CN220457541U - Live broadcast system of analog and digital modes for mobile loudspeaker box - Google Patents
Live broadcast system of analog and digital modes for mobile loudspeaker box Download PDFInfo
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- CN220457541U CN220457541U CN202320885676.8U CN202320885676U CN220457541U CN 220457541 U CN220457541 U CN 220457541U CN 202320885676 U CN202320885676 U CN 202320885676U CN 220457541 U CN220457541 U CN 220457541U
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Abstract
The live broadcast system of analog and digital modes for mobile sound box includes signal input device, analog-digital converter, processor and output device, the described signal input device is connected with analog-digital converter, the described analog-digital converter is connected with processor, the output device comprises a front-stage output part and an external amplifier, the external amplifier comprises a power amplifier and a loudspeaker, the front-stage output part comprises an analog live broadcast end, the processor is provided with a digital live broadcast end, the processor is connected with the power amplifier, and the processor is connected with the analog live broadcast end. After the digital signal processing is completed through the processor, the corresponding different signals are transmitted to the power amplifier and the front-stage output part through the analog live broadcast end and the digital live broadcast end, the power amplifier, the earphone and the user equipment are used for converting the signals, so that the signal conversion times are reduced, the signal loss is reduced, the number of independent elements is also reduced, the complexity of the system is reduced, the weight of the loudspeaker box is reduced, and the loudspeaker box is convenient to maintain and carry.
Description
Technical Field
The utility model relates to the technical field of sound box live broadcast systems, in particular to a live broadcast system in an analog mode and a digital mode for a mobile sound box.
Background
In recent years, live broadcast industry is popular, and becomes a way of social, marketing and entertainment, outdoor live broadcast is a branch in the live broadcast industry, and at least one mobile phone is required for the equipment of the outdoor live broadcast, in the case of live objects including network viewers and live viewers, a mobile speaker is also included to amplify the live speaker's voice and facilitate movement. When the mobile phone and the mobile sound box are used for direct broadcast, the burden of the mobile phone is much smaller, the mobile phone is responsible for transmitting the shot picture to a network by combining the audio of the sound box, and the shot picture can be transmitted by combining the acquired on-site audio to carry out embellishment; the sound box is connected with the microphone and is responsible for collecting the sound of a live player, the sound box is connected with a musical instrument or playing equipment to play the soundtrack, the sound box is connected with the mobile phone, and the sound and/or the soundtrack of the live player are processed and mixed and then output to the loudspeaker and the mobile phone.
Some sounds supporting analog live broadcasting and digital live broadcasting are available in the market, such as the sounds disclosed in the patent application number CN201821607185.2, the sound mixer is arranged behind the DSP digital signal processor, the analog signals output by the DSP are received, the independent hardware sound mixer outputs as analog signals, in order to live broadcast and upload data, the live broadcast sound card converts analog signals into digital signals, the signals are more in conversion, the signal transmission loss degree is increased, and an independent sound mixer and a sound card are used, so that independent elements in the sound box are increased, the connection complexity is improved, and the design is unreasonable.
Disclosure of Invention
In order to overcome the above disadvantages of the prior art, the present utility model is directed to an analog and digital live broadcast system for a mobile speaker.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a live broadcast system of analog and digital mode for mobile loudspeaker box, its characterized in that includes signal input unit, analog-to-digital converter, treater and follower, signal input unit and analog-to-digital converter are connected, analog-to-digital converter and treater are connected, the follower includes preceding stage output part and amplifier, the amplifier includes power amplifier and speaker, preceding stage output part includes the live end of simulation, the digital live end is installed to the treater, treater and power amplifier are connected, treater and the live end of simulation are connected.
As a further improvement of the utility model: the digital-to-analog converter and the processor are in signal transmission through I2S, the processor and the power amplifier are in signal transmission through I2S, the processor and the front-stage output part are in signal transmission through I2S, and the processor and the digital live broadcast end are in signal transmission through PCM. I2S is a bus standard established for the transmission of audio data between digital audio devices, and by separating the data from the clock signal, distortion induced by time differences is avoided. In the utility model, the analog-digital converter and the processor, the processor and the power amplifier, and the processor and the front-stage output part mutually transmit digital signals, and I2S is suitable for use.
As a further improvement of the utility model: the front-stage output part also comprises an earphone output end, and the processor is connected with the earphone output end. The live broadcast player can receive the same digital signal by using the earphone and live broadcast, and listen and check the audio, thereby having the function of checking whether the live broadcast audio has abnormality in the live broadcast process.
As a further improvement of the utility model: the processor comprises a volume regulator, an equalizer, an effector, a noise gate and a frequency divider. The volume adjuster may be used to adjust the magnitude of the corresponding volume attribute of each signal separately. The equalizer is used for correcting amplitude frequency characteristics and phase frequency characteristics of the transmission signal. The equalizer can also prevent howling by applying a frequency equalization method, specifically, when feedback self excitation occurs in an acoustic amplification system, the frequency is only a pure tone fixed on a certain point, and a trap with a very narrow frequency band is used for cutting off the frequency, so that the howling of the system can be restrained. The equalizer can also assist in eliminating human voice, and the principle of eliminating human voice is as follows: the track of the voice is evenly mixed into the song accompaniment, the acoustic wave form of the voice is the same or similar in two sound channels of the song, the voice in the stereo song is eliminated by adopting a method of subtracting the two sound channels, the bass of the frequency band below 400Hz in the song is sometimes lost, the bass part of the music is also eliminated when the voice is eliminated, and therefore, the bass can be compensated by using an equalizer to assist in eliminating the voice. The effect is for a level. The noise gate is used to reduce ambient noise. The frequency divider is used for distinguishing sound signals in different frequency bands.
As a further improvement of the utility model: the signal input device comprises an analog microphone input end, a musical instrument input end and a digital microphone input end. The analog microphone input end is used for being connected with a microphone to input analog signals, the instrument input end is used for being connected with instrument input analog signals such as guitar, and the digital microphone input end is used for being connected with a digital microphone to input digital signals.
As a further improvement of the utility model: the simulated microphone input end comprises a simulated wired microphone end and a simulated wireless microphone end. The analog wired microphone end can be a wired microphone interface, the analog wireless microphone end can be a U-section signal transceiver, and the connection wire can be reduced by connecting the analog wireless microphone end, so that live broadcasting is facilitated.
As a further improvement of the utility model: the front-stage output part also comprises an AUX input end, and the AUX input end is connected with the analog-to-digital converter. The AUX input is for accessing a music player to input an audio signal.
As a further improvement of the utility model: the signal input device, the analog-to-digital converter, the processor and the output device are all fixedly connected to the sound box. The fixed connection comprises connection through a connecting piece, welding and connection through an adhesive, and the connecting piece comprises a connecting plate, a fastening piece and a pin shaft.
Compared with the prior art, the utility model has the beneficial effects that:
1. after the digital signal processing is completed through the processor, the corresponding different signals are transmitted to the power amplifier and the front-stage output part through the analog live broadcast end and the digital live broadcast end, the power amplifier, the earphone and the user equipment are used for converting the signals, so that the signal conversion times are reduced, the signal loss is reduced, the number of independent elements is also reduced, the complexity of the system is reduced, the weight of the loudspeaker box is reduced, and the loudspeaker box is convenient to maintain and carry.
2. Compared with the system which is accessed into the system after converting the digital signal into the analog signal in the market, the utility model can directly input the digital signal received by the input end of the digital microphone into the system, has less signal conversion times and low signal loss rate.
3. The system can not only receive the analog signals transmitted by the input end of the analog microphone, but also receive the digital signals transmitted by the input end of the digital microphone, and has good compatibility and less use limit.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic circuit diagram of a signal input device.
Fig. 3 is a schematic circuit diagram of an analog-to-digital converter.
Fig. 4 is a schematic circuit diagram of a processor.
Fig. 5 is a schematic circuit diagram of the front stage output section.
FIG. 6 is a flow chart of processing signals in a processor
Description of the drawings: 1. a signal input device; 2. an analog-to-digital converter; 3. a processor; 4. and an output device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It is noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present utility model and in the foregoing figures, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
The utility model will now be further described with reference to the accompanying drawings and examples:
detailed description of the utility model:
the analog and digital live broadcast system for the mobile sound box is shown in fig. 1 to 6, and is characterized by comprising a signal input device 1, an analog-digital converter 2, a processor 3 and an output device 4, wherein the signal input device 1 is connected with the analog-digital converter 2, the analog-digital converter 2 is connected with the processor 3, the output device 4 comprises a front-stage output part and an external amplifier, the external amplifier comprises a power amplifier and a loudspeaker, the front-stage output part comprises an analog live broadcast end, the processor 3 is provided with a digital live broadcast end, the processor 3 is connected with the power amplifier, and the processor 3 is connected with the analog live broadcast end.
Further, the analog live terminal may be a wired device interface, and the digital live terminal may be an OTG interface.
Further, the signal input unit 1 transmits an analog signal to the analog-to-digital converter 2, the analog-to-digital converter 2 converts the analog signal into a digital signal and transmits the digital signal to the processor 3, and the signal input unit 1 transmits a digital signal to the analog-to-digital converter 2, and the analog-to-digital converter 2 directly transmits the digital signal to the processor 3.
Further, signal transmission is performed between the analog-to-digital converter 2 and the processor 3 through I2S, signal transmission is performed between the processor 3 and the power amplifier through I2S, signal transmission is performed between the processor 3 and the front-stage output part through I2S, and signal transmission is performed between the processor 3 and the digital live broadcast terminal through PCM. I2S is a bus standard established for the transmission of audio data between digital audio devices, and by separating the data from the clock signal, distortion induced by time differences is avoided. In the present utility model, the analog-digital converter 2 and the processor 3, the processor 3 and the power amplifier, and the processor 3 and the front-stage output part all transmit digital signals, and I2S is suitable for use.
Further, the front-stage output part further comprises an earphone output end, and the processor 3 is connected with the earphone output end. The live broadcast player can receive the same digital signal by using the earphone and live broadcast, and listen and check the audio, thereby having the function of checking whether the live broadcast audio has abnormality in the live broadcast process.
Further, the processor 3 includes a volume adjuster, an equalizer, an effector, a noise gate and a frequency divider. The volume adjuster may be used to adjust the magnitude of the corresponding volume attribute of each signal separately. The equalizer is used for correcting amplitude frequency characteristics and phase frequency characteristics of the transmission signal. The equalizer can also prevent howling by applying a frequency equalization method, specifically, when feedback self excitation occurs in an acoustic amplification system, the frequency is only a pure tone fixed on a certain point, and a trap with a very narrow frequency band is used for cutting off the frequency, so that the howling of the system can be restrained. The equalizer can also assist in eliminating human voice, and the principle of eliminating human voice is as follows: the track of the voice is evenly mixed into the song accompaniment, the acoustic wave form of the voice is the same or similar in two sound channels of the song, the voice in the stereo song is eliminated by adopting a method of subtracting the two sound channels, the bass of the frequency band below 400Hz in the song is sometimes lost, the bass part of the music is also eliminated when the voice is eliminated, and therefore, the bass can be compensated by using an equalizer to assist in eliminating the voice. The effect is for a level. The noise gate is used to reduce ambient noise. The frequency divider is used for distinguishing sound signals in different frequency bands.
Further, the signal input unit 1 includes an analog microphone input terminal, a musical instrument input terminal, and a digital microphone input terminal. The analog microphone input end is used for being connected with a microphone to input analog signals, the instrument input end is used for being connected with instrument input analog signals such as guitar, and the digital microphone input end is used for being connected with a digital microphone to input digital signals.
Further, the analog microphone input end comprises an analog wired microphone end and an analog wireless microphone end. The analog wired microphone end can be a wired microphone interface, the analog wireless microphone end can be a U-section signal transceiver, and the connection wire can be reduced by connecting the analog wireless microphone end, so that live broadcasting is facilitated.
The pre-stage output part further comprises an AUX input end, and the AUX input end is connected with the analog-to-digital converter 2. The AUX input is for accessing a music player to input an audio signal.
Further, the signal input unit 11, the analog-to-digital converter 22, the processor 33 and the output unit 44 are fixedly connected to the sound box. The fixed connection comprises connection through a connecting piece, welding and connection through an adhesive, and the connecting piece comprises a connecting plate, a fastening piece and a pin shaft.
Further, except for the fixed connection, the other connections are all electrical connections.
Implementation case:
the utility model provides a live broadcast system of analog and digital mode for mobile loudspeaker box, its characterized in that includes signal input unit 1, analog-to-digital converter 2, treater 3 and output 4, signal input unit 1 and analog-to-digital converter 2 electricity are connected, analog-to-digital converter 2 and treater 3 electricity are connected, output 4 includes preceding output part and outer amplifier, outer amplifier includes power amplifier and speaker, preceding output part includes analog live broadcast end, earphone output and AUX input, analog live broadcast end is the wired equipment interface, the digital live broadcast end is installed to treater 3, contain volume regulator, equalizer, effector, noise gate and frequency divider on the treater 3, the digital live broadcast end is the OTG interface, treater 3 and power amplifier are connected, treater 3 and analog end electricity are connected, signal transmission is carried out through I2S between treater 3 and the power amplifier through I2S, signal transmission is carried out between treater 3 and the AUS, microphone 3 and microphone input through I2 and microphone input end, microphone 3 and microphone input through input 3 input through digital input 1, microphone input 3 and digital input 4 are connected, microphone 3 and digital input through digital input 3 input end, microphone input is connected.
Further defined in this embodiment, the connecting piece includes a connecting plate, a fastener, and a pin shaft.
The main functions of the utility model are as follows:
1. after the digital signal processing is completed through the processor, the corresponding different signals are transmitted to the power amplifier and the front-stage output part through the analog live broadcast end and the digital live broadcast end, the power amplifier, the earphone and the user equipment are used for converting the signals, so that the signal conversion times are reduced, the signal loss is reduced, the number of independent elements is also reduced, the complexity of the system is reduced, the weight of the loudspeaker box is reduced, and the loudspeaker box is convenient to maintain and carry.
2. Compared with the system which is accessed into the system after converting the digital signal into the analog signal in the market, the utility model can directly input the digital signal received by the input end of the digital microphone into the system, has less signal conversion times and low signal loss rate.
3. The system can not only receive the analog signals transmitted by the input end of the analog microphone, but also receive the digital signals transmitted by the input end of the digital microphone, and has good compatibility and less use limit.
In view of the above, after reading the present document, those skilled in the art should make various other corresponding changes without creative mental effort according to the technical scheme and the technical conception of the present utility model, which are all within the scope of the present utility model.
Claims (8)
1. The utility model provides a live broadcast system of analog and digital mode for mobile loudspeaker box, its characterized in that includes signal input unit, analog-to-digital converter, treater and follower, signal input unit and analog-to-digital converter are connected, analog-to-digital converter and treater are connected, the follower includes preceding stage output part and amplifier, the amplifier includes power amplifier and speaker, preceding stage output part includes the live end of simulation, the digital live end is installed to the treater, treater and power amplifier are connected, treater and the live end of simulation are connected.
2. The system according to claim 1, wherein the analog-digital converter and the processor are in signal transmission through I2S, the processor and the power amplifier are in signal transmission through I2S, the processor and the front-stage output part are in signal transmission through I2S, and the processor and the digital live terminal are in signal transmission through PCM.
3. The system of claim 1, wherein the front-end output unit further comprises an earphone output, and the processor is connected to the earphone output.
4. An analog, digital, direct broadcast system for mobile speakers according to claim 1, wherein the processor includes a volume adjuster, equalizer, effector, noise gate, and divider.
5. An analog, digital live broadcast system for a mobile loudspeaker according to claim 1, wherein the signal input includes an analog microphone input, a musical instrument input, and a digital microphone input.
6. An analog, digital live broadcast system for a mobile loudspeaker in accordance with claim 5 wherein the analog microphone input comprises an analog wired microphone terminal and an analog wireless microphone terminal.
7. The analog and digital live broadcast system for a mobile speaker of claim 1, wherein the front-end output further comprises an AUX input, the AUX input coupled to the analog-to-digital converter.
8. An analog and digital live broadcast system for a mobile loudspeaker according to any one of claims 1 to 7, wherein the signal input, analog to digital converter, processor and output are fixedly connected to the loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320885676.8U CN220457541U (en) | 2023-04-19 | 2023-04-19 | Live broadcast system of analog and digital modes for mobile loudspeaker box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320885676.8U CN220457541U (en) | 2023-04-19 | 2023-04-19 | Live broadcast system of analog and digital modes for mobile loudspeaker box |
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| CN220457541U true CN220457541U (en) | 2024-02-06 |
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| CN202320885676.8U Active CN220457541U (en) | 2023-04-19 | 2023-04-19 | Live broadcast system of analog and digital modes for mobile loudspeaker box |
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| CN (1) | CN220457541U (en) |
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Address after: Floor 1-6, Building 1, Guangdong Tianpu Electrical Appliance Co., Ltd., No. 19 Chuangxing 6th Road, High tech Industrial Development Zone, Henghe Street, Qingcheng District, Qingyuan City, Guangdong Province, 511500 Patentee after: Guangdong Tianpu Technology Group Co.,Ltd. Country or region after: China Address before: 510000 No.8, Jintian Road, Jintian Industrial Zone, Huadong Town, Huadu District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU TIANPU ELECTRICAL EQUIPMENT Co.,Ltd. Country or region before: China |
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