KB200 Android karaoke mainboard

Abstract

The utility model provides a KB200 Android karaoke main board, which comprises a processor chip, the processor chip adopts BP1064A2 of mountain scene, two power amplifier chips are arranged in the processor chip, a 200W high-power switching power supply circuit is arranged on the processor chip board, the processor chip adopts a structure of DSP audio processing, D-type power amplifier and power supply, and the processor chip is connected with the power amplifier chip through the power amplifier chip. The processor chip is provided with a switch anti-impact circuit, and the processor chip adopts a differential signal design. An integrated design is adopted, the overall process is improved, a switch anti-impact circuit is independently designed, a differential signal design is adopted, and the audio index output by the power amplifier is improved; according to the invention, the control of DSP audio processing and the sampling of external simple equipment state information are realized, the realization mechanism of anti-howling, KTV effect, original voice elimination algorithm and voice trigger key is realized based on the DSP, the processing and distribution of audio signals of voice song requesting are realized, and the Bluetooth audio playing function is realized through the DSP.

Description

Technical Field

[0001] The utility model relates to the technical field related to consumer audio products, and in particular to a KB200 Android karaoke mainboard. Background Art

[0002] With the continuous advancement of technology and the continuous improvement of living standards, people have higher and higher requirements for the real-time performance and sound quality of audio. The development of audio processing technology has provided people with an efficient transmission platform and a variety of input, processing and output methods. The use of advanced audio processing technology can reflect the characteristics of the collected object in real time, vividly and realistically. Now audio processing technology is widely used in monitoring, communication, entertainment and other aspects.

[0003] With the improvement of people's living standards and the development of storage technology, people have higher requirements for music, and high-quality lossless music is becoming more and more popular. Most of the existing car players do not have high-fidelity lossless music playback and cannot meet the needs of consumers. Existing lossless music players have down-converted or frequency-converted, and cannot restore the sound quality well, especially when singing in KTV, which requires high requirements for the motherboard design. In this regard, this solution specifically proposes the KB200 Android K song motherboard to solve the above problems. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model proposes a KB200 Android karaoke motherboard to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the technical solution of the utility model is implemented as follows: KB200 Android K song motherboard includes a processor chip, the processor chip adopts Mountain View's BP1064A2, and the processor chip contains two power amplifier chips, a 200W high-power switching power supply circuit is arranged on the processor chip board, the processor chip adopts the structure of DSP audio processing + Class D power amplifier + power supply, a power on and off anti-shock circuit is arranged on the processor chip, and the processor chip adopts a differential signal design.

[0006] Preferably, the processor chip is designed based on a UART interface and a complete set of communication protocols with the Android core board.

[0007] Preferably, control of DSP audio processing and sampling of external microphone device status information.

[0008] Preferably, anti-howling, KTV effect and original sound elimination algorithm are realized based on DSP.

[0009] Preferably, the processing and distribution of the audio signal of voice song request is realized through the implementation mechanism of the voice trigger button.

[0010] Preferably, the Bluetooth audio playback function is implemented through DSP.

[0011] The beneficial effects of the utility model are embodied in:

[0012] The utility model adopts Mountain View's BP1064A2 DSP, with reasonable pin function definition, 2 amplifier chips, 2.0 and 2.1 channel compatible design, total power output up to 150, 200W high-power switching power supply designed on the board, DSP audio processing + Class D amplifier + power supply, integrated design, improved overall process, independently designed a switch anti-shock circuit, using differential signal design to improve the audio index of the amplifier output; based on the UART interface, a complete set of communication protocols with the Android core board is designed, the control of DSP audio processing and the sampling of external voice equipment status information are realized, anti-howling, KTV effect and original sound elimination algorithm are realized based on DSP, the implementation mechanism of voice trigger button is realized, the processing and distribution of audio signals for voice song request is realized, and the Bluetooth audio playback function is realized through DSP. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the attached picture:

[0014] Figure 1 This is a schematic diagram of the chip board structure of the utility model;

[0015] Figure 2 This is the chip circuit schematic diagram of the utility model;

[0016] Figure 3 This is a circuit schematic diagram of a power amplifier chip of the utility model;

[0017] Figure 4 This is a circuit schematic diagram of the power amplifier chip 2 of the utility model.

[0018] Description of reference numerals:

[0019] 1. Processor chip; 2. Power amplifier chip; 3. High-power switching power supply circuit; 4. Switching anti-shock circuit DETAILED DESCRIPTION

[0020] The utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] It should be noted that if the utility model embodiments involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, "multiple" means more than two. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances. 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 achieve. When the combination of technical solutions is contradictory or cannot be achieved, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0023] Embodiment: The KB200 Android karaoke motherboard according to the embodiment of the utility model includes a processor chip 1, characterized in that the processor chip 1 adopts Mountain View's BP1064A2, and the processor chip 1 contains two power amplifier chips 2, a 200W high-power switching power supply circuit 3 is arranged on the processor chip 1, the processor chip 1 adopts a DSP audio processing + Class D power amplifier + power supply structure, a power on and off anti-shock circuit 4 is arranged on the processor chip 1, and the processor chip 1 adopts a differential signal design.

[0024] refer to Figure 1-Figure 4 Processor chip 1 is based on the UART interface and designs a complete set of communication protocols with the Android core board. It controls the DSP audio processing and samples the status information of the external microphone device. It realizes anti-howling, KTV effects and original sound elimination algorithms based on DSP. Through the implementation mechanism of the voice trigger button, it realizes the processing and distribution of the audio signal of voice song request, and realizes the Bluetooth audio playback function through DSP.

[0025] When in use, Mountain View's BP1064A2 is used, the pins are reasonably defined for function, two amplifier chips are used, 2.0 and 2.1 channel compatible design, the total power output is up to 150, and a 200W high-power switching power supply is designed on the board. It adopts DSP audio processing + Class D amplifier + power supply, and an integrated design improves the overall process. An independent switch anti-shock circuit is designed, and a differential signal design is adopted to improve the audio indicators of the amplifier output; based on the UART interface, a complete set of communication protocols with the Android core board is designed, which realizes the control of DSP audio processing and the sampling of external voice equipment status information, and realizes anti-howling, KTV effects and original sound elimination algorithms based on DSP, as well as the implementation mechanism of voice trigger buttons, which realizes the processing and distribution of audio signals for voice song requesting, and realizes the Bluetooth audio playback function through DSP.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. KB200 Android Karaoke motherboard, including a processor chip (1), characterized in that: The processor chip (1) adopts Mountain View's BP1064A2, and the processor chip (1) contains two power amplifier chips (2). A 200W high-power switching power supply circuit (3) is arranged on the processor chip (1). The processor chip (1) adopts a DSP audio processing + Class D power amplifier + power supply structure. A power on / off anti-shock circuit (4) is arranged on the processor chip (1). The processor chip (1) adopts a differential signal design.

2. The KB200 Android Karaoke motherboard according to claim 1, characterized in that: The processor chip (1) is designed with a complete set of communication protocols with the Android core board based on a UART interface.

3. The KB200 Android Karaoke motherboard according to claim 1, characterized in that: Control of DSP audio processing and sampling of external microphone device status information.

4. The KB200 Android Karaoke motherboard according to claim 1, characterized in that: Anti-howling, KTV effect and original sound elimination algorithm are realized based on DSP.

5. The KB200 Android Karaoke motherboard according to claim 1, characterized in that: Through the implementation mechanism of voice trigger buttons, the processing and distribution of audio signals for voice song requesting are realized.

6. The KB200 Android Karaoke motherboard according to claim 1, characterized in that: The Bluetooth audio playback function is realized through DSP.

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