Portable karaoke device

Abstract

The utility model relates to the technical field of audio and video processing, and discloses a portable karaoke device, which comprises an audio receiving and analyzing system, an audio voice eliminating system, a UHF (Ultra High Frequency) wireless microphone receiving system, a song sound effect and sound mixing system, a power supply and man-machine interface system and an HDMI (High Definition Multimedia Interface) audio and video synthesis output. The portable karaoke equipment is composed of the audio and video receiving and separating system, the audio and human voice AI eliminating system, the UHF wireless microphone receiving system, the song sound effect and sound mixing system and the HDMI audio and video synthesizing system, and when the portable karaoke equipment is used for building a karaoke system, only a mobile phone or a computer, a television and a wired or wireless microphone need to be additionally arranged. And the sound box can be used as an optional accessory for high-power output, so that the building of a whole set of karaoke or live broadcast environment can be conveniently completed only by matching with a common television or computer, the use is more convenient and faster, and the use cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of audio and video processing, in particular to a portable karaoke device. Background Art

[0002] Traditional karaoke equipment includes computers (or disc players), amplifiers, televisions, and other devices, and requires professional accompaniment versions of many songs. This multitude of equipment makes setup and management complex, and the numerous songs can also involve copyright and membership issues, making home karaoke difficult to promote and popularize. Recently popular sound cards lack video interfaces, significantly reducing the karaoke experience.

[0003] In view of this, we propose a portable karaoke device. Utility Model Content

[0004] The purpose of the present invention is to provide a portable karaoke device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a portable karaoke device, including an audio reception and analysis system, an audio vocal elimination system, a UHF wireless microphone reception system, a song sound effect and mixing system, a power supply and human-machine interface system, and an HDMI audio and video synthesis output;

[0006] The audio reception and analysis system includes a USB screen projection chip U3, the 6th end of the USB screen projection chip U3 is electrically connected to the 1st end of the wireless chip U1, the 1st end of the wireless chip U1 is electrically connected to one end of the capacitor C1, the other end of the capacitor C1 is grounded, the 2nd end of the wireless chip U1 is electrically connected to one end of the capacitor C3, and the other end of the capacitor C3 is electrically connected to the 3rd end of the wireless chip U1.

[0007] Optionally, the UHF wireless microphone receiving system includes a silencer chip U7, terminal 34 of the silencer chip U7 is electrically connected to one end of the resistor R32, and the other end of the resistor R32 is grounded, terminal 7 of the silencer chip U7 is electrically connected to one end of the resistor R33, and the other end of the resistor R33 is grounded; terminal 29 of the silencer chip U7 is electrically connected to one end of the inductor L4, and the other end of the inductor L4 is grounded through the capacitor C51, and terminal 30 of the silencer chip U7 is electrically connected to one end of the inductor L5, and the other end of the inductor L5 is grounded through the capacitor C52.

[0008] Optionally, the UHF wireless microphone receiving system includes two groups of wireless microphone chips U9, the 15 end of one group of wireless microphone chips U9 is electrically connected to the AVD033 end, the 9 end of the wireless microphone chip U9 is electrically connected to the SCL end, the AVD033 end is electrically connected to the 29 end, the 30 end and the 32 end of the other group of wireless microphone chips U9 through resistors, the AVD033 end is electrically connected to the 5 end of the current regulator U11, the 1 end of the current regulator U11 is electrically connected to the VCC4V end, the VCC4V end is electrically connected to the 1 end of the current regulator U12, and the 5 end of the current regulator U12 is electrically connected to the 56ML0VDD end.

[0009] Optionally, the song sound effect and mixing system includes a digital audio processor chip U8, terminal 16 of the digital audio processor chip U8 is electrically connected to the MIC_BIAS terminal, terminal 29 of the digital audio processor chip U8 is electrically connected to one end of the inductor L6, and the other end of the inductor L6 is grounded through capacitor C65, terminal 30 of the digital audio processor chip U8 is electrically connected to one end of the inductor L7, and the other end of the inductor L7 is grounded through capacitor C66, terminal 31 of the digital audio processor chip U8 is electrically connected to the VDD3V3 terminal, terminal 1 of the digital audio processor chip U8 is electrically connected to one end of the resistor R36, and the other end of the resistor R36 is electrically connected to the PCB_ANT terminal, terminal 35 of the digital audio processor chip U8 is electrically connected to the negative pole of the indicator light D2, the positive pole of the indicator light D2 is electrically connected to one end of the resistor R41, and the other end of the resistor R41 is grounded.

[0010] Optionally, the power supply and human-machine interface system includes a type connector J1, the B7 end of the type connector J1 is electrically connected to the USBCM end, the B6 end of the type connector J1 is electrically connected to the USBCP end, the B5 end of the type connector J1 is electrically connected to one end of the resistor R7, and the other end of the resistor R7 is electrically connected to the 4 end of the type connector J1.

[0011] Optionally, the HDMI audio and video synthesis output includes an audio and video chip U16, the 48 end of the audio and video chip U16 is electrically connected to the V33 end, the 19 end of the audio and video chip U16 is electrically connected to one end of the resistor R99, the other end of the resistor R99 is grounded, the 17 end of the audio and video chip U16 is electrically connected to one end of the resistor R100, and the other end of the resistor R100 is grounded.

[0012] Compared with the prior art, the present invention provides a portable karaoke device with the following beneficial effects:

[0013] This portable karaoke device is composed of an audio and video receiving and separation system, an audio and voice AI elimination system, a UHF wireless microphone receiving system, a song sound effect and mixing system, and an HDMI audio and video synthesis system. To build a karaoke system using this device, you only need to add a mobile phone or computer, a TV, and a wired or wireless microphone. The speaker can be used as an optional accessory with high-power output, so you only need to pair it with a common TV or computer to easily complete the construction of a complete karaoke or live broadcast environment. It is more convenient and quick to use, and the cost of use is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a circuit diagram of the audio and video receiving and separation system of the utility model;

[0015] Figure 2 This is a circuit diagram of the audio voice elimination system of the utility model;

[0016] Figure 3 This is a circuit diagram of the UHF wireless microphone receiving system of the utility model;

[0017] Figure 4 This is a circuit diagram of the song sound effects and mixing system of the utility model;

[0018] Figure 5 This is a circuit diagram of the power supply and human-machine interface system of the utility model;

[0019] Figure 6 This is a circuit diagram of the HDMI audio and video synthesis output system of the utility model. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figures 1-6 As shown, the utility model provides a technical solution: a portable karaoke device, including an audio reception and analysis system, an audio voice elimination system, a UHF wireless microphone reception system, a song sound effect and mixing system, a power supply and human-machine interface system, and an HDMI audio and video synthesis output;

[0022] like Figure 1As shown, the audio reception and analysis system includes a USB screen projection chip U3. Terminal 6 of the USB screen projection chip U3 is electrically connected to terminal 1 of the wireless chip U1. Terminal 1 of the wireless chip U1 is electrically connected to one end of the capacitor C1. The other end of the capacitor C1 is grounded. Terminal 2 of the wireless chip U1 is electrically connected to one end of the capacitor C3. The other end of the capacitor C3 is electrically connected to terminal 3 of the wireless chip U1. The model of the USB screen projection chip U3 is MS9121. It is implemented using MS9121. Its front end is connected to a PC or mobile phone through a USB interface. The driver on the PC or mobile phone virtualizes a screen and collects the information on this screen and sends it to the MS9121. The MS9121 separates the received screen information into audio and video and sends them through the VGA and IIS interfaces respectively.

[0023] like Figure 2 As shown, the UHF wireless microphone receiving system includes a noise cancellation chip U7, terminal 34 of the noise cancellation chip U7 is electrically connected to one end of a resistor R32, the other end of the resistor R32 is grounded, terminal 7 of the noise cancellation chip U7 is electrically connected to one end of a resistor R33, the other end of the resistor R33 is grounded; terminal 29 of the noise cancellation chip U7 is electrically connected to one end of an inductor L4, the other end of the inductor L4 is grounded via a capacitor C51, terminal 30 of the noise cancellation chip U7 is electrically connected to one end of an inductor L5, the other end of the inductor L5 is grounded via a capacitor C52;

[0024] The noise cancellation chip U7, model PTN1118, runs a DTTNet network model to separate human voices. This deep learning-based sound separation model uses a CNN deep learning model to extract the temporal and spectral features of the input audio. This model consists of an encoder + separator + decoder network structure. The original mixed audio data is first fed into the encoder, which encodes the waveform data. The encoded result is then fed into the separator for separation. The separator outputs a human voice mask, which is then multiplied by the encoder output of the original mixed audio to obtain the separation result. This separation result is then fed into the decoder module, which restores the separation result to audio waveform data. The noise cancellation chip U7 receives the IIS audio stream from the USB projection chip U3 as raw audio data and feeds it into the DTTNet network model. This model removes the human voice component from the audio stream according to the user-defined level and re-emitted it through another IIS interface.

[0025] like Figure 3As shown, the UHF wireless microphone receiving system includes two groups of wireless microphone chips U9, the 15th terminal of one group of wireless microphone chips U9 is electrically connected to the AVD033 terminal, the 9th terminal of the wireless microphone chip U9 is electrically connected to the SCL terminal, the AVD033 terminal is electrically connected to the 29th terminal, the 30th terminal and the 32nd terminal of the other group of wireless microphone chips U9 through resistors, the AVD033 terminal is electrically connected to the 5th terminal of the current regulator U11, the 1st terminal of the current regulator U11 is electrically connected to the VCC4V terminal, the VCC4V terminal is electrically connected to the 1st terminal of the current regulator U12, and the 5th terminal of the current regulator U12 is electrically connected to the 56M L0VDD terminal.

[0026] The wireless microphone chip U9 is model KT0656M. The KT0656M is a wireless audio receiver that receives performance signals from a wireless microphone and converts them into an IIS audio stream for output. In addition to the audio channel, it also establishes a digital auxiliary control channel to receive control commands from the wireless microphone, enabling remote control of the device via the wireless microphone.

[0027] like Figure 4 As shown, the song sound effect and mixing system includes a digital audio processor chip U8, terminal 16 of the digital audio processor chip U8 is electrically connected to the MIC_BIAS terminal, terminal 29 of the digital audio processor chip U8 is electrically connected to one end of the inductor L6, and the other end of the inductor L6 is grounded through the capacitor C65, terminal 30 of the digital audio processor chip U8 is electrically connected to one end of the inductor L7, and the other end of the inductor L7 is grounded through the capacitor C66, terminal 31 of the digital audio processor chip U8 is electrically connected to the VDD3V3 terminal, terminal 1 of the digital audio processor chip U8 is electrically connected to one end of the resistor R36, and the other end of the resistor R36 is electrically connected to the PCB_ANT terminal, terminal 35 of the digital audio processor chip U8 is electrically connected to the negative pole of the indicator light D2, the positive pole of the indicator light D2 is electrically connected to one end of the resistor R41, and the other end of the resistor R41 is grounded.

[0028] The digital audio processor chip U8, a PTN1011, receives the IIS audio streams from the PTN1011 and the KV0656M. It then mixes the two streams, applying various effects such as reverb, ducking, voice change, and EQ, as configured, and outputs the mix through the IIS2 interface. The digital audio processor chip U8 not only hosts the audio effects algorithms but also serves as the device's master controller. It communicates with the KT0656M and PTN1118 via the IIS interface, configuring and controlling the other two chips. Control commands received by the KT0656M from the wireless microphone are also sent to the SOC via the IIC. The SOC decodes the commands and responds, enabling remote, real-time control of the device.

[0029] like Figure 5As shown, the power supply and human-machine interface system includes a type connector J1, the B7 end of the type connector J1 is electrically connected to the USBCM end, the B6 end of the type connector J1 is electrically connected to the USBCP end, the B5 end of the type connector J1 is electrically connected to one end of the resistor R7, and the other end of the resistor R7 is electrically connected to the 4 end of the type connector J1.

[0030] like Figure 6 As shown, the HDMI audio and video composite output includes an audio and video chip U16. Terminal 48 of the audio and video chip U16 is electrically connected to terminal V33. Terminal 19 of the audio and video chip U16 is electrically connected to one end of resistor R99, the other end of which is grounded. Terminal 17 of the audio and video chip U16 is electrically connected to one end of resistor R100, the other end of which is grounded. The audio and video chip U16 receives the IIS audio stream from the PTN1011 and the video stream from the MS9121, combines them, and converts them into an HDMI signal, which is then output to the television for display. This achieves the final audio and video output.

[0031] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A portable karaoke device, characterized by: Including audio reception and analysis system, audio voice elimination system, UHF wireless microphone reception system, song sound effect and mixing system, power supply and human-machine interface system, HDMI audio and video synthesis output; The audio reception and analysis system includes a USB screen projection chip U3, the 6th end of the USB screen projection chip U3 is electrically connected to the 1st end of the wireless chip U1, the 1st end of the wireless chip U1 is electrically connected to one end of the capacitor C1, the other end of the capacitor C1 is grounded, the 2nd end of the wireless chip U1 is electrically connected to one end of the capacitor C3, and the other end of the capacitor C3 is electrically connected to the 3rd end of the wireless chip U1.

2. The portable karaoke device according to claim 1, characterized in that: The UHF wireless microphone receiving system includes a silencer chip U7, the 34th end of the silencer chip U7 is electrically connected to one end of the resistor R32, the other end of the resistor R32 is grounded, the 7th end of the silencer chip U7 is electrically connected to one end of the resistor R33, and the other end of the resistor R33 is grounded; the 29th end of the silencer chip U7 is electrically connected to one end of the inductor L4, the other end of the inductor L4 is grounded through the capacitor C51, the 30th end of the silencer chip U7 is electrically connected to one end of the inductor L5, and the other end of the inductor L5 is grounded through the capacitor C52.

3. The portable karaoke device according to claim 1, characterized in that: The UHF wireless microphone receiving system includes two groups of wireless microphone chips U9, the 15 end of one group of wireless microphone chips U9 is electrically connected to the AVD033 end, the 9 end of the wireless microphone chip U9 is electrically connected to the SCL end, the AVD033 end is electrically connected to the 29 end, the 30 end and the 32 end of the other group of wireless microphone chips U9 through resistors, the AVD033 end is electrically connected to the 5 end of the current regulator U11, the 1 end of the current regulator U11 is electrically connected to the VCC4V end, the VCC4V end is electrically connected to the 1 end of the current regulator U12, and the 5 end of the current regulator U12 is electrically connected to the 56M L0VDD end.

4. The portable karaoke device according to claim 1, characterized in that: The song sound effect and mixing system includes a digital audio processor chip U8, the 16th terminal of the digital audio processor chip U8 is electrically connected to the MIC_BIAS terminal, the 29th terminal of the digital audio processor chip U8 is electrically connected to one end of the inductor L6, and the other end of the inductor L6 is grounded through the capacitor C65, the 30th terminal of the digital audio processor chip U8 is electrically connected to one end of the inductor L7, and the other end of the inductor L7 is grounded through the capacitor C66, the 31st terminal of the digital audio processor chip U8 is electrically connected to the VDD3V3 terminal, the 1st terminal of the digital audio processor chip U8 is electrically connected to one end of the resistor R36, and the other end of the resistor R36 is electrically connected to the PCB_ANT terminal, the 35th terminal of the digital audio processor chip U8 is electrically connected to the negative pole of the indicator light D2, the positive pole of the indicator light D2 is electrically connected to one end of the resistor R41, and the other end of the resistor R41 is grounded.

5. The portable karaoke device according to claim 1, characterized in that: The power supply and human-machine interface system includes a type connector J1, the B7 end of the type connector J1 is electrically connected to the USBCM end, the B6 end of the type connector J1 is electrically connected to the USBCP end, the B5 end of the type connector J1 is electrically connected to one end of the resistor R7, and the other end of the resistor R7 is electrically connected to the 4 end of the type connector J1.

6. The portable karaoke device according to claim 1, characterized in that: The HDMI audio and video synthesis output includes an audio and video chip U16, the 48 end of the audio and video chip U16 is electrically connected to the V33 end, the 19 end of the audio and video chip U16 is electrically connected to one end of the resistor R99, the other end of the resistor R99 is grounded, the 17 end of the audio and video chip U16 is electrically connected to one end of the resistor R100, and the other end of the resistor R100 is grounded.

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