A distributed sound box, a sound box pairing method and a distributed sound system

Abstract

The application provides a kind of distributed sound box, sound box pairing method and distributed sound system, comprising: first audio processing module, second audio processing module, playing module, wireless transmitting module, wireless receiving module and control module;Control module is used to control wireless transmitting module and wireless receiving module only one module works at the same time;Second audio processing module obtains third audio signal according to first audio signal from first audio processing module and second audio signal from wireless receiving module, and third audio signal is played out through playing module.The application provides a kind of more portable sound box equipment, each sound box is the same individual, can be used as master sound box and can be used as slave sound box, and is convenient for the combination use of multiple users.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sound box equipment, in particular to a distributed sound box, a sound box pairing method and a distributed sound system. BACKGROUND

[0002] The current scene that needs to use a high-power sound box is usually undertaken by a large high-power sound box, but the high-power sound box is heavy and not easy to carry, and some scenes are not suitable for use. For example, the square dance scene, the high-power sound box is easy to disturb the public.

[0003] Therefore, a distributed sound box layout is introduced, and multiple small sound boxes are used to undertake such scenes, and even the effect of a surround sound field can be achieved. Although each distributed sound box has small power, it can collectively play towards the center around, so that the surround sound field can achieve good volume within the range, and it is not easy to disturb the public outside the range. Moreover, one is changed into multiple, and the small sound boxes are easier to carry and can be carried by multiple people; multiple small sound boxes can be flexibly combined for use to adapt to more scenes.

[0004] The existing distributed sound box system is generally composed of a master sound box and multiple slave sound boxes. The master sound box plays an audio source, and the multiple slave sound boxes receive the signal of the master sound box and then play it out. However, such a system is very important for the master sound box. For example, if the person carrying the master sound box cannot arrive on schedule due to something, or the master sound box is faulty, the entire sound box system cannot work, resulting in the failure of the activity. SUMMARY

[0005] The purpose of the present application is to provide a distributed sound box, a sound box pairing method and a distributed sound system, which can solve the problem that the existing distributed sound box can only be used as a master sound box or a slave sound box and cannot be adaptively changed according to the environment.

[0006] The technical solutions provided by the present application are as follows:

[0007] A distributed sound box comprises: a first audio processing module, configured to process an input audio source signal to obtain a first audio signal; a second audio processing module, electrically connected with the first audio processing module and a playing module; a wireless transmitting module, electrically connected with the first audio processing module, configured to transmit the first audio signal according to a communication protocol; a wireless receiving module, electrically connected with the second audio processing module, configured to receive an air interface signal according to the communication protocol to obtain a second audio signal; the second audio processing module obtains a third audio signal according to the first audio signal and the second audio signal, and plays out the third audio signal through the playing module; and a control module, electrically connected with the wireless transmitting module and the wireless receiving module, configured to control the wireless transmitting module and the wireless receiving module to work only one at the same time.

[0008] Further, the first audio processing module comprises a plurality of interface processing units; each interface processing unit is configured to receive an audio source signal in a preset format; the first audio processing module processes various input audio source signals to obtain a first audio signal.

[0009] Further, the first audio processing module is electrically connected to the control module; the first audio processing module performs sound effect processing on the input audio source signal according to a first control signal from the control module to obtain a first audio signal.

[0010] Further, the second audio processing module is electrically connected to the control module; the second audio processing module performs sound effect processing on the third audio signal according to a second control signal from the control module; the sound effect processed third audio signal is played out through the playing module.

[0011] Further, the communication protocol followed by the wireless transmitting module and the wireless receiving module is one of WIFI, U-band and V-band.

[0012] The application further provides an audio box pairing method based on the foregoing distributed audio box, comprising: if a preset key is detected to be pressed, then the audio box to be paired is a master audio box, the master audio box switches to a preset frequency to send pairing frequency information; if the preset key is not detected to be pressed, then the audio box to be paired is a slave audio box, the slave audio box periodically switches to the preset frequency to receive the pairing frequency information; and if the pairing frequency information is acquired, then the slave audio box switches to a pairing frequency in the pairing frequency information.

[0013] The application further provides an audio box pairing method based on the foregoing distributed audio box, comprising: if a preset key is detected to be pressed, then the audio box to be paired is a slave audio box, the slave audio box scans frequency signals in a preset frequency band; and if a frequency signal reaching a preset intensity is detected, then the frequency signal is taken as a pairing frequency, and the slave audio box switches to the pairing frequency.

[0014] The application further provides an audio box pairing method based on the foregoing distributed audio box, comprising: if a preset key is detected to be pressed, then the audio box to be paired switches to a preset frequency to receive pairing frequency information; and if the pairing frequency information is not acquired, then the audio box to be paired is a master audio box, the master audio box switches to the preset frequency to send the pairing frequency information.

[0015] Further, if the pairing frequency information is acquired, then the audio box to be paired is a slave audio box, and the slave audio box switches to a pairing frequency in the pairing frequency information.

[0016] The application further provides a distributed sound system based on the distributed sound box, comprising: a plurality of distributed sound boxes; and an optional one of the sound boxes as a master sound box.

[0017] The distributed sound box, the sound box pairing method and the distributed sound system provided by the application can at least bring the following beneficial effects: the application provides a portable sound box device, a plurality of sound box devices can be used in combination, each sound box is the same individual, and can be used as a master sound box or a slave sound box, facilitating the combination use of multiple users. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above characteristics, technical features, advantages and implementation modes of the distributed sound box, the sound box pairing method and the distributed sound system will be further described in the following preferred embodiments in a clear and understandable manner in combination with the drawings.

[0019] Figure 1 is a structural schematic diagram of one embodiment of the distributed sound box of the application;

[0020] Figure 2 is a flowchart of one embodiment of the sound box pairing method of the application;

[0021] Figure 3 is a flowchart of another embodiment of the sound box pairing method of the application;

[0022] Figure 4 is a flowchart of another embodiment of the sound box pairing method of the application;

[0023] Figure 5 is a structural schematic diagram of one embodiment of the distributed sound system of the application;

[0024] Figure 6 is a system block diagram of one specific application scenario embodiment of the application.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 100. first audio processing module, 200. second audio processing module, 300. playing module, 400. control module, 500. wireless transmitting module, 600. wireless receiving module, 10. distributed sound system, 20. distributed sound box. DETAILED DESCRIPTION

[0027] In order to describe the technical solutions of the embodiments of the present application or the prior art clearly, the specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without any creative effort, and other embodiments can also be obtained.

[0028] For the sake of simplicity of the drawings, only the parts related to the present application are shown in each drawing, which do not represent the actual structure of the product. In addition, for the sake of simplicity of the drawings and easy understanding, in some drawings, only one of the parts with the same structure or function is shown schematically, or only one of them is marked. In this document, "one" not only means "only one", but also means "more than one".

[0029] One embodiment of the present application, as shown in the drawings, a distributed sound box 20, comprising: Figure 1

[0030] A first audio processing module 100, a second audio processing module 200, a playing module 300, a wireless transmitting module 500, a wireless receiving module 600 and a control module 400.

[0031] The first audio processing module 100 is configured to process an input audio source signal to obtain a first audio signal.

[0032] Optionally, the first audio processing module comprises a plurality of interface processing units; each interface processing unit is configured to receive an audio source signal in a preset format; and the first audio processing module processes various input audio source signals, such as mixing, to obtain the first audio signal.

[0033] The interface processing units include Bluetooth, a TF card slot, a 6.5mm microphone socket, a USB interface and an AUX audio cable. In this way, the input of the audio source signal in multiple ways can be supported, and the user can use it conveniently.

[0034] The second audio processing module 200 is electrically connected to the first audio processing module and the playing module. The playing module can include a power amplifier and a loudspeaker.

[0035] The wireless transmitting module 500 is electrically connected to the first audio processing module and is configured to transmit the first audio signal according to a communication protocol. The wireless receiving module 600 is electrically connected to the second audio processing module and is configured to receive an air interface signal according to the communication protocol to obtain a second audio signal. The wireless transmitting module 500 and the wireless receiving module 600 use the same communication protocol.

[0036] The second audio processing module obtains a third audio signal according to the first audio signal and the second audio signal, and plays the third audio signal through the playing module.​

[0037] The control module 400 is electrically connected with the wireless transmitting module and the wireless receiving module, and is configured to control the wireless transmitting module and the wireless receiving module to work at the same time.

[0038] In another embodiment, the first audio processing module is also electrically connected with the control module. The first audio processing module performs sound effect processing on the input sound source signal according to a first control signal from the control module to obtain a first audio signal. Since the first audio signal is sent to all the sound boxes in the distributed sound system, the sound effect adjustment of all the sound boxes can be realized by adjusting the sound effect processing of the first audio processing module in the master sound box. A special button, knob or other input mode can be arranged on the control panel of the sound box for adjusting the sound effect processing of the first audio processing module, and the control module controls the first audio processing module according to the control information from the control panel. The master sound box refers to the sound box in which the wireless transmitting module works and the wireless receiving module does not work in normal use. The slave sound box refers to the sound box in which the wireless transmitting module does not work and the wireless receiving module works in normal use.

[0039] In another embodiment, the second audio processing module is also electrically connected with the control module. The second audio processing module performs sound effect processing on the third audio signal according to a second control signal from the control module, and the third audio signal after the sound effect processing is played out by the playing module. Since the third audio signal is only played in the sound box, the sound effect adjustment of the sound box can be realized by adjusting the sound effect processing of the second audio processing module in the sound box. A special button, knob or other input mode can be arranged on the control panel of the sound box for adjusting the sound effect processing of the second audio processing module, and the control module controls the second audio processing module according to the control information from the control panel.

[0040] In another embodiment, the first audio processing module and the second audio processing module are respectively electrically connected with the control module. In this way, the sound effect adjustment of all the sound boxes and the sound effect adjustment of the sound box can be realized.

[0041] The communication protocol followed by the wireless transmitting module and the wireless receiving module can be one of WIFI, U-band and V-band.

[0042] The distributed sound box provided in the embodiment integrates the wireless transceiver module, so that each sound box can serve as a master sound box and a slave sound box. When multiple sound boxes are combined for use, the user can conveniently adjust the settings of the master sound box as needed according to the scene. By respectively controlling the sound effect processing of the first audio processing module and the second audio processing module, the user can conveniently use the sound effect adjustment of all the sound boxes or the sound effect adjustment of the sound box as needed.

[0043] In one embodiment of the present application, asFigure 2 As shown in the figure, a sound box pairing method based on the distributed sound box of the foregoing embodiment comprises:

[0044] In step S110, if the preset key is detected to be pressed, the sound box to be paired is the master sound box, and the master sound box switches to the preset frequency to send the pairing frequency information.

[0045] Specifically, when a distributed sound box is used to build a sound system, the master sound box needs to be paired with each slave sound box before formal use. The meaning of sound box pairing is that the wireless transmitting module of the master sound box works at the same frequency as the wireless receiving module of each slave sound box, which is also called the pairing frequency. Only when working at the same frequency, the master and slave sound boxes can communicate with each other, so that the master and slave sound boxes play the same audio signal.

[0046] The default working frequency of the wireless transmitting module of the master sound box and the default working frequency of the wireless receiving module of the slave sound box can be different. The working frequency of the wireless transmitting module of the master sound box in normal use can be used as the pairing frequency. The sound box pairing is to make the slave sound box obtain the pairing frequency.

[0047] When multiple sound boxes are paired within a preset distance range (such as less than 1 meter), one sound box is selected as the master sound box, and a preset key is pressed on it. The sound box detects that the preset key is pressed, and works as the master sound box, switches to the preset frequency (such as the public code) to send the pairing frequency information, which contains the pairing frequency value.

[0048] In step S120, if the preset key is not detected to be pressed, the sound box to be paired is the slave sound box, and the slave sound box periodically switches to the preset frequency to receive the pairing frequency information.

[0049] In step S130, if the pairing frequency information is obtained, the slave sound box switches to the pairing frequency in the pairing frequency information.

[0050] Specifically, if the preset key is not detected to be pressed, the slave sound box works. If the slave sound box has not completed pairing (i.e., has not obtained the pairing frequency), it periodically switches to the preset frequency to receive the pairing frequency information, such as switching to the public code every second to receive. If the pairing frequency information can be received, the pairing frequency is extracted from the pairing frequency information, and the working frequency of the wireless receiving module of the slave sound box is set to the pairing frequency.

[0051] In step S140, after completing pairing with all slave sound boxes, when the preset key is detected to be pressed again, the master sound box switches to the pairing frequency.

[0052] Specifically, after completing pairing with all slave sound boxes, the preset key of the master sound box is pressed again. The master sound box switches the working frequency of the wireless transmitting module of the master sound box to the pairing frequency when detecting that the preset key is pressed again.

[0053] In this way, the working frequencies of the master and slave sound boxes are unified, and the master and slave sound boxes can normally communicate with each other, and all slave sound boxes are connected to the master sound box.

[0054] The embodiment provides a sound box pairing mode, so that the working frequencies of the master and slave sound boxes are unified, and normal communication between the master and slave sound boxes is realized.

[0055] Another embodiment of the application is shown in Figure 3 A sound box pairing method based on the distributed sound box of the foregoing embodiment comprises the following steps:

[0056] In step S210, the master sound box transmits on the pairing frequency.

[0057] Specifically, when multiple sound boxes are paired within a preset distance range, one sound box is selected as a master sound box. The sound box as the master sound box transmits on the pairing frequency.

[0058] In step S220, if it is detected that the preset key is pressed, the sound box to be paired is a slave sound box, and the slave sound box scans frequency signals in a preset frequency band.

[0059] In step S220, if a frequency signal reaching a preset intensity is detected, the frequency signal is taken as the pairing frequency, and the slave sound box switches to the pairing frequency.

[0060] Specifically, if it is detected that the preset key is pressed, the slave sound box works. If the slave sound box has not completed pairing (i.e., has not obtained the pairing frequency), frequency sweeping is performed in the preset frequency band. Since the master sound box transmits on the pairing frequency, if a frequency signal reaching a preset intensity is detected, the frequency signal must be the pairing frequency. The slave sound box switches to the pairing frequency, so that the working frequencies of the master and slave sound boxes are unified.

[0061] The embodiment provides another sound box pairing mode, so that the working frequencies of the master and slave sound boxes are unified, and normal communication between the master and slave sound boxes is realized.

[0062] Another embodiment of the application is shown in Figure 4 A sound box pairing method based on the distributed sound box of the foregoing embodiment comprises the following steps:

[0063] In step S310, if it is detected that the preset key is pressed, the sound box to be paired switches to a preset frequency to receive pairing frequency information.

[0064] Specifically, the above two embodiments require to determine the master speaker first when the speakers are paired, and only one master speaker can be set; if multiple master speakers are set at the same time, the pairing effect is affected.

[0065] Sometimes, it is not clear whether the master speaker is set. Therefore, the system needs to automatically identify whether the master speaker is set, so that it can be more convenient to use. The present embodiment is based on this purpose.

[0066] When multiple speakers are paired within a preset distance range (such as less than 1 meter), if a speaker detects that a preset key is pressed, it switches to a preset frequency to receive pairing frequency information, which contains the pairing frequency value.

[0067] Step S320 If the pairing frequency information is not obtained, the speaker to be paired is the master speaker, and the master speaker sends the pairing frequency information on the preset frequency.

[0068] Specifically, if the pairing frequency information cannot be obtained, it means that the master speaker has not been set before, and the speaker works as the master speaker and sends the pairing frequency information on the preset frequency.

[0069] Step S330 If the pairing frequency information is obtained, the speaker to be paired is the slave speaker, and the slave speaker switches to the pairing frequency in the pairing frequency information.

[0070] Specifically, if the pairing frequency information can be obtained, it means that the master speaker has been set before, and the speaker works as the slave speaker and extracts the pairing frequency from the pairing frequency information, and sets the working frequency of the wireless receiving module of the slave speaker on the pairing frequency.

[0071] Step S340 After completing the pairing with all slave speakers, when the master speaker detects that the preset key is pressed again, the master speaker switches to the pairing frequency.

[0072] Specifically, after completing the pairing with all slave speakers, the preset key is pressed again on the master speaker. When the master speaker detects that the preset key is pressed again, the working frequency of the wireless transmitting module of the master speaker is switched to the pairing frequency.

[0073] In this way, the working frequencies of the master and slave speakers are unified.

[0074] The present embodiment provides another speaker pairing method, which can automatically identify whether the master speaker has been set, thereby simplifying the speaker pairing.

[0075] An embodiment of the present application, as shown in Figure 5 A distributed sound system 10, comprising:

[0076] Multiple distributed speakers based on the above embodiments, and optionally one of the speakers is the master speaker and the others are slave speakers.

[0077] Before normal use, the sound boxes can be paired using the sound box pairing method of the foregoing embodiments. Then, the positions of the sound boxes are set according to the environment, and the sound boxes enter the normal use state.

[0078] In normal use, if the sound effects of all the sound boxes need to be adjusted, the sound effect processing of the first audio processing module of the master sound box can be adjusted; if the sound effect of a sound box needs to be adjusted, the sound effect processing of the second audio processing module of the sound box can be adjusted.

[0079] The embodiment adopts a distributed sound box layout, and the relatively independent large sound boxes have small power and small size and are easy to carry. The multiple small sound boxes can collectively play towards the center to form a surround sound field, which can achieve good volume within the range and does not easily disturb people outside the range. Since each sound box can serve as a master sound box, the combination use of any number of users is facilitated, and more scenes can be adapted.

[0080] The application further provides a specific application embodiment of the foregoing distributed sound box, and a system block diagram of the distributed sound box is as shown in Figure 6

[0081] The distributed sound box includes a DSP, a sound effect DSP, a power amplifier, a loudspeaker, an MCU, a UHF transmitter, a receiver, and a control panel.

[0082] The DSP (digital signal processor, i.e., the first audio processing module) performs sound effect processing and sound mixing on the input audio and outputs a first audio signal; the first audio signal is sent to the UHF transmitter and the sound effect DSP. The sound effect processing herein affects all master and slave sound boxes.

[0083] The first audio processing module can support multiple ways of inputting an audio source signal, including Bluetooth (BT), a TF card slot, a 6.5 mm microphone socket, a USB interface, and an AUX audio cable.

[0084] The sound effect DSP (i.e., the second audio processing module) mixes the first audio signal and a second audio signal from the UHF receiver to obtain a third audio signal and performs sound effect processing on the third audio signal. The sound effect processing herein only affects itself (i.e., the sound box). Generally, if the sound box serves as a master sound box, the UHF receiver does not output the second audio signal; if the sound box serves as a slave sound box, there is no first audio signal; therefore, generally, the third audio signal is the first audio signal or the second audio signal; however, the sound box structure can realize the mixing of the first audio signal and the second audio signal.

[0085] ​UHF transmitter (i.e. wireless transmitting module): as the master speaker, transmitting the first audio signal on the U frequency band.

[0086] UHF receiver (i.e. wireless transmitting module): as the slave speaker, receiving the air interface signal on the U frequency band to obtain the second audio signal.

[0087] MCU (microprocessor unit, i.e. control module): used for receiving the control signal from the control panel, and controlling the UHF transceiver, the pairing between the speakers, the sound effect, etc. according to the control signal. The control panel has, but is not limited to: a button for pairing between the speakers, a sound effect adjustment knob for controlling the first audio processing module, a sound effect adjustment knob for controlling the second audio processing module, etc.

[0088] The portable distributed speaker device provided by the embodiment can be used as both the master speaker and the slave speaker, facilitating the combination of multiple speaker devices; when the master speaker fails or cannot be present for some reason, a user's speaker can be selected as the master speaker, facilitating the use of multiple users.

[0089] It should be noted that the above embodiments can be freely combined as needed. The above description is only the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should be considered as the protection scope of the present application.

Claims

1. A distributed soundbar, comprising: The application comprises: a first audio processing module for processing input sound source signals to obtain first audio signals; a second audio processing module electrically connected to the first audio processing module and a playing module; a wireless transmitting module electrically connected to the first audio processing module for transmitting first audio signals according to a communication protocol; the communication protocol is one of WIFI, U-band and V-band; a wireless receiving module electrically connected to the second audio processing module for receiving air interface signals according to the communication protocol to obtain second audio signals; a control module electrically connected to the wireless transmitting module and the wireless receiving module for controlling the wireless transmitting module and the wireless receiving module to work only one at the same time; the first audio processing module is electrically connected to the control module; the first audio processing module performs sound effect processing on input sound source signals according to a first control signal from the control module to obtain first audio signals; the second audio processing module is electrically connected to the control module; the second audio processing module obtains third audio signals according to the first audio signals and the second audio signals, and performs sound effect processing on the third audio signals according to a second control signal from the control module, and plays the sound effect processed third audio signals through the playing module; wherein, by adjusting the sound effect processing of the first audio processing module of the main sound box, the sound effect of all sound boxes is uniformly adjusted; by adjusting the sound effect processing of the second audio processing module of any sound box, the sound effect of the corresponding sound box is independently adjusted.

2. The distributed soundbar of claim 1, wherein, The first audio processing module comprises a plurality of interface processing units; each interface processing unit is used for receiving sound source signals in a preset format; the first audio processing module performs mixing and sound effect processing on various input sound source signals to obtain first audio signals.

3. The distributed soundbar of claim 1, wherein, It also comprises a control panel; the control panel is provided with a key for pairing between sound boxes, a sound effect adjustment knob for controlling the first audio processing module, and a sound effect adjustment knob for controlling the second audio processing module; the control module generates corresponding control signals according to control information from the control panel.

4. A sound box pairing method, characterized in that, The distributed sound box according to any one of claims 1-3 comprises: if it is detected that the preset key is pressed, the sound box to be paired is a main sound box, and the main sound box switches to a preset frequency to send pairing frequency information; if it is not detected that the preset key is pressed, the sound box to be paired is a slave sound box, and the slave sound box periodically switches to the preset frequency to receive the pairing frequency information; and if the pairing frequency information is acquired, the slave sound box switches to a pairing frequency in the pairing frequency information.

5. A sound box pairing method, characterized in that, The distributed sound box according to any one of claims 1-3 comprises: if it is detected that the preset key is pressed, the sound box to be paired is a slave sound box, and the slave sound box scans frequency signals in a preset frequency band; and if a frequency signal reaching a preset intensity is detected, the frequency signal is taken as a pairing frequency, and the slave sound box switches to the pairing frequency.

6. A sound box pairing method, characterized in that, The distributed sound box according to any one of claims 1-3 comprises: If the preset key is detected to be pressed, the to-be-paired sound box switches to a preset frequency to receive pairing frequency information; and if the pairing frequency information is not acquired, the to-be-paired sound box is a master sound box, and the master sound box switches to the preset frequency to send the pairing frequency information.

7. The sound box pairing method of claim 6, wherein, Also included are: If the pairing frequency information is acquired, the to-be-paired sound box is a slave sound box, and the slave sound box switches to a pairing frequency in the pairing frequency information.

8. A distributed sound system, characterized by The distributed sound box based on any one of claims 1-3, comprising: A plurality of the distributed sound boxes; Optionally, one of the sound boxes is a master sound box, and the other sound boxes are slave sound boxes.

9. The distributed sound system of claim 8, wherein, The master-slave sound boxes are paired by the sound box pairing method of claim 4 or 5 or 6 or 7. The distributed sound box based on any one of claims 1-3, comprising: A plurality of the distributed sound boxes; Optionally, one of the sound boxes is a master sound box, and the other sound boxes are slave sound boxes. The master-slave sound boxes are paired by the sound box pairing method of claim 4 or 5 or 6 or 7.

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