frequency divider module 6 is used to perform analog frequency division on the audio signal amplified by the power amplifier 5 and play it through the speaker 7, so that the speaker 7 can play the audio input from the audio input terminal 1.

[0034] Moreover, the present invention cooperates with the electronic frequency divider 4 and the analog frequency divider module 6 to achieve accurate frequency division while making the audio played by the speaker 7 relatively soft, so as to better preserve the original sound effect, thereby solving the problem that the audio obtained by the existing audio system using electronic frequency division or analog frequency division cannot simultaneously meet the requirements of accurate frequency division and better audio softness.

[0035] Specifically, the audio input terminal 1 is connected to an external device via an audio cable and inputs an audio signal.

[0036] In one embodiment, the speaker further includes an inverter 2, through which the audio input terminal 1 is electrically connected to the audio decoder 3. Inverter 2 is configured to amplify the audio signal input from the audio input terminal 1 and transmit the amplified audio signal to the audio decoder 3. Because audio signals attenuate during transmission through audio cables, inverter 2, by inverting the audio signal input from the audio input terminal 1 twice, can enhance the audio signal and restore the audio signal input from the external device.

[0037] Specifically, the inverter 2 may be a chip of type 74HC04D, 74LS04, or the like.

[0038] In one embodiment, the number of speakers 7 is four, namely, two tweeters 71 and two woofers 72; the number of analog crossover modules 6 is four, namely, two first analog crossover units 61 and two second analog crossover units 62; wherein, the two tweeters 71 are each electrically connected to a first analog crossover unit 61, and the two woofers 72 are each electrically connected to a second analog crossover unit 62.

[0039] Specifically, the electronic crossover divides the decoded audio signal into left channel treble audio, left channel bass audio, right channel treble audio and right channel bass audio, and amplifies the four divided audio frequency bands through the power amplifier 5 and then performs analog frequency division on each of them through an analog frequency division module 6, and finally plays them through the speaker 7, that is, one speaker 7 plays the left channel treble audio, one speaker 7 plays the left channel bass audio, one speaker 7 plays the right channel treble audio, and the other speaker 7 plays the right channel treble audio. In this way, one speaker can play stereo sound effects to meet the user's demand for stereo sound, and can make the played audio have a sense of layering.

[0040] It should be noted that the electrical connection between the analog crossover module 6 and the speaker 7 is an electrical connection to the voice coil on the speaker 7. Based on this, the number of speakers 7 can also be three, wherein one speaker 7 can have two voice coils, that is, each voice coil is electrically connected to an analog crossover module 6. Of course, in other embodiments, the number of speakers 7 can also be two, that is, one speaker 7 is used to play high notes and one speaker 7 is used to play low notes. Alternatively, when the electronic crossover 4 divides the frequency to obtain mid-range audio, the power amplifier 5 and the speaker 7 can also play the mid-range audio. Here, the audio frequency band obtained by the electronic crossover 4 through electronic division is not limited.

[0041] In the above embodiment, the audio decoder 3 uses a stereo chip. Specifically, the audio decoder 3 can use a chip model such as AC6966B or AC6956. The electronic crossover 4 can use a chip model such as JL7018 or JL7012. The chip models of the electronic crossover 4 and the audio decoder 3 are not limited herein. Each analog crossover module 6 includes a first capacitor, a first inductor, and a second capacitor. The power amplifier 5 is electrically connected to the speaker 7 via the first capacitor and the second inductor, respectively. One end of the second capacitor is electrically connected to the output end of the second inductor, and the other end of the second capacitor is grounded. In other words, the analog crossover module 6 is a high-pass filter or a low-pass filter. Depending on the desired treble or bass, the audio frequency divided by each analog crossover module 6 is audio of a specific frequency band. For example, when the analog crossover module 6 is a low-pass filter, the audio frequency divided by the analog crossover module 6 can produce bass audio; when the analog crossover module 6 is a high-pass filter, the audio frequency divided by the analog crossover module 6 can produce treble audio.

[0042] That is, one speaker 7 plays the left channel treble audio, one speaker 7 plays the left channel bass audio, one speaker 7 plays the right channel treble audio, and another speaker 7 plays the right channel treble audio. The first analog frequency division unit 61 is a high-pass filter, and the second analog frequency division unit 62 is a low-pass filter.

[0043] In one embodiment, the audio input terminal 1 is a coaxial audio interface. Using the coaxial audio interface, the audio output from the TV can be directly output and played directly through the speakers of the present invention, which is convenient for users. This solves the problem of existing audio output from the TV requiring a digital processor, power amplifier, and speakers to be played. In this embodiment, the power amplifier, frequency divider, and speaker 7 are integrated into one, making it more convenient for users.

[0044] In the above embodiment, the audio system further includes a first crystal oscillator unit 31 and a second crystal oscillator unit 42. The first crystal oscillator unit 31 is electrically connected to the audio decoder 3, and the second crystal oscillator unit 42 is electrically connected to the electronic crossover 4. The first crystal oscillator unit 31 is used to provide a clock signal to the audio decoder 3, thereby ensuring that the audio decoder 3 operates in an orderly manner. The second crystal oscillator unit 42 is used to provide a clock signal to the electronic crossover 4, thereby ensuring that the electronic crossover 4 operates in an orderly manner.

[0045] In one embodiment, the speaker further includes a functional operating component 8 electrically connected to the electronic crossover 4 and configured to power on, power off, play, pause, adjust the volume, and switch sound effect modes. Through the functional operating component 8, the user can turn the speaker on or off, pause and play audio, adjust the volume of the audio being played, or adjust the sound effect mode for user convenience.

[0046] Specifically, in one embodiment, the functional operation component 8 can be a touch switch, a switch button, or a knob.

[0047] In one embodiment, the function operation component 8 includes: a first touch switch chip 81, a second touch switch chip 82, and a third touch switch chip 83 electrically connected to the electronic crossover 4; a first touch key 84 electrically connected to the first touch switch chip 81; a second touch key 85 electrically connected to the second touch switch chip 82; and a third touch key 86 electrically connected to the third touch switch chip 83. When a user touches the first touch key 84, such as a long touch, the audio system of this embodiment can be turned on or off via the first touch switch chip 81 and the electronic crossover 4; a short touch on the first touch key 84 can control the pause and play of the audio; a touch on the second touch key 85 can increase the playback volume; a long touch on the third touch key 86 can decrease the playback volume; and a short touch on the third touch key 86 can switch and adjust the audio effect mode. The audio effect mode can be a bass mode, a surround sound mode, or the like.

[0048] Specifically, the first touch key 84 , the second touch key 85 and the third touch key 86 may all be touch springs or touch sheets.

[0049] In one embodiment, the audio system further includes a power supply module 9 and a power supply interface 91 electrically connected to the power supply module 9 and used for an external power supply. The power supply module 9 is electrically connected to the power amplifier 5, the audio decoder 3, and the electronic frequency divider 4, respectively. The power supply module 9 is used to process the power input into a power supply adapted to the power amplifier 5, the audio decoder 3, the electronic frequency divider 4, the inverter 2, the first touch switch chip 81, the second touch switch chip 82, and the third touch switch chip 83, so that the power amplifier 5, the audio decoder 3, the electronic frequency divider 4, the inverter 2, the first touch switch chip 81, the second touch switch chip 82, and the third touch switch chip 83 can be powered on and operated.

[0050] In one embodiment, the audio system further includes an indicator light unit 10 electrically connected to the electronic crossover 4 for indication. The indicator light unit 10 is used to light up or flash when the power interface is connected to power or the function operating component is operated, so that the user can understand the status of the audio system of this embodiment.

[0051] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] In addition, the descriptions of "first", "second", etc. in this utility model are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0053] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A speaker with electronic frequency division and analog frequency division, characterized in that: include: An audio input terminal for inputting audio, an audio decoder electrically connected to the audio input terminal, an electronic frequency divider electrically connected to the audio decoder, a power amplifier electrically connected to the electronic frequency divider, an analog frequency division module electrically connected to the power amplifier, and a speaker electrically connected to the analog frequency division module; The audio decoder is used to decode the audio signal input from the audio input end and transmit it to the electronic frequency divider. The electronic frequency divider is used to electronically divide the decoded audio signal to form audio signals of each frequency band and transmit them to the power amplifier for amplification. The analog frequency division module is used to perform analog frequency division on the audio signal amplified by the power amplifier and play it through the speaker.

2. The speaker with electronic frequency division and analog frequency division according to claim 1, characterized in that: The speaker further includes an inverter, and the audio input terminal is electrically connected to the audio decoder via the inverter; The inverter is used to enhance the audio signal input from the audio input terminal and transmit the enhanced audio signal to the audio decoder.

3. The speaker with electronic frequency division and analog frequency division according to claim 1, characterized in that: The number of the speakers is 4, namely, two tweeters and two woofers; the number of the analog crossover modules is 4, namely, two first analog crossover units and two second analog crossover units; wherein, the two tweeters are each electrically connected to a first analog crossover unit, and the two woofers are each electrically connected to a second analog crossover unit.

4. The speaker with electronic frequency division and analog frequency division according to claim 3, characterized in that: Each of the analog frequency division units includes a first capacitor, a first inductor and a second capacitor. The power amplifier is electrically connected to the speaker via the first capacitor and the second inductor in sequence. One end of the second capacitor is electrically connected to the output end of the second inductor, and the other end of the second capacitor is grounded.

5. The speaker with electronic frequency division and analog frequency division according to any one of claims 1 to 4, characterized in that: The audio input end is a coaxial audio interface.

6. The speaker with electronic frequency division and analog frequency division according to any one of claims 1 to 4, characterized in that: The audio system also includes a functional operating component that is electrically connected to the electronic frequency divider and is used for powering on, powering off, playing, pausing, adjusting the volume, and switching sound effect modes.

7. The speaker with electronic frequency division and analog frequency division according to claim 6, characterized in that: The functional operation component includes: a first touch switch chip, a second touch switch chip and a third touch switch chip electrically connected to the electronic divider, a first touch key electrically connected to the first touch switch chip, a second touch key electrically connected to the second touch switch chip, and a third touch key electrically connected to the third touch switch chip.

8. The speaker with electronic frequency division and analog frequency division according to any one of claims 1 to 4, characterized in that: The audio system further includes a power module and a power interface electrically connected to the power module and used for an external power supply. The power module is electrically connected to the power amplifier, the audio decoder, and the electronic frequency divider respectively.

9. The speaker with electronic frequency division and analog frequency division according to any one of claims 1 to 4, characterized in that: The audio system further includes a first crystal oscillator unit and a second crystal oscillator unit. The first crystal oscillator unit is electrically connected to the audio decoder, and the second crystal oscillator unit is electrically connected to the electronic frequency divider.

10. The speaker with electronic frequency division and analog frequency division according to any one of claims 1 to 4, characterized in that: The audio system further includes an indicator light unit electrically connected to the electronic frequency divider for indicating.

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