CN215835555U - Sound box main machine, slave machine sound box and wireless sound system - Google Patents

Sound box main machine, slave machine sound box and wireless sound system Download PDF

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Publication number
CN215835555U
CN215835555U CN202122065966.1U CN202122065966U CN215835555U CN 215835555 U CN215835555 U CN 215835555U CN 202122065966 U CN202122065966 U CN 202122065966U CN 215835555 U CN215835555 U CN 215835555U
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audio
module
loudspeaker
radio frequency
unit
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CN202122065966.1U
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薛明岳
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Zhuhai Huge Ic Co ltd
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Zhuhai Huge Ic Co ltd
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Abstract

The embodiment of the application discloses a sound box host computer, from quick-witted audio amplifier and wireless sound system, relates to the stereo set field. The utility model provides a speaker host computer and each have 802.11ah module from built-in of machine audio amplifier, can communicate based on 802.11ah agreement between the two, because speaker host computer and each are followed the work of machine audio amplifier in the SUBG frequency channel, have that transmission distance is far away, the advantage that the wall-through ability is strong, solved the restriction that the wireless audio amplifier of current 2.4G frequency channel was put apart from and the position in the use scene, promoted the use portability of audio amplifier greatly.

Description

Sound box main machine, slave machine sound box and wireless sound system
Technical Field
The utility model relates to the field of sound equipment, in particular to a sound box main machine, a slave machine sound box and a wireless sound system.
Background
The traditional sound box is divided into a wired sound box and a wireless sound box, when the wired sound box is deployed, wiring of the sound box needs to be reserved, construction complexity is high, and wiring is complicated; the wired sound box generally transmits audio signals by a bluetooth protocol or a WiFi protocol, and cannot meet the performance requirements of remote transmission and wall penetration due to the limitation of a protocol frequency band and the limitation of obstacles in an indoor environment.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides WIFI equipment, and the problem that the transmission distance of a wireless sound box is short in the related art can be solved. The technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a sound box main unit, including:
the system comprises a radio frequency antenna, an 802.11ah module, a power management unit and an audio coding unit;
the audio coding unit is connected with the 802.11ah module, the power management unit is respectively connected with the audio coding unit and the 802.11ah module, and an antenna end of the 802.11ah module is connected with the radio frequency antenna;
the power management unit provides working voltage for the audio coding unit and the 802.11ah module respectively, the audio coding unit is used for obtaining audio signals, carrying out audio coding on the audio signals to obtain digital audio signals, sending the digital audio signals to the 802.11ah module, and the 802.11ah module modulates the digital audio signals to obtain radio frequency signals and radiates the radio frequency signals out through the radio frequency antenna.
In a second aspect, the present application provides a slave loudspeaker box, comprising:
the device comprises a radio frequency antenna, an 802.11ah module, an audio decoding unit, a power management unit, an audio power amplifier and a loudspeaker;
the antenna end of the 802.11ah module is connected with the radio frequency antenna; the output power end of the power management unit is respectively connected with the 802.11ah module, the audio decoding unit and the audio power amplifier; the audio decoding unit is respectively connected with the 802.11ah module and the audio power amplifier; the audio power amplifier is connected with the loudspeaker;
the power management unit provides working voltage for the 802.11ah module, the audio decoding unit and the audio power amplifier respectively; the 802.11ah module receives a radio frequency signal from the sound box host through the radio frequency antenna, demodulates the radio frequency signal into a digital baseband signal, and sends the digital baseband signal to the audio decoding unit; the audio decoding unit decodes the digital baseband signal into an analog audio signal and sends the analog audio signal to an audio power amplifier; and the audio power amplifier amplifies the analog audio signal, and drives the loudspeaker to make sound by using the amplified analog audio signal.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise:
the voice box main machine and each slave voice box are internally provided with an 802.11ah module, communication can be carried out between the voice box main machine and each slave voice box based on an 802.11ah protocol, and the voice box main machine and each slave voice box work in an SUBG frequency band, so that the voice box main machine and each slave voice box have the advantages of long transmission distance and high wall penetrating capability, the limitation of distance and position arrangement of the existing wireless voice box with a 2.4G frequency band in a use scene is solved, and the use portability of the voice box is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a block diagram of a wireless sound system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a main speaker unit according to the present invention;
fig. 3 is a schematic structural diagram of the slave loudspeaker box provided by the utility model.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a schematic structural diagram of a wireless audio system according to an embodiment of the present invention is shown, where the wireless audio system includes: the loudspeaker box comprises a loudspeaker box main machine 0 and at least one auxiliary loudspeaker box 1-n, wherein n is an integer greater than or equal to 1.
The system comprises a sound box main machine 0, slave sound boxes, a sound box main machine 0, slave sound boxes, a loudspeaker main machine and a loudspeaker, wherein the sound box main machine 0 is internally provided with an 802.11ah supporting 802.11ah module, each slave sound box is also internally provided with a WiFi module supporting 802.11ah protocol, the sound box main machine 0 is used as an AP, each slave sound box is used as an STA, the sound box main machine 0 and each slave sound box are connected through the WiFi of the 802.11ah protocol, then a radio frequency signal obtained by processing according to an obtained audio signal is sent to each slave sound box through the WiFi connection, and the slave sound boxes drive the loudspeaker to make sound after decoding and amplifying processing according to a received video signal.
Referring to fig. 2, for a schematic structural diagram of the sound box host provided in the embodiment of the present application, the sound box host includes: the audio encoding device comprises an audio encoding unit 11, an 802.11ah module 12, a power management unit 13 and a radio frequency antenna 14.
The connection relation of the components is as follows: two power output ends of the power management unit 13 are respectively connected with a power input end of the audio coding unit 11 and a power input end of the 802.11ah module; the data end of the audio encoding unit 11 is connected with the data end of the 802.11ah module 12, the antenna end of the 802.11ah module 12 is connected with the radio frequency antenna 14, the number of the radio frequency antenna 14 can be one or more, and when a plurality of radio frequency antennas 14 are arranged, the sound box host supports the MIMO transmission mode. Further, the audio amplifier host computer of this application can supply power or built-in battery power through external power source, when supplying power through built-in battery, the battery can be 18650 batteries.
The operating principle of the sound box main machine of the embodiment is as follows: the power management unit 13 obtains an input voltage through a power input terminal, converts the input voltage into two output voltages, and provides the two output voltages to the audio encoding unit 11 and the 802.11ah module 12, for example: the power management unit 13 converts the 5V or 12V input voltage into two 3.3V output voltages, respectively, to supply power to the 802.11ah module and the audio encoding unit 11. The audio encoding unit 11 obtains an audio signal, where the audio signal may come from a microphone, an external storage device (for example, a TF card or a USB memory), or a bluetooth audio device, and performs encoding processing on the audio signal to obtain a digital audio signal, where the digital audio signal is a baseband signal, and then sends the digital audio signal to the 802.11ah module 12; the 802.11ah module 12 modulates the digital audio signal into a radio frequency signal based on the specification of the 802.11ah protocol, and then sends the radio frequency signal to the slave loudspeaker box with the WiFi connection established through the radio frequency antenna 14.
In one or more possible embodiments, the speaker host 0 is further provided with a memory interface, a microphone interface, and a bluetooth module. The external storage device can be inserted into the memory interface, and the audio encoding unit 11 acquires the audio file stored in the storage device and decodes the audio file to obtain a digital audio signal; the sound box host 0 can establish Bluetooth connection with the Bluetooth audio equipment through the Bluetooth module, and receive volume signals from the Bluetooth audio equipment through the Bluetooth connection; the microphone is connected with the audio encoding unit 11 through a microphone interface, and the audio encoding unit 11 acquires an audio signal collected by the microphone.
In one or more possible embodiments, the audio encoding unit 11 and the 802.11ah module 12 are connected via an IIS (integrated Interface of sound)), an SPI (Serial Peripheral Interface), an SDIO (Secure Digital Input and Output), or a USB (Universal Serial Bus) Interface.
Referring to fig. 3, for a schematic structural diagram of the slave loudspeaker box provided in the embodiment of the present application, the slave loudspeaker box 2 includes: the system comprises a radio frequency antenna 25, an 802.11ah module 21, an audio decoding unit 22, a power management unit 23, an audio power amplifier 24 and a loudspeaker 26.
Wherein, the connection relation of the above-mentioned parts is: the antenna end of the 802.11ah module 21 is connected with the radio frequency antenna 25; the output power terminals of the power management unit 23 are respectively connected with the input power terminals of the 802.11ah module 21, the audio decoding unit 22 and the audio power amplifier 24; the input data end of the audio decoding unit 22 is connected with the 802.11ah module 21, and the output data end of the audio decoding unit 22 is connected with the audio power amplifier 24; the output of the audio power amplifier 24 is connected to a speaker 26. Furthermore, the slave loudspeaker box can be powered by an external power supply or a built-in battery, and when the power is supplied by the built-in battery, the battery can be a 18650 battery pack.
The working principle of the slave loudspeaker box of the application is as follows: the power management unit 23 provides working voltages for the 802.11ah module 21, the audio decoding unit 22 and the audio power amplifier 24 respectively; the 802.11ah module 21 receives the radio frequency signal from the sound box host 0 through the radio frequency antenna 25, demodulates the radio frequency signal into a digital baseband signal, and sends the digital baseband signal to the audio decoding unit; the audio decoding unit 22 decodes the digital baseband signal into an analog audio signal, and sends the analog audio signal to the audio power amplifier 24; the audio power amplifier 24 amplifies the analog audio signal, and drives the speaker 26 to emit sound using the amplified analog audio signal.
In one or more possible embodiments, the 802.11ah module 21 and the audio decoding unit 22 are connected via an IIS, SDIO, USB or SPI interface.
In one or more possible embodiments, the power management unit 23 converts the input voltage into three working voltages, which respectively provide 3.3V working voltage for the 802.11ah module 21 and the audio decoding unit 22, and 5V working voltage for the audio power amplifier 24.
In one or more possible embodiments, the number of speakers 26 is multiple, and the multiple speakers include a tweeter, a woofer, and an intermediate-frequency speaker to improve the layering and realism of sound playback.
Wherein, the audio amplifier host computer of this application and each are followed the work of audio amplifier at the SUBG frequency channel, have that transmission distance is far away, wear the advantage that the wall ability is strong, have solved the restriction that distance and position put on the use scene of the wireless audio amplifier of current 2.4G frequency channel, have promoted the use portability of audio amplifier greatly.
The sound box host and the slave sound box provided by the embodiment of the application can comprise the following components: a casing for accommodating various components, a display screen, an input device (such as a keyboard or a touch screen), and the like.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims (9)

1. A sound box host is characterized in that: the method comprises the following steps:
the system comprises a radio frequency antenna, an 802.11ah module, a power management unit and an audio coding unit;
the audio coding unit is connected with the 802.11ah module, the power management unit is respectively connected with the audio coding unit and the 802.11ah module, and an antenna end of the 802.11ah module is connected with the radio frequency antenna;
the power management unit provides working voltage for the audio coding unit and the 802.11ah module respectively, the audio coding unit is used for obtaining audio signals, carrying out audio coding on the audio signals to obtain digital audio signals, sending the digital audio signals to the 802.11ah module, and the 802.11ah module modulates the digital audio signals to obtain radio frequency signals and radiates the radio frequency signals out through the radio frequency antenna.
2. A loudspeaker box main body according to claim 1, wherein said loudspeaker box main body is further provided with a memory interface, a microphone interface and a bluetooth module, said audio signal is obtained from a memory inserted into said memory interface, or from said bluetooth module, or from a microphone through said microphone interface.
3. The main loudspeaker box body according to claim 1 or 2, wherein the audio coding unit is connected with the 802.11ah module through an IIS, SPI, SDIO or USB interface.
4. The loudspeaker box host machine according to claim 1, wherein the loudspeaker box host machine is powered by an external power supply, and the power management unit converts an externally input 5V or 12V dc voltage into two paths of 3.3V working voltages, which respectively power the audio encoding unit and the 802.11ah unit.
5. A slave loudspeaker, comprising:
the device comprises a radio frequency antenna, an 802.11ah module, an audio decoding unit, a power management unit, an audio power amplifier and a loudspeaker;
the antenna end of the 802.11ah module is connected with the radio frequency antenna; the output power end of the power management unit is respectively connected with the 802.11ah module, the audio decoding unit and the audio power amplifier; the audio decoding unit is respectively connected with the 802.11ah module and the audio power amplifier; the audio power amplifier is connected with the loudspeaker;
the power management unit provides working voltage for the 802.11ah module, the audio decoding unit and the audio power amplifier respectively; the 802.11ah module receives a radio frequency signal from the sound box host through the radio frequency antenna, demodulates the radio frequency signal into a digital baseband signal, and sends the digital baseband signal to the audio decoding unit; the audio decoding unit decodes the digital baseband signal into an analog audio signal and sends the analog audio signal to an audio power amplifier; and the audio power amplifier amplifies the analog audio signal, and drives the loudspeaker to make sound by using the amplified analog audio signal.
6. The slave loudspeaker of claim 5, wherein the 802.11ah module and the audio decoding unit are connected via an IIS, SDIO, USB or SPI interface.
7. The slave loudspeaker of claim 5 or 6, wherein the power management unit provides 3.3V operating voltage for the 802.11ah module and the audio decoding unit, and 5V operating voltage for the audio power amplifier.
8. The slave loudspeaker box of claim 7, wherein the number of loudspeakers is a plurality, and the plurality of loudspeakers comprises a high frequency loudspeaker, a low frequency loudspeaker and a medium frequency loudspeaker.
9. A wireless sound system, characterized by comprising a sound box main machine according to any one of claims 1 to 4 and at least one sound slave machine according to any one of claims 5 to 8.
CN202122065966.1U 2021-08-30 2021-08-30 Sound box main machine, slave machine sound box and wireless sound system Active CN215835555U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122065966.1U CN215835555U (en) 2021-08-30 2021-08-30 Sound box main machine, slave machine sound box and wireless sound system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122065966.1U CN215835555U (en) 2021-08-30 2021-08-30 Sound box main machine, slave machine sound box and wireless sound system

Publications (1)

Publication Number Publication Date
CN215835555U true CN215835555U (en) 2022-02-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122065966.1U Active CN215835555U (en) 2021-08-30 2021-08-30 Sound box main machine, slave machine sound box and wireless sound system

Country Status (1)

Country Link
CN (1) CN215835555U (en)

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