Sound box with built-in wireless audio receiving module

Abstract

The utility model discloses a sound box with a built-in wireless audio receiving module, which comprises a sound box main body internally provided with a PCB (printed circuit board) mainboard and a receiving module integrated in the PCB mainboard and provided with a receiving chip, and the receiving module is connected with a processor in the PCB mainboard through a first audio transmission circuit to realize audio signal transmission; the emitter is internally provided with an ID chip capable of forming encrypted information of a paired ID, and sends a radio frequency signal with the encrypted information to the outside in a radio frequency transmission mode; when the audio input end of the transmitter is connected to the audio output port of the electronic musical instrument, and the receiving chip receives the radio frequency signal sent by the transmitter and completes verification ID matching, a one-way wireless audio transmission link from the transmitter to the receiving module is established, and the processor only processes the audio signal transmitted by the first audio transmission circuit. The problems of power supply, compatibility and equipment redundancy of the external receiver of the sound box are solved, and a user does not need to manually switch an input source.

Description

TECHNICAL FIELD

[0001] The utility model relates to musical instrument sound box technical field, specifically is a sound box of built -in wireless audio frequency receiving module. BACKGROUND

[0002] When performing outdoor singing and playing, if the audio data of the electronic musical instrument is transmitted to the sound box by wireless transmission of audio signals to realize audio playing, the traditional musical instrument sound box needs to additionally purchase a wireless receiver (such as Line 6 G10) and insert the audio input interface of the sound box to receive the audio signals transmitted by the wireless transmitter mounted on the electronic musical instrument.

[0003] However, the sound box uses the above-mentioned external wireless receiver to realize the reception of wireless audio signals, which will have the following problems in hardware support: 1) the receiver device is easy to lose or damage, increasing the use cost; 2) the receiver occupies the audio input interface, and cannot simultaneously connect other wired devices; 3) the external receiver has unstable power supply (depending on USB or battery), affecting the smoothness of the performance. At the same time, in the actual use process of the user, there are also problems such as: the operation of manually pairing the receiver and the transmitter for wireless communication connection increases the complexity of the use of the sound box, or the separation of the external receiver and the sound box leads to poor user portability experience. SUMMARY

[0004] In view of the technical defects in the background art, the utility model provides a sound box with a built-in wireless audio receiving module, which solves the above-mentioned technical problems and meets the actual needs. The specific technical scheme is as follows:

[0005] The utility model discloses a kind of sound boxes with built-in wireless audio receiving module, including the sound box main body with PCB mainboard, still include:

[0006] Receiving module is integrated in the PCB mainboard and has receiving chip, and the receiving module is connected with processor in PCB mainboard by first audio transmission circuit to realize audio signal transmission;

[0007] Transmitter is built-in ID chip that can form encrypted information of pairing ID, and sends radio frequency signal with encrypted information to outside by radio frequency transmission mode;

[0008] When the audio input end of the transmitter is connected to the audio output port of the electronic musical instrument, and the receiving chip receives the radio frequency signal sent by the transmitter and completes the verification ID matching, a one-way wireless audio transmission link from the transmitter to the receiving module is established, the processor only processes the audio signal transmitted by the first audio transmission circuit and outputs to the loudspeaker of the sound box main body for playing.

[0009] As a further embodiment of the utility model, the audio input interface is provided on the audio box body, the audio input interface is connected with the processor through the second audio transmission circuit, and the processor receives the audio signal transmitted from the first audio transmission circuit and performs physical isolation on the second audio transmission circuit.

[0010] As a further embodiment of the utility model, when the transmitter is pulled out from the audio output port of the electronic musical instrument or the wireless audio transmission link is not established, the first audio transmission circuit does not transmit the audio signal to the processor, and the processor receives the audio signal transmitted by the second audio transmission circuit.

[0011] As a further embodiment of the utility model, the receiving module is also provided with a digital audio interface, the first audio transmission circuit is a signal transmission circuit formed by the receiving module transmitting the audio signal to the processor through the digital audio interface, the processor is integrated with a DSP chip, and a power amplifier is arranged in the signal transmission circuit of the processor outputting the audio signal to the loudspeaker.

[0012] As a further embodiment of the utility model, the shell of the audio box body is provided with an indicator lamp for displaying the wireless connection state and signal strength of the transmitter and the receiving chip in real time, and the indicator lamp is electrically connected with the processor.

[0013] As a further embodiment of the utility model, the receiving module is electrically connected with the power supply device in the audio box body through an independent power supply circuit.

[0014] The utility model discloses the beneficial effect is: when using the audio box, the user does not need to receive the audio signal of external receiver after starting, and the receiving module built-in the audio box directly receives the audio signal transmitted by the transmitter connected on the electronic musical instrument in the wireless transmission form, realizes the wireless audio transmission experience of " starting to use", solves the equipment redundancy, the operation of external receiver brings complicated and compatibility problem, and when the transmitter works, the audio box will preferentially use the wireless receiving audio signal mode to receive the audio data, and the user does not need to manually switch the audio input source, and the performance fluency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the audio box use principle schematic diagram.

[0016] Figure 2 It is the connection structure schematic diagram of each component of the audio box.

[0017] In the figure, 1, the sound box main body; 11, PCB mainboard; 12, receiving module; 121, receiving chip; 122, digital audio interface; 13, first audio transmission circuit; 14, processor; 141, DSP chip; 15, loudspeaker; 16, audio input interface; 17, second audio transmission circuit; 18, power amplifier; 19, indicator light; 110, power supply circuit; 111, power supply device; 2, transmitter; 21, ID chip; 3, electronic musical instrument; 31, audio output port; 4, wireless audio transmission link. DETAILED DESCRIPTION

[0018] The utility model discloses a kind of sound boxes of built-in wireless audio receiving module, such as Figure 1 And Figure 2 Combination shows, including the sound box main body 1 that is equipped with PCB mainboard 11, still include:

[0019] Receiving module 12 is integrated in the PCB mainboard 11 and with receiving chip 121, and the receiving module 12 is connected with processor 14 in PCB mainboard 11 by first audio transmission circuit 13 to realize audio signal transmission;

[0020] Transmitter 2, ID chip 21 that can form pairing ID's encrypted information is built-in, and the radio frequency signal with encrypted information is sent to outside by radio frequency transmission mode;

[0021] When the audio input end of the transmitter 2 is connected to the audio output port 31 of electronic musical instrument 3, and the receiving chip 121 receives the radio frequency signal sent by transmitter 2 and completes verification ID matching, establish from the transmitter 2 to receiving module 12 one-way wireless audio transmission link 4, the processor 14 only processes the audio signal transmitted by first audio transmission circuit 13, and is output to the loudspeaker 15 of the sound box main body 1 and plays.

[0022] It should be noted that: the receiving module 12 is directly integrated on the PCB mainboard 11 of the sound box, the receiving module 12 monopolizes one audio input channel in the processor 14, and the receiving module 12 continuously listens to the broadcast signal after the sound box main body 1 is turned on; and the transmitter 2 is provided with a pin design and can be directly inserted into the audio output port 31 of the electronic musical instrument 3, the transmitter 2 is automatically activated after being inserted into the electronic musical instrument 3, sends a pairing request to the sound box, the receiving chip 121 in the receiving module 12 verifies the ID to establish an exclusive connection, and each sound box pre-stores a unique pairing ID when it is shipped, so that the transmitter 2 can quickly pair with the receiving module 12 to form a wireless audio transmission link 4 after being powered on, and can prevent signal crosstalk between multiple devices when multiple sound boxes are used at the same time; after the wireless audio transmission link 4 is formed, the audio signal transmitted from the audio output port 31 of the electronic musical instrument 3 to the audio input end of the transmitter 2 is transmitted to the receiving module 12 through the wireless audio transmission link 4, thereby realizing the effect of wireless audio transmission.

[0023] In addition, the sound box can realize the effect that the user does not need to externally connect a receiver to receive the audio signal after turning on, the receiving module 12 built-in the sound box directly receives the audio signal transmitted by the transmitter 2 connected to the electronic musical instrument 3 in a wireless transmission form, realizes the wireless audio transmission experience of “turning on and using”, solves the problems of device redundancy, complicated operation and compatibility caused by the external receiver, and when the transmitter 2 is working, the sound box will preferentially use the wireless receiving audio signal to receive the audio data, and the user does not need to manually switch the audio input source, thereby improving the performance of the performance.

[0024] It should be further explained that the sound box main body 1 is provided with an audio input interface 16, the audio input interface is connected with the processor 14 through the second audio transmission circuit 17, and when the processor 14 receives the audio signal transmitted from the first audio transmission circuit 13, the second audio transmission circuit 17 is physically isolated.

[0025] Among them, the traditional wired input interface (such as XLR / TRS) is still reserved on the sound box main body 1, that is, the audio input interface 16 can be used to connect the external audio input device to input the audio data, and the processor 14 will preferentially use the wireless signal as the input mode of the audio data, and can automatically shield the audio data input of the audio input interface 16, so that the sound box can support automatic switching of wired / wireless mode

[0026] Specifically, when the transmitter 2 is pulled out of the audio output port 31 of the electronic musical instrument 3 or the wireless audio transmission link 4 is not established, the first audio transmission circuit 13 does not transmit the audio signal to the processor 14, and the processor 14 receives the audio signal transmitted by the second audio transmission circuit 17.

[0027] Wherein, the user can transmit audio data to the sound box body 1 through connecting the audio input device at the audio input interface 16 without using the wireless transmission of audio data formed by the transmitter 2 and the receiving module 12, so as to realize the audio playing effect of the sound box body 1, and make the use mode of the sound box more diversified.

[0028] It needs to be further explained that the receiving module 12 is also provided with a digital audio interface 122, the first audio transmission circuit 13 is a signal transmission circuit formed by the receiving module 12 transmitting audio signals to the processor 14 through the digital audio interface 122, the processor 14 is integrated with a DSP chip 141, and the signal transmission circuit in which the processor 14 outputs audio signals to the loudspeaker 15 is provided with a power amplifier 18.

[0029] Wherein, after receiving the audio signals, the receiving chip 121 transmits the audio signals to the processor 14 through the digital audio interface 122, the DSP chip 141 processes the audio data transmitted by the first audio transmission circuit 13, and then amplifies the audio signals by the power amplifier 18 and plays them by the loudspeaker 15, so as to realize the audio playing of the sound box body 1, and the receiving chip 121 (such as Nordic nRF52840) and the DSP chip 141 (such as ADI SHARC) can be directly connected through I2S to reduce signal delay.

[0030] It needs to be further explained that the shell of the sound box body 1 is provided with an indicator light 19 for displaying the wireless connection state and signal strength of the transmitter 2 and the receiving chip 121 in real time, and the indicator light 19 is electrically connected with the processor 14.

[0031] Wherein, after the transmitter 2 and the receiving module 12 form wireless communication connection, the processor 14 controls the indicator light 19 to turn on, and the indicator light 19 can represent the wireless connection state and signal strength after the transmitter 2 and the receiving module 12 form wireless communication connection through at least one of the light flickering, light brightness or light color change, and the user can judge whether the connection state of the wireless audio transmission link 4 is normal according to the working state of the indicator light 19, so as to adjust the working state of the sound box.

[0032] It needs to be further explained that the receiving module 12 is electrically connected with the power supply device 111 in the sound box body 1 through an independent power supply circuit 110.

[0033] Wherein, the receiving module 12 adopts independent power supply circuit 110, which can conveniently isolate the other power amplifier circuit on the PCB mainboard 11 by the processor 14 when the sound box adopts the wireless audio transmission link 4 for wireless audio transmission.

[0034] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A speaker with a built-in wireless audio receiver module, comprising a speaker body with a built-in PCB motherboard, characterized in that, Also includes: The receiving module is integrated into the PCB motherboard and has a receiving chip. The receiving module is connected to the processor in the PCB motherboard through the first audio transmission circuit to realize audio signal transmission. The transmitter has a built-in ID chip that can generate encrypted information to form a pairing ID, and sends radio frequency signals with encrypted information to the outside world through radio frequency transmission. When the audio input terminal of the transmitter is connected to the audio output port of the electronic musical instrument, and the receiving chip receives the radio frequency signal sent by the transmitter and completes the verification ID matching, a one-way wireless audio transmission link is established from the transmitter to the receiving module. The processor only processes the audio signal transmitted by the first audio transmission circuit and outputs it to the speaker of the speaker body for playback.

2. The speaker according to claim 1, characterized in that, The speaker body is provided with an audio input interface, which is connected to the processor through a second audio transmission circuit. When the processor receives an audio signal transmitted from the first audio transmission circuit, it physically isolates the second audio transmission circuit.

3. The speaker according to claim 2, characterized in that, When the transmitter is unplugged from the audio output port of the electronic musical instrument or when no wireless audio transmission link is established, the first audio transmission circuit does not transmit audio signals to the processor, and the processor receives the audio signals transmitted by the second audio transmission circuit.

4. The speaker according to claim 1, characterized in that, The receiving module also has a digital audio interface. The first audio transmission circuit is a signal transmission circuit formed by the receiving module transmitting audio signals to the processor through the digital audio interface. The processor integrates a DSP chip. The signal transmission circuit in which the processor outputs audio signals to the speaker is equipped with a power amplifier.

5. The speaker according to claim 1, characterized in that, The speaker body has an indicator light for real-time display of the wireless connection status and signal strength between the transmitter and receiver chip, and the indicator light is electrically connected to the processor.

6. The speaker according to claim 1, characterized in that, The receiving module is electrically connected to the power supply device in the speaker body via an independent power supply circuit.

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