A wireless karaoke device

Abstract

The utility model discloses a wireless karaoke device relates to wireless sound technology field, the device includes: wireless microphone, power amplifier control module, audio frequency processing module and anti howling module, power amplifier control module has the interconnect AK7604 chip and A7900 chip, and the first communication end of A7900 chip is linked with the data communication interface of anti howling module, the second communication end of AK7604 chip is linked with audio frequency processing module, wireless microphone is connected with anti howling module through data receiving end, wherein, data receiving end includes wireless communication end at least, the utility model discloses the convenience of K song is improved the tone quality effect at the same time.

Description

Technical Field

[0001] This utility model relates to the field of wireless audio technology, and in particular to a wireless karaoke device. Background Technology

[0002] With the increasing popularity of in-car entertainment systems and home audio-visual equipment, karaoke has become a common pastime for the public, and consumers are also placing higher demands on the audio equipment used in karaoke.

[0003] Traditional audio equipment generally adopts a basic power amplifier architecture, and is usually only equipped with wired connection components such as 3.5mm interface and RCA interface. The limitations of this structure make it unable to support wireless audio transmission, resulting in poor convenience of the equipment and difficulty in meeting users' needs for high-quality karaoke.

[0004] Therefore, how to effectively improve karaoke equipment and enhance user experience has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This invention provides a wireless karaoke device to solve the problem of how to achieve wireless connection between the device and a mobile terminal by integrating Bluetooth and a DSP decoder, thereby improving sound quality and user experience.

[0006] To address the aforementioned technical problems, this utility model provides a wireless karaoke device, comprising: Wireless microphone, power amplifier control module, audio processing module, and feedback prevention module; The power amplifier control module integrates an AK7604 chip and an A7900 chip that are interconnected. The first communication terminal of the A7900 chip is connected to the data communication interface of the anti-feedback module; the second communication terminal of the AK7604 chip is connected to the audio processing module. The wireless microphone is connected to the anti-feedback module via a data receiver, wherein the data receiver includes at least a wireless communication terminal.

[0007] Furthermore, the A7900 chip is equipped with a switch control terminal for connection to an external ACC switch system.

[0008] Furthermore, the device also includes a sound effect debugging module, which integrates an encoder VOL, an encoder BASS, and an encoder TRE, all of which are connected to the A7900 chip.

[0009] Furthermore, the AK7604 chip is equipped with an AUX input interface.

[0010] Furthermore, the audio processing module includes: an audio conversion unit, and an audio processing unit, an audio power amplifier unit, and a first audio operational amplifier unit that are respectively communicatively connected to the audio conversion unit.

[0011] Furthermore, the first audio operational amplifier unit integrates a 4558 first audio operational amplifier chip and an LLM837MX second audio operational amplifier chip that are interconnected.

[0012] Furthermore, the audio conversion unit has a built-in CD4052 audio conversion chip, which is connected to the audio control terminal of the A7900 chip.

[0013] Furthermore, the audio amplifier unit has a built-in audio amplifier chip with the chip model TDA-7850.

[0014] Furthermore, the AK7604 chip is connected to the audio processing unit through several channel output interfaces.

[0015] Furthermore, the audio processing module further includes: a second audio operational amplifier unit, which integrates a third audio operational amplifier chip of model LM837MX, and the third audio operational amplifier chip is provided with an audio source input interface for communication and interaction with external vehicle audio sources. Compared with the prior art, the beneficial effects of this utility model embodiment are at least one of the following: This invention combines a wireless microphone with an amplifier controller integrating AK7604 and A7900 chips, supporting DSP decoding and Bluetooth connectivity. It enables wireless karaoke functionality and various sound effect adjustments. High-fidelity decoding and amplifier output significantly improve sound quality, enhancing the user's karaoke experience. Using the AK7604 as a DSP decoder strengthens the device's decoding capabilities, resulting in purer sound quality and a higher signal-to-noise ratio. It also integrates an anti-feedback module compatible with wireless microphones, as well as an audio processing module for audio conversion, processing, operational amplifier, and power amplification, improving both the convenience of karaoke and the sound quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a wireless karaoke device in one embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the anti-feedback module 2, the power amplifier control module 3, and the audio processing module 4 in a wireless karaoke device according to one embodiment of this utility model. Figure 3 This is a schematic diagram of the circuit structure of a wireless karaoke device in one embodiment of this utility model. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this application, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used herein are for illustrative purposes only and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0020] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this utility model specification is for the purpose of describing specific embodiments only and is not intended to limit the utility model. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] One embodiment of this utility model provides a wireless karaoke device. For details, please refer to [link / reference]. Figure 1 , Figure 1 The diagram shows a wireless karaoke device in one embodiment of the present invention. It can be seen that the device includes: a wireless microphone 1, an anti-feedback module 2, a power amplifier control module 3, and an audio processing module 4.

[0022] For details, please refer to Figure 2 In this embodiment, the power amplifier control module 3 integrates an AK7604 chip and an A7900 chip that are interconnected. The first communication terminal of the A7900 chip is connected to the data communication interface of the anti-feedback module 2; the second communication terminal of the AK7604 chip is connected to the audio processing module 4.

[0023] The audio processing module 4 includes an audio conversion unit 41, and an audio processing unit 45, an audio power amplifier unit 44, and a first audio operational amplifier unit 42, which are respectively connected to the audio conversion unit 41.

[0024] Wireless microphone 1 is connected to anti-feedback module 2 via a data receiver, which includes both a wireless communication terminal and a wired communication terminal. Based on this, wireless microphone 1 is connected to the wireless communication terminal of anti-feedback module 2 to achieve wireless communication. In this embodiment, multiple microphone devices, such as wireless microphones A and B, can be connected.

[0025] It should be understood that the A7900 chip in this embodiment can realize wireless connection functions such as Bluetooth, and can wirelessly transmit the received and processed audio signals, thereby making the wireless karaoke experience better.

[0026] For further details, please refer to... Figure 3 As shown, in this embodiment, the data communication interface of the anti-feedback module 2 includes MIC-RX and MIC-TX data communication interfaces, which work together to transmit audio data. The MIC-TX data communication interface in this embodiment is also used for DET signal detection to ensure stable audio signal transmission. It also includes a DAC-OUT interface, which connects to the A7900 chip's input terminal for digital audio conversion. Furthermore, the anti-feedback module 2 in this embodiment supports a 5V power supply voltage.

[0027] Combination Figure 3 In this embodiment, the audio conversion unit 41 is connected to the audio control terminal of the A7900 chip. Preferably, the audio conversion unit 41 has a built-in audio conversion chip of model CD4052, which is controlled by the A7900 chip to realize multi-channel switching, modulation and other operations of audio signals.

[0028] This embodiment utilizes the AK7604 chip to perform DSP decoding on the audio data, and sends the decoded data to the connected audio processing unit 45 through several channel output interfaces for processing. The audio processing unit 45 can be selected from the BA3121 audio processing chip. For example, please refer to... Figure 3As shown, the AK7604 chip connects to two BA3121 audio processing chips via four channel output interfaces: FL-OUT, FR-OUT, RL-OUT, and RR-OUT, providing stereo surround sound.

[0029] In this embodiment, the first audio operational amplifier unit 42 integrates a first audio operational amplifier chip of model 4558 and a second audio operational amplifier chip of model LLM837MX that are interconnected. For details, please refer to [reference needed]. Figure 3 As shown, the two sets of chips interact with each other and are connected to the CD4052 audio conversion chip to work together to amplify the audio signal, thereby ensuring the clarity of the sound quality.

[0030] The audio processing module 4 in this embodiment further includes a second audio operational amplifier unit 43. The second audio operational amplifier unit 43 has a built-in third audio operational amplifier chip of model LM837MX. The third audio operational amplifier chip in this embodiment is provided with an audio source input interface for communication and interaction with external vehicle audio sources. Preferably, the audio source input interface adopts the mainstream 20P power supply and interface, which is compatible with vehicle Android large screen devices.

[0031] Regarding the audio amplifier unit 44, combined with Figure 3 As can be seen, this embodiment incorporates a TDA-7850 audio amplifier chip and four speakers connected to the chip, together forming a four-channel (front left, front right, rear left, rear right) audio amplification system. The audio processing module 4 of this embodiment also includes an audio operational amplifier chip, also model LM837MX, located between the audio amplifier unit 44 and the audio conversion unit 41. This chip receives and processes the audio signal sent by the audio conversion unit 41, and sends the processed signal to the audio amplifier unit 44 for amplification.

[0032] refer to Figure 3 As shown in the circuit structure, the A7900 chip also includes a switch control terminal for connecting to an external ACC switching system, enabling the start and stop operation of the external vehicle-mounted ACC switching system. It also features a power input interface for connecting to an external power supply system, supporting 5V power supply, and a USB interface.

[0033] Furthermore, this device also includes a sound effect adjustment module, which integrates an encoder (VOL), an encoder-end encoder (BASS), and an encoder-end encoder (TRE), all of which are connected to the A7900 chip. In this embodiment, it is used to adjust the VOL volume, BASS bass, and TRE treble via the encoder knob, and also supports adjustment via a mobile app, ensuring user convenience.

[0034] The AK7604 chip features an AUX input interface for receiving audio signals from external devices such as mobile phones, MP3 players, and tablets. The A7900 chip connects to it, working together to facilitate audio data communication and perform operations such as original car audio conversion and DSP conversion.

[0035] In summary, this utility model's wireless karaoke device integrates a wireless microphone, an AK7604 DSP decoding chip, an A7900 wireless communication chip, and audio conversion, audio processing, audio amplifier, and audio power amplifier modules. Together, they form a complete wireless karaoke device that supports high-definition audio decoding, wireless transmission, multi-source switching, professional tuning, and power amplification, achieving a professional upgrade to the karaoke experience. It significantly improves sound quality through high-fidelity decoding and power amplifier output, enhances karaoke convenience through wireless communication technology, meets diverse needs with intelligent tuning functions, and creates an immersive karaoke environment through sound field reshaping and ambient light rhythm.

[0036] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A wireless karaoke device, characterized in that, include: Wireless microphone, power amplifier control module, audio processing module, and feedback prevention module; The power amplifier control module integrates an AK7604 chip and an A7900 chip that are interconnected. The first communication terminal of the A7900 chip is connected to the data communication interface of the anti-feedback module; the second communication terminal of the AK7604 chip is connected to the audio processing module. The audio processing module includes: an audio conversion unit, and an audio processing unit, an audio power amplifier unit, and a first audio operational amplifier unit that are respectively communicatively connected to the audio conversion unit; The wireless microphone is connected to the anti-feedback module via a data receiver, wherein the data receiver includes at least a wireless communication terminal; It also includes: a sound effect debugging module, which integrates an encoder VOL, an encoder-end encoder BASS, and an encoder-end encoder TRE, all of which are connected to the A7900 chip.

2. The wireless karaoke device as described in claim 1, characterized in that, The A7900 chip has a switch control terminal that connects to an external ACC switch system.

3. The wireless karaoke device as described in claim 1, characterized in that, The AK7604 chip is equipped with an AUX input interface.

4. The wireless karaoke device as described in claim 1, characterized in that, The first audio operational amplifier unit integrates a 4558 first audio operational amplifier chip and an LLM837MX second audio operational amplifier chip that are interconnected.

5. The wireless karaoke device as described in claim 1, characterized in that, The audio conversion unit has a built-in CD4052 audio conversion chip, which is connected to the audio control terminal of the A7900 chip.

6. The wireless karaoke device as described in claim 1, characterized in that, The audio amplifier unit has a built-in audio amplifier chip with the chip model TDA-7850.

7. The wireless karaoke device as described in claim 1, characterized in that, The AK7604 chip is connected to the audio processing unit through several channel output interfaces.

8. The wireless karaoke device as described in claim 1, characterized in that, The audio processing module further includes a second audio operational amplifier unit, which has a built-in third audio operational amplifier chip of model LM837MX. The third audio operational amplifier chip is provided with an audio source input interface for communication and interaction with external vehicle audio sources.

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