Horizontal digital guitar amplifier

Abstract

The utility model relates to audio equipment technical field, specifically disclose a horizontal digital guitar sound box, including the shell, be provided with PCB circuit board and a plurality of loudspeaker with PCB circuit board electric connection in the shell, PCB circuit board includes audio signal input module, audio signal output module, digital audio processing module, UI control module, energy storage module, bluetooth module and loudspeaker module, bluetooth module is connected with digital audio processing module, UI control module and energy storage module electrically respectively, digital audio processing module is connected with audio signal input module and audio signal output module electrically respectively, audio signal output module is connected with loudspeaker module electrically. The utility model discloses through increasing setting bluetooth module as control host to handle various audio parameters, and with the mobile phone terminal establishes bluetooth communication connection to realize interconnection, has simplified the connection between the effecter and the sound box, reduced use cost, it is also more convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of audio equipment technology, and in particular to a horizontal digital guitar amplifier. Background Technology

[0002] A speaker enclosure is a device that converts audio signals into sound. Simply put, it refers to an enclosure with a built-in power amplifier that amplifies the audio signal before it is reproduced by the enclosure itself, making the sound louder. The speaker enclosure is the terminal of the entire audio system; its function is to convert audio electrical energy into corresponding sound energy and radiate it into space. With societal development, more and more people are practicing electric guitar. Traditional electric guitars do not have built-in enclosures; users need to use an enclosure to hear the sound. However, the sound of an electric guitar is relatively simple and cannot meet the needs of daily practice and performance. Therefore, almost all electric guitar users use guitar effects pedals. Guitar effects pedals can process the guitar sound, making it richer. The connection method is that the electric guitar is connected to the guitar effects pedal via wired or wireless connection, and the guitar effects pedal is connected to the enclosure via wired or wireless connection.

[0003] Currently, some electric guitar amplifiers on the market, in addition to amplifying the sound, also have some sound effects processed through simple analog circuits. However, for most users, this is far from enough. The amplifiers have limited built-in effects, cannot be expanded, and cannot connect with current smartphones. Therefore, we can see that most practitioners will buy various guitar effects pedals to use with them, resulting in high operating costs. Moreover, various guitar effects pedals have requirements for connection order and cables, making them very inconvenient for beginners to operate. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a horizontal digital guitar amplifier that addresses the above-mentioned deficiencies of the prior art. By adding a Bluetooth module as the control host to process various audio parameters input by the UI control module, and establishing a Bluetooth communication connection with the mobile terminal to achieve interconnection, the connection between the effects unit and the amplifier is simplified, the cost of use is reduced, and the operation is more convenient.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A horizontal digital guitar amplifier includes a housing, within which a PCB circuit board and a plurality of speakers electrically connected to the PCB circuit board are disposed. The PCB circuit board includes an audio signal input module, an audio signal output module, a digital audio processing module, a UI control module, an energy storage module, a Bluetooth module, and a speaker module. The Bluetooth module is electrically connected to the digital audio processing module, the UI control module, and the energy storage module, respectively. The digital audio processing module is electrically connected to the audio signal input module and the audio signal output module, respectively. The audio signal output module is electrically connected to the speaker module.

[0007] Preferably, the Bluetooth module includes a Bluetooth chip U11, an antenna ANT1, and a crystal oscillator X2, and both the antenna ANT1 and the crystal oscillator X2 are connected to the Bluetooth chip U11.

[0008] Preferably, the digital audio processing module includes a DSP control chip U9, the audio signal input module includes an audio signal input interface CN6 and an analog-to-digital converter circuit connected to the audio signal input interface CN6, the audio signal output module includes an audio signal output interface CN6 and a digital-to-analog converter circuit connected to the audio signal output interface CN6, and the DSP control chip U9 is connected to the Bluetooth chip U11, the analog-to-digital converter circuit, and the digital-to-analog converter circuit respectively.

[0009] Preferably, the UI control module includes buttons S1, K1, K2, K3 and a knob W1, all of which are connected to the Bluetooth chip U11.

[0010] Preferably, the energy storage module includes a Type-C interface CN1, a voltage regulator chip U5, a main control power supply chip U6, a charging control chip U4, a battery interface CN2, and a power supply battery. The battery interface CN2 is connected to the charging control chip U4 and the power supply battery, and the charging control chip U4 is connected to the Type-C interface CN1, the voltage regulator chip U5, the main control power supply chip U6, and the Bluetooth chip U11.

[0011] Preferably, the speaker module includes a power amplifier IC chip U16, a power amplifier IC chip U17, and a speaker interface J1. The power amplifier IC chip U16 and the power amplifier IC chip U17 are respectively connected to the audio signal output interface CN6 and the speaker interface J1, and the speaker interface J1 is connected to the speaker.

[0012] By adopting the above technical solution, the horizontal digital guitar amplifier provided by this utility model has the following beneficial effects: The Bluetooth module in the horizontal digital guitar amplifier is electrically connected to the digital audio processing module, the UI control module, and the energy storage module respectively. The digital audio processing module is electrically connected to the audio signal input module and the audio signal output module respectively. The audio signal output module is electrically connected to the speaker module. By adding a Bluetooth module as a control host to process various audio parameters input by the UI control module and establishing a Bluetooth communication connection with the mobile terminal to achieve interconnection, the connection between the effects pedal and the amplifier is simplified. There is no need to purchase various guitar effects pedals separately for use, reducing the cost of use and making operation more convenient, greatly facilitating the user. Attached Figure Description

[0013] Figure 1 This is an exploded view of the present invention;

[0014] Figure 2 This is a perspective view of the present utility model;

[0015] Figure 3 This is a circuit diagram of the audio signal input module in this utility model;

[0016] Figure 4 This is a circuit diagram of the audio signal output module in this utility model;

[0017] Figure 5 This is a circuit schematic diagram of the digital audio processing module in this utility model;

[0018] Figure 6 This is a circuit schematic diagram of the UI control module in this utility model;

[0019] Figure 7 This is a circuit diagram of the energy storage module in this utility model;

[0020] Figure 8 This is a circuit diagram of the Bluetooth module in this utility model;

[0021] Figure 9 This is a circuit diagram of the speaker module in this utility model;

[0022] Figure 10 This is a structural principle block diagram of the PCB circuit board in this utility model;

[0023] In the diagram, 1-outer shell, 2-PCB circuit board, 3-speaker, 4-display screen, 5-face cover, 6-base plate, 7-power supply battery. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] like Figure 1-8 As shown, the horizontal digital guitar amplifier includes a housing 1. Inside the housing 1 is a PCB circuit board 2 and several speakers 3 electrically connected to the PCB circuit board 2. The PCB circuit board 2 includes an audio signal input module, an audio signal output module, a digital audio processing module, a UI control module, a power storage module, a Bluetooth module, and a speaker module. The Bluetooth module is electrically connected to the digital audio processing module, the UI control module, and the power storage module. The digital audio processing module is electrically connected to the audio signal input module and the audio signal output module. The audio signal output module is electrically connected to the speaker module. The housing 1 also features a display screen 4 and a front cover 5. The display screen 4 is an LCD color screen. A base plate 6 is installed at the bottom of the housing 1. A protective mesh is installed on the speaker. All the modules are on the same plane, which maintains an angle of less than 90° with the horizontal plane, i.e., a horizontal design. The angle or height can be finely adjusted according to specific design needs.

[0028] Specifically, the Bluetooth module includes a Bluetooth chip U11, an antenna ANT1, and a crystal oscillator X2, both of which are connected to the Bluetooth chip U11. The Bluetooth chip U11 uses a BP1048B1 chip as the main control MCU, with a crystal oscillator frequency of 24MHz, Bluetooth connectivity at a frequency of 2.4GHz, an antenna gain of 0dB, and external circuitry for pedal, button control, LCD display, and LED indicators. It communicates with the digital audio processing module via SPI and serial ports. This Bluetooth module acts as the control host for the speaker, processing parameters from various UI control modules and the APP, communicating with the slave digital audio processing module, and outputting the speaker's real-time status and data to the display module.

[0029] Specifically, the digital audio processing module includes a DSP control chip U9, the audio signal input module includes an audio signal input interface CN6 and an analog-to-digital converter circuit connected to the audio signal input interface CN6, the audio signal output module includes an audio signal output interface CN6 and a digital-to-analog converter circuit connected to the audio signal output interface CN6, the DSP control chip U9 is connected to the Bluetooth chip U11, the analog-to-digital converter circuit and the digital-to-analog converter circuit respectively; the analog-to-digital converter circuit includes operational amplifiers U13-A and U13-B and their peripheral circuits, or a general analog-to-digital converter can be used; the digital-to-analog converter circuit includes operational amplifiers U15-A, U15-B, and U15-C and their peripheral circuits, or a general digital-to-analog converter can be used. Understandably, the DSP control chip U9 uses the AP5868 chip, with an external audio input / output port and a crystal oscillator frequency of 12MHz. The audio signal input module converts analog audio signals into digital signals, which are then transmitted to the digital audio processing module via the IIS interface. The audio signal output module converts digital signals back into analog audio signals, which can be played directly through the speaker module or output to the next-level audio device via the "OUT" interface and headphone jack. The digital audio processing module is mainly used to process digital signals and run various sound effect processing modules on them. This module communicates with the Bluetooth module via a serial port, forming a master-slave structure. In this invention, the Bluetooth module is the master and the digital audio processing module is the slave.

[0030] Specifically, the UI control module includes buttons S1, K1, K2, K3, and knob W1, all of which are connected to the Bluetooth chip U11. Understandably, this UI control module is primarily used to adjust various parameters of the Bluetooth module and the digital audio processing module. It includes a volume knob, parameter adjustment knob, global button, drum machine button, Bluetooth button, back button, foot pedal / pedal interface, reset button, and a mobile app control interface. The mobile app can work in conjunction with the aforementioned buttons and knobs to adjust various parameters of the device.

[0031] Specifically, the energy storage module includes a Type-C interface CN1, a voltage regulator chip U5, a main control power supply chip U6, a charging control chip U4, a battery interface CN2, and a power supply battery 7. The battery interface CN2 is connected to the charging control chip U4 and the power supply battery, and the charging control chip U4 is connected to the Type-C interface CN1, the voltage regulator chip U5, the main control power supply chip U6, and the Bluetooth chip U11. Understandably, the voltage regulator chip U5 uses a TPS562201 / SOT23-6 chip with an output voltage of 3.6V, powering the Bluetooth chip U11. The main control power supply chip U6 uses an ME6211C33M5G-N chip with a voltage of 3.3V, powering the DSP control chip U9. The charging control chip U4 uses an SB6286 chip. The power supply battery 7 is a lithium polymer battery with a full charge voltage of 8.4V / 2000mAh. The energy storage module also includes a USB interface. The USB input power is boosted to 13V by the charging control chip U4 and supplied to the aforementioned chips. The TYPE-C interface and USB interface are the power charging input terminals and are used for communication with devices such as PCs. It can be used as a charging port or to connect to mobile phones and computers, and can also be used as a digital sound card.

[0032] Specifically, the speaker module includes power amplifier IC chip U16, power amplifier IC chip U17, and speaker interface J1. Power amplifier IC chip U16 and power amplifier IC chip U17 are respectively connected to audio signal output interface CN6 and speaker interface J1, and speaker interface J1 is connected to the speaker. It is understood that the power amplifier IC chip U16 uses a CS8631E chip to provide output gain for the speaker (i.e., speaker 3); the speaker 3 is used to convert analog audio signals into sound signals.

[0033] Understandably, this utility model has a reasonable design and unique structure. By adding a Bluetooth module as the control host to process various audio parameters accessed by the UI control module and establishing a Bluetooth communication connection with the mobile terminal to achieve interconnection, it simplifies the connection between effects pedals and amplifiers, eliminates the need to purchase various guitar effects pedals for use, reduces usage costs, and makes operation more convenient, greatly facilitating user use.

[0034] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A horizontal digital guitar amplifier, comprising a housing, wherein a PCB circuit board and a plurality of speakers electrically connected to the PCB circuit board are disposed within the housing, characterized in that: The PCB circuit board includes an audio signal input module, an audio signal output module, a digital audio processing module, a UI control module, an energy storage module, a Bluetooth module, and a speaker module. The Bluetooth module is electrically connected to the digital audio processing module, the UI control module, and the energy storage module. The digital audio processing module is electrically connected to the audio signal input module and the audio signal output module. The audio signal output module is electrically connected to the speaker module.

2. The horizontal digital guitar amplifier according to claim 1, characterized in that: The Bluetooth module includes a Bluetooth chip U11, an antenna ANT1, and a crystal oscillator X2, both of which are connected to the Bluetooth chip U11.

3. The horizontal digital guitar amplifier according to claim 2, characterized in that: The digital audio processing module includes a DSP control chip U9, the audio signal input module includes an audio signal input interface CN6 and an analog-to-digital converter circuit connected to the audio signal input interface CN6, the audio signal output module includes an audio signal output interface CN6 and a digital-to-analog converter circuit connected to the audio signal output interface CN6, and the DSP control chip U9 is connected to the Bluetooth chip U11, the analog-to-digital converter circuit, and the digital-to-analog converter circuit.

4. The horizontal digital guitar amplifier according to claim 2, characterized in that: The UI control module includes buttons S1, K1, K2, K3 and a knob W1, all of which are connected to the Bluetooth chip U11.

5. The horizontal digital guitar amplifier according to claim 2, characterized in that: The energy storage module includes a Type-C interface CN1, a voltage regulator chip U5, a main control power supply chip U6, a charging control chip U4, a battery interface CN2, and a power supply battery. The battery interface CN2 is connected to the charging control chip U4 and the power supply battery, and the charging control chip U4 is connected to the Type-C interface CN1, the voltage regulator chip U5, the main control power supply chip U6, and the Bluetooth chip U11.

6. The horizontal digital guitar amplifier according to claim 3, characterized in that: The speaker module includes a power amplifier IC chip U16, a power amplifier IC chip U17, and a speaker interface J1. The power amplifier IC chip U16 and the power amplifier IC chip U17 are respectively connected to the audio signal output interface CN6 and the speaker interface J1, and the speaker interface J1 is connected to the speaker.

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