CN111343526B

CN111343526B - Wireless communication method of sound box assembly and sound box assembly for wireless communication

Info

Publication number: CN111343526B
Application number: CN202010417037.XA
Authority: CN
Inventors: 童伟峰; 张亮
Original assignee: Heng Xuan Technology Beijing Co ltd
Current assignee: Heng Xuan Technology Beijing Co ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-08-11
Anticipated expiration: 2040-05-18
Also published as: CN111343526A

Abstract

The present disclosure relates to a wireless communication method of a speaker assembly and a speaker assembly for wireless communication. In the speaker assembly, the first speaker is configured to: receiving audio data from the smart device via the first wireless connection; transmitting the related communication parameters of the first wireless connection to each second loudspeaker box so that each second loudspeaker box can listen; the received audio data is forwarded to at least one second loudspeaker via a second wireless connection. Each second speaker is configured to: the communication quality parameter of the listening wireless connection is determined by listening. A given enclosure of the first enclosure and the at least one second enclosure is configured to: and determining a second sound box to switch with the first sound box based on the determined communication quality parameters of the listening wireless connections. So can in time switch over the function of each audio amplifier according to the wireless connection's of smart machine and each audio amplifier situation to make seamless uninterrupted reception audio data of each audio amplifier, discontinuous and the card when reducing each audio amplifier broadcast audio frequency is pause.

Description

Wireless communication method of sound box assembly and sound box assembly for wireless communication

Technical Field

The present disclosure relates to the field of wireless communication, and more particularly, to a speaker assembly for wireless communication and a wireless communication method of the speaker assembly.

Background

With the pursuit of people for wireless life, audio equipment such as wireless earphones, wireless sound boxes and the like enters common families. Not only do smart devices (such as smart phones, personal computers, laptops, wearable smart devices, etc.) get rid of the wire tie with audio devices (headphones or speakers, etc.), but also tend to get rid of the wire tie between multiple audio devices (left and right ears of headphones or multiple speakers) to achieve true wireless connectivity and communication.

In addition, loudspeaker systems have also evolved from mono, stereo to four channel surround, 4.1 channels, 5.1 channels, 7.1 channels, etc., relying on the scheduling and coordination of loudspeaker components including multiple loudspeakers.

In the existing wireless communication network of the speaker system, there is a difficulty in trying to connect the smart device to multiple speakers of a speaker assembly. To solve this problem, one of the sound boxes is usually set as a master sound box and the other sound boxes are set as slave sound boxes: the smart device establishes a wireless connection only with the master loudspeaker, the master loudspeaker wirelessly obtains audio data from the smart device, and forwards the audio data to the respective slave loudspeaker devices via the wireless connection, for example using a broadcast format or an Asynchronous Connectionless (ACL) link. If the data is forwarded in a broadcast mode, the forwarded data is prone to errors, music received from a loudspeaker box is prone to being jammed, and the robustness and the reliability of the forwarding mode are poor. If the wireless connection between the master speaker and the slave speakers is an asynchronous connection-less (ACL) link, on one hand, the time delay is large, and on the other hand, if there are two or more slave speakers, multiple links are required, so that the communication is susceptible to interference, and the robustness and reliability are poor.

Further, when a multiple enclosure assembly is used, the smart device may only be able to attach to a portion of the enclosures if the multiple enclosures are spaced further apart, such as in different rooms. In particular, portable smart devices (e.g., wearable smart devices, cell phones, etc.) frequently move with the movement of the user, and thus change position relative to each speaker, which may break the wireless connection with the main speaker, and the audio played by the plurality of speakers may be intermittent or jerky.

Disclosure of Invention

The present disclosure is provided to solve the above-mentioned problems occurring in the prior art.

There is a need for a speaker assembly and communication method thereof that can switch the functions of each speaker in time according to the wireless connection status between the smart device and each speaker, so that each speaker receives audio data in a seamless and uninterrupted manner, and reduces interruptions and stutter when each speaker plays audio.

According to a first aspect of the present disclosure, an acoustic enclosure assembly is provided, the acoustic enclosure assembly comprising a first acoustic enclosure and at least one second acoustic enclosure. The first speaker is configured to: receiving audio data from the smart device via the first wireless connection; transmitting the communication parameters associated with the first wireless connection to each second loudspeaker so that each second loudspeaker can listen to the first wireless connection; forwarding the received audio data to the at least one second loudspeaker via a second wireless connection. Each second speaker is configured to: and determining a communication quality parameter of the intercepted wireless connection between the second loudspeaker box and the intelligent device by intercepting the first wireless connection. Wherein a designated loudspeaker of the first loudspeaker and the at least one second loudspeaker is configured to: determining one second sound box to switch with the first sound box based on the determined communication quality parameters of the intercepted wireless connection between each second sound box and the intelligent equipment.

According to a second aspect of the present disclosure, there is provided a communication method of an enclosure assembly, the enclosure assembly comprising a first enclosure and at least one second enclosure, the first enclosure configured to: receiving audio data from the smart device via the first wireless connection; forwarding the received audio data to the at least one second loudspeaker via a second wireless connection. The communication method comprises the following steps: transmitting, by the first loudspeaker, the relevant communication parameters of the first wireless connection to each second loudspeaker; intercepting, by each second loudspeaker, the first wireless connection using the associated communication parameters to determine communication quality parameters of the intercepted wireless connection; and determining one second loudspeaker box to be switched with the first loudspeaker box based on the communication quality parameters of the intercepted wireless connection of each second loudspeaker box.

By using the loudspeaker box assembly and the communication method thereof according to the embodiments of the present disclosure, the functions (used as a master loudspeaker box or a slave loudspeaker box) of the respective loudspeaker boxes can be switched in time according to the comparison relationship between the condition of the first wireless connection between the smart device and the first loudspeaker box and the condition of the listening wireless connection between the smart device and the respective second loudspeaker boxes, so that the respective loudspeaker boxes receive audio data in a seamless and uninterrupted manner, and the interruption and pause conditions of the respective loudspeaker boxes when playing audio are reduced.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments generally by way of example and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

Fig. 1 shows a schematic diagram of communication transmission of a speaker assembly and a smart device according to an embodiment of the present disclosure.

FIG. 2 shows a flow diagram of a first example of a process of determining whether to switch a first enclosure and determining a second enclosure to switch to the first enclosure, according to an embodiment of the disclosure.

FIG. 3 shows a flow diagram of a second example of a process of determining whether to switch a first enclosure and determining a second enclosure to switch to the first enclosure, according to an embodiment of the disclosure.

FIG. 4 shows a timing diagram of a process flow for a second enclosure to switch with a first enclosure in accordance with an embodiment of the disclosure.

Fig. 5 shows a timing diagram of a coordination process flow for the first loudspeaker before and after switching the first loudspeaker according to an embodiment of the disclosure.

Fig. 6 shows a configuration diagram of an enclosure assembly for playing 5.1 channels according to an embodiment of the present disclosure.

Fig. 7 shows a flow chart of a communication method of a loudspeaker assembly according to an embodiment of the disclosure.

Detailed Description

For a better understanding of the technical aspects of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings. Embodiments of the present disclosure are described in further detail below with reference to the figures and the detailed description, but the present disclosure is not limited thereto. The order in which the various steps described herein are described as examples should not be construed as a limitation if there is no requirement for a context relationship between each other, and one skilled in the art would know that sequential adjustments may be made without destroying the logical relationship between each other, rendering the overall process impractical.

Fig. 1 shows a schematic diagram of communication transmission of

speaker assemblies

101 and 102 with smart device 100 according to an embodiment of the present disclosure. As shown in fig. 1, the enclosure assembly includes a first enclosure 101 and at least one second enclosure 102, and although 4 second enclosures 102 are shown, the number may vary as desired. The smart device 100 includes, but is not limited to, a cell phone, a wearable smart device, a tablet, a laptop, a personal digital assistant, and the like. First loudspeaker 101 may be configured to: the communication parameters associated with the first wireless connection 103 between each second loudspeaker 102 and the smart device 100 are transmitted 105 to each second loudspeaker 102, so that each second loudspeaker 102 can masquerade as a first loudspeaker 101 to listen to the first wireless connection 103 without being perceived by the smart device 100. First loudspeaker 101 may also be configured to: receive audio data from the smart device 100 via the first wireless connection 103; the received audio data is forwarded to the at least one second loudspeaker 102 via a second wireless connection 104. The related communication parameters are communication parameters required for monitoring the first wireless connection, and are different with the different attributes of the first wireless connection; taking the first wireless connection 103 as a bluetooth connection as an example, the related communication parameters may include at least one or more of a bluetooth address of the first speaker 101, a bluetooth picnet clock, frequency hopping related information, connection encryption information, and the like.

Various wireless communication methods can be used for the first wireless connection 103 and the second wireless connection 104. In some embodiments, the first wireless connection 103 may be any one of a bluetooth connection, a bluetooth low energy connection, and an audio low energy (LE audio) connection, and the second wireless connection 104 may be a WIFI connection. Many current smart devices 100, such as cell phones, provide bluetooth communication capabilities, and any of bluetooth connection, bluetooth low energy connection, and audio low energy (LE audio) connection is used as the first wireless connection 103, so that the speaker assemblies 101 and 102 can be widely applied to the smart device 100. by using the WIFI connection as the second wireless connection 104, the forwarding of audio data from the first speaker 101 to each of the second speakers 102 can use a wider bandwidth, have stronger interference resistance, and can be transmitted over a longer distance; this allows first enclosure 101 to reliably and quickly forward audio data to multiple second enclosures 102, and also reduces latency in audio transmission.

Each second speaker 102 may be configured to: the communication quality parameters of the listening wireless connection 106 between the second loudspeaker 102 and the smart device 100 are determined by listening to the first wireless connection 103. It is also possible to specify an enclosure among the first enclosure 101 and the at least one second enclosure 102, which may be configured to: based on the determined communication quality parameters of the listening wireless connection 106 between each second loudspeaker 102 and the smart device 100, one second loudspeaker 102 is determined to switch with the first loudspeaker 100.

As shown in fig. 1, when it is determined that there is a listening wireless connection 106 having a better communication quality parameter than the first wireless connection 103, it may be determined that the second enclosure 102 (e.g., the rightmost second enclosure 102, as shown in fig. 1) having the best communication quality parameter of the plurality of listening wireless connections 106 is switched to the first enclosure 101, and the first enclosure 101 before switching no longer performs the function of the first enclosure 101 (also referred to as a "master enclosure"), but instead functions as one of the second enclosures 102 (also referred to as a "slave enclosure").

In some embodiments, in order to reduce the switching frequency, the switching between the master and slave speakers is performed when the communication quality parameter of the second speaker 102 listening to the wireless connection 106 with the best communication quality parameter exceeds a predetermined value compared to the first wireless connection 103.

The first wireless connection 103 is exemplified as a bluetooth connection. The new second speaker 102, also referred to as the switched first speaker 101, selected to switch the first speaker 101 may listen to the first wireless connection 103 using the relevant communication parameters, receive the bluetooth frame from the smart device 100, and may start at the scheduled timing, not only receive the bluetooth frame from the smart device 100, but also pretend to be the previous first speaker 101, and reply with an ACK/NACK message to the smart device 100. When the switched first speaker 102 correctly receives the bluetooth frame, ACK information is returned to the smart device 100, otherwise NACK is returned. By "masquerading," it is meant that the bluetooth address of the bluetooth frame is still the previous bluetooth address of first speaker 101, and the communication parameters of intercepted communication connection 106, including timing, are all consistent with first wireless connection 103; for the smart device 100, it is not aware that the first speaker 101 has changed, and during and before and after the switching of the first speaker 101, the first wireless connection 103 is continuously working for the smart device 100. From the perspective of the user, the audio transmission will not be interrupted or temporarily interrupted due to the switching of the first sound box 101, so as to avoid the stuttering and discontinuity of the music or voice playing due to the switching of the first sound box 101.

Various ways may be used to determine whether to switch first enclosure 101 and which second enclosure 102 is to be switched to first enclosure 101.

FIG. 2 shows a flow diagram of a first example of a process of determining whether to switch a first enclosure and determining a second enclosure to switch to the first enclosure, according to an embodiment of the disclosure. As shown in fig. 2, in step 201, the RSSI (received signal strength indication) of the first wireless connection may be determined, and in step 202, the maximum of the RSSI of the respective listening wireless connections may be determined. In some embodiments, the RSSI value of the first wireless connection may be determined by a first loudspeaker and the RSSI value of each listening wireless connection may be determined by a corresponding respective second loudspeaker. Taking bluetooth connection as an example, the bluetooth communication module built in each speaker can conveniently monitor the RSSI of the bluetooth communication connection without demodulating bluetooth frames. In some embodiments, the RSSI of each timed bluetooth communication connection (sometimes the RSSI of the first wireless connection, sometimes the RSSI of the listening wireless connection) may also be conveniently monitored by the bluetooth communication module built into the smart device.

The maximum of the RSSI of the first wireless connection and the RSSI of each listening wireless connection determined in

steps

201 and 202 may be provided and summarized to a processing unit, such as but not limited to a designated speaker in a speaker assembly, a smart device, a cloud processor, etc., to determine whether the maximum RSSI value of the listening wireless connection is greater than the RSSI value of the first wireless connection (step 203). If yes, determining a second sound box corresponding to the listening wireless connection with the maximum RSSI (step 204) and switching the first sound box to the corresponding second sound box (step 205); if not, then the process ends (step 206) and the first loudspeaker maintains its role and function. By utilizing the switching mechanism between the first sound box and the second sound box, the wireless connection between the first sound box and the intelligent equipment which plays an important relay role can be ensured to be the best one with the best communication quality in the wireless connection between each sound box and the intelligent equipment, and when the wireless connection is poor due to the change of the distance between the original first sound box and the intelligent equipment or the change of space shielding, the original first sound box can be automatically switched (even switched to) to the second sound box with the best interception wireless connection, so that the situation that the sound boxes are blocked, discontinuous or interrupted in the receiving and playing of audio data is avoided.

In some embodiments, in order to reduce the switching frequency, the switching between the first and second speakers is performed when the maximum value of the monitored wireless connection RSSI values is greater than the first wireless connection RSSI value by more than a predetermined value.

FIG. 3 shows a flow diagram of a second example of a process of determining whether to switch a first enclosure and determining a second enclosure to switch to the first enclosure, according to an embodiment of the disclosure. As shown in fig. 3, at step 301, at least a portion of a communication frame may be received by a first speaker from a smart device via the first wireless connection to determine an indicator parameter characterizing communication quality of the first wireless connection. At step 302, at least a portion of the communication frame may be received by each second loudspeaker via its listening wireless connection with the smart device to determine an indicator parameter characterizing the communication quality of each listening wireless connection. In some embodiments, taking bluetooth communication as an example, the indicator parameters of the communication quality include, but are not limited to, any one or more of PLR (packet loss rate), PER (packet error rate), BER (bit error rate), SNR (signal to noise ratio) of the bluetooth frame, and these indicator parameters are typically determined by demodulating the bluetooth frame. By "receiving at least part of the communication frame" is meant selectively receiving the communication frame from the smart device, such as receiving only a control frame with a small data amount instead of an audio frame, or intermittently and partially receiving part of a bluetooth frame, thereby reducing power consumption and reducing time consumption and computational load for determining the index parameter (the amount of calculation for demodulation is lower).

The indicator parameter characterizing the communication quality of the first wireless connection and the indicator parameter characterizing the communication quality of each intercepted wireless connection determined in

steps

301 and 302 may be summarized to a processing unit, such as but not limited to a designated speaker, a smart device, a cloud processor, etc., to determine the second speaker 303 with the best communication quality of the intercepted wireless connection, such as at least one or several of the smallest second speakers in PLR (packet loss rate), PER (packet error rate), BER (bit error rate), SNR (signal to noise ratio). In step 304, it may be determined whether the communication quality of the listening wireless connection of the second loudspeaker is better than that of the first wireless connection, for example, it may be determined whether at least one or several of the former PLR (packet loss rate), PER (packet error rate), BER (bit error rate), SNR (signal to noise ratio) is/are smaller than the corresponding parameters in the latter PLR (packet loss rate), PER (packet error rate), BER (bit error rate), SNR (signal to noise ratio). If yes, switching the first sound box to the corresponding second sound box (step 305); if not, ending, and maintaining the role and the function of the first loudspeaker box.

Note that in

steps

203 and 304, a threshold value may also be set for the comparison. For example, in step 203, the switching of the first loudspeaker is performed if the maximum RSSI of the listening wireless connection is greater than the RSSI of the first wireless connection by a first threshold. For another example, in step 304, when at least one or more of PLR (packet loss rate), PER (packet error rate), BER (bit error rate), and SNR (signal to noise ratio) of the listening wireless connection is smaller than the second threshold, the switching of the first speaker is performed. Thus, unnecessary handover due to errors can be avoided.

In some embodiments, the first speaker may transmit the communication parameters related to the first wireless connection to the second speakers under certain conditions, so as to reduce power consumption and communication load. For example, the communication parameters associated with the first wireless connection may be transmitted periodically. In some embodiments, the communication parameters associated with the first wireless connection may be transmitted to the respective second speakers in the event that at least a portion of the communication parameters associated with the first wireless connection change. In particular, if the relevant communication parameters of the first wireless connection are not changed, the respective second loudspeaker boxes can listen to the first wireless connection by using the previously received and obtained relevant communication parameters, the repeated transmission of the existing relevant communication parameters of the second loudspeaker boxes is redundant, and the transmission is performed in the case that at least part of the relevant communication parameters of the first wireless connection are changed, so that the power consumption and the communication load can be further reduced, and meanwhile, the second loudspeaker boxes can be ensured to always obtain the relevant communication parameters in time to listen. In some embodiments, the related communication parameters of the first wireless connection may be transmitted by the first loudspeaker to the respective second loudspeaker in case the communication quality of the first wireless connection is lower than a first threshold, or in case at least one second loudspeaker does not feed back the communication quality of the listening wireless connection for a certain time. The fact that the at least one second loudspeaker box does not feed back and listen to the communication quality of the wireless connection within a certain time may be caused by poor communication quality of the first wireless connection or the second wireless connection, and in the case that the second wireless connection adopts a communication mode such as WIFI with a wider bandwidth, a stronger interference resistance, and a longer transmission distance, the poor communication quality of the first wireless connection is generally caused. Therefore, the related communication parameters can be transmitted to the second loudspeaker box only under the condition that the communication quality of the first wireless connection is poor, so that the latter can monitor the first wireless connection, and further when needed, the monitoring wireless connection with better communication quality is utilized to replace the first wireless connection and change the corresponding second loudspeaker box into the first loudspeaker box (namely, the main loudspeaker box), so that the power consumption and the communication load are further reduced, meanwhile, the smooth and uninterrupted data transmission between the main loudspeaker box and the intelligent equipment is ensured, all the loudspeaker boxes can continuously receive the audio without interruption, and the interruption or blockage of the audio playing is avoided.

For a multi-enclosure system, multiple enclosures may be arranged in different rooms or remotely from each other. In some embodiments, a given speaker may be configured to: selecting a first sound box and at least part of second sound boxes for playing audio based on the determined communication quality parameters of the intercepted wireless connection between each second sound box and the intelligent equipment; and transmit an indication of whether to play audio to each second loudspeaker. Note that the first speaker here is a first speaker with better communication quality after switching, and by switching and replacing the first speaker with a second speaker with better communication quality that listens to the wireless connection in real time as needed, it can be ensured that the communication quality between the main speaker and the smart device is always good via the switching. In addition to the first loudspeaker box with good communication quality, at least part of the second loudspeaker boxes can be selected, for example, N (N > 1) of all the second loudspeaker boxes with optimal parameters (any one of RSSI, PLR, PER, BER and SNR) for intercepting wireless connection, wherein the parameters are used for playing audio, so that the second loudspeaker boxes with poor data transmission and playing pause interruption caused by poor position or distance can be prevented from influencing the audio playing effect of the whole multi-loudspeaker box system. In addition, users often carry smart devices with them, and for those speakers that are far away from the smart device, even in different rooms, users may not need those speakers to play audio.

In some embodiments, each second speaker may be further configured to: and under the condition that the instruction of not playing the audio is received, not receiving the audio data forwarded from the first loudspeaker box. At this time, the first speaker may not forward the audio data to the speaker. In this way, it can be ensured that the second loudspeaker box is useful for receiving the forwarded audio data (the received audio data are all used for playing) and the receiving effect is optimized, thereby optimizing the receiving efficiency of the audio data while reducing the power consumption. Specifically, the speaker that does not play audio will still receive the relevant communication parameters from time to time, and accordingly, the quality of the wireless communication connection between the speaker and the smart device is monitored and evaluated to determine whether to play audio and not to switch the main speaker.

In some embodiments, the first speaker and the second speaker may each be provided with a microphone to meet the requirement of remote speech recognition. The designated loudspeaker may be further configured to: based on the communication quality parameters of the first wireless connection and the communication quality parameters of the respective listening wireless connection, selecting at least part of the microphones of the loudspeaker enclosure for voice pickup. Specifically, the distance or occlusion between each speaker and the smart device may be inferred based on the quality of the wireless communication connection between each speaker and the smart device, from which an appropriate microphone may be selected for remote voice pickup, referred to herein as the working MIC. In some embodiments, the one or more enclosures with the best communication quality of the wireless communication connection are selected as the operating MIC. In some embodiments, the current main loudspeaker box can be directly selected as the working MIC, and only one MIC can be selected as the working MIC, so that the system power consumption can be reduced. In some embodiments, P (P > 1) sound boxes with the best communication quality of the wireless communication connection can be selected as the working MIC, and the voice data collected by the P MICs can be fused with each other. In some embodiments, when merging with each other, the voice data collected by the P MICs may be weighted based on the communication quality of the wireless communication connection between the speaker to which each working MIC belongs and the smart device. For each loudspeaker box which communicates with the intelligent device by using the Bluetooth, for example, the weight can be set for the voice data collected by the work MIC carried by the loudspeaker box based on the SNR of the Bluetooth connection, and for example, the weight can be set for the voice data collected by the work MIC carried by the loudspeaker box based on the RSSI of the Bluetooth connection.

FIG. 4 shows a timing diagram of a process flow for a second enclosure to switch with a first enclosure in accordance with an embodiment of the disclosure. As shown in fig. 4, it may first be determined which second enclosure is to be switched with the first enclosure, in which case the switching may be completed within a time period between times t2-t3, and the second enclosure may be enabled to begin receiving audio data from the smart device using the listening wireless connection for a predetermined time period t1-t2 (e.g., on the order of tens of ms) prior to the switching, for forwarding the audio data to other enclosures within a time period t3-t4 after the switching. In this manner, after the switch, the previous first loudspeaker may cease forwarding audio data to other loudspeakers, for forwarding by the new first loudspeaker, and the new first loudspeaker may directly forward the audio data from the smart device that is ready (e.g., received and cached locally) without waiting for the audio data to be received from the smart device. Therefore, the audio playing of the sound box assembly can be ensured to be continuous without interruption and without pause.

Fig. 5 is a timing chart illustrating a coordination processing flow of the first sound box before and after switching (i.e., the old and new first sound boxes) after switching the first sound box according to an embodiment of the present disclosure. As shown in fig. 5, the switching of the first enclosures is completed in the time period between t6-t7, and it is already known which second enclosure will become the new first enclosure in the time period between times t5-t6 and the pre-operation before the switching is performed. After the switch, the first loudspeaker before the switch may continue to forward its buffered audio data to other loudspeakers for time period t7-t 8. The switched first loudspeaker box can receive the audio data from the intelligent device, for example, the audio data from the intelligent device can be received in a time period t7-t8 when the first loudspeaker box before switching forwards the buffered audio data, and the audio data received by the first loudspeaker box before switching is forwarded to other loudspeaker boxes in a time period t8-t9 after the first loudspeaker box before switching forwards the buffered audio data. This ensures that the audio is played continuously without interruption and jamming. Accordingly, the first speaker before switching becomes the second speaker, and the audio data forwarded by the first speaker after switching can be received in the time period t8-t 9.

In various embodiments of the present disclosure, the switching of the first speaker is seamless, without interrupting the communication frame transmission of the wireless communication connection between the original first speaker and the smart device, or even without disconnecting the wireless communication connection between the original first speaker and the smart device, and then the new first main box reestablishes the wireless communication connection with the smart device through the peer-to-peer interface.

In some embodiments, the audio data received from the smart device may be stereo audio data. Each speaker may be configured to: playing preset audio signals of corresponding sound channels; the stereo audio data received from the first speaker is extracted and converted into an audio signal preset to be played by the first speaker. In some embodiments, the stereo audio data may be converted into audio signals of respective channels at the first loudspeaker, so that only the audio signals of the channels preset to be played by the second loudspeaker need to be transmitted to the second loudspeakers, thereby significantly reducing the data transmission amount between the loudspeakers.

Taking a sound box assembly playing 5.1 sound channels as an example, as shown in fig. 6, it may be preset that: the sound box 602 is a center sound box disposed in the front center of the smart device 600, and is configured to play an audio signal of a center sound channel; the

sound boxes

603a and 603b are left and right front sound boxes arranged on the left and right front sides of the smart device 600, and are respectively used for playing audio signals of front left and right sound channels; the speakers 604a and 604b are left and right surround speakers disposed around the user 601 (e.g., at the left and right sides of the rear), and are respectively used for playing audio signals of left and right surround channels; and loudspeaker 605 may be a subwoofer arranged to the left of the left front loudspeaker 603a for playing a so-called 0.1 subwoofer channel.

The 5.1 channels are merely exemplary, and in some embodiments, the stereo audio signal may be any one of four-channel surround, 4.1 channels, 5.1 channels, and 7.1 channels, and each speaker may be preset to play one of the audio signals in any one of the channel modes. As an example, which audio signal is played by each speaker may also be adjusted and configured by the smart device or the current first speaker.

Fig. 7 illustrates a flow diagram of a communication method for an enclosure assembly including a first enclosure and at least one second enclosure, the first enclosure configured to: receiving audio data from the smart device via the first wireless connection; forwarding the received audio data to the at least one second loudspeaker via a second wireless connection. As shown in fig. 7, in step 701, the first speaker transmits the communication parameters related to the first wireless connection to the second speakers. At step 702, the first wireless connection is intercepted by each second loudspeaker box using the associated communication parameters to determine communication quality parameters of the intercepted wireless connection. In step 703, a second speaker may be determined to switch with the first speaker based on the communication quality parameter of the intercepted wireless connection of each second speaker. So, can switch into the second audio amplifier that the communication quality is better of listening communication connection with the first audio amplifier that communication quality is not good to ensure that present first audio amplifier always has good communication with the smart machine, thereby avoid the interruption and the card pause of the audio playback of a plurality of audio amplifiers. For the smart device, it cannot perceive that the first speaker has changed, and for the smart device 100, the first wireless connection is working continuously during and before and after the switching of the first speaker. From the perspective of the user, the audio transmission is not interrupted or temporarily interrupted due to the switching of the first sound box, and the phenomenon that the music or voice playing is blocked and discontinuous due to the switching of the first sound box is avoided.

Some details of steps 701 to 703 have already been described in detail above with reference to fig. 2 to 6, and are not described herein again.

In some embodiments, the communication parameters associated with the first wireless connection are transmitted by the first loudspeaker to each second loudspeaker in at least one of: the communication quality of the first wireless connection is below a first threshold; a change in communication parameters associated with at least a portion of the first wireless connection; and at least one second loudspeaker box does not feed back the communication quality of the interception wireless connection within a certain time.

In particular, if the relevant communication parameters of the first wireless connection are not changed, the respective second loudspeaker boxes can listen to the first wireless connection by using the previously received and obtained relevant communication parameters, the repeated transmission of the existing relevant communication parameters of the second loudspeaker boxes is redundant, and the transmission is performed in the case that at least part of the relevant communication parameters of the first wireless connection are changed, so that the power consumption and the communication load can be further reduced, and meanwhile, the second loudspeaker boxes can be ensured to always obtain the relevant communication parameters in time to listen. In some embodiments, the related communication parameters of the first wireless connection may be transmitted by the first loudspeaker to the respective second loudspeaker in case the communication quality of the first wireless connection is lower than a first threshold, or in case at least one second loudspeaker does not feed back the communication quality of the listening wireless connection for a certain time. The fact that the at least one second loudspeaker box does not feed back and listen to the communication quality of the wireless connection within a certain time may be caused by poor communication quality of the first wireless connection or the second wireless connection, and in the case that the second wireless connection adopts a communication mode such as WIFI with a wider bandwidth, a stronger interference resistance, and a longer transmission distance, the poor communication quality of the first wireless connection is generally caused. Therefore, the related communication parameters can be transmitted to the second loudspeaker box only under the condition that the communication quality of the first wireless connection is poor, so that the latter can monitor the first wireless connection, and further when needed, the monitoring wireless connection with better communication quality is utilized to replace the first wireless connection and change the corresponding second loudspeaker box into the first loudspeaker box (namely, the main loudspeaker box), so that the power consumption and the communication load are further reduced, meanwhile, the smooth and uninterrupted data transmission between the main loudspeaker box and the intelligent equipment is ensured, all the loudspeaker boxes can continuously receive the audio without interruption, and the interruption or blockage of the audio playing is avoided.

In some embodiments, rather than directly using each speaker for playing audio, a first speaker and at least a portion of a second speaker are selected for playing audio based on a communication quality parameter of the respective intercepted wireless connection; and stopping the second loudspeaker box which is not used for playing the audio from receiving the forwarded audio data. Note that the first speaker here is a first speaker with better communication quality after switching, and by switching and replacing the first speaker with a second speaker with better communication quality that listens to the wireless connection in real time as needed, it can be ensured that the communication quality between the main speaker and the smart device is always good via the switching. In addition to the first loudspeaker box with good communication quality, at least part of the second loudspeaker boxes can be selected, for example, N (N > 1) of all the second loudspeaker boxes with optimal parameters (any one of RSSI, PLR, PER, BER and SNR) for intercepting wireless connection, wherein the parameters are used for playing audio, so that the second loudspeaker boxes with poor data transmission and playing pause interruption caused by poor position or distance can be prevented from influencing the audio playing effect of the whole multi-loudspeaker box system. Further, by stopping (prohibiting) the reception of the forwarded audio data by the second speaker which is not used for playing audio, it can be ensured that the reception of the forwarded audio data by the second speaker is all useful (the received audio data is all used for playing) and the reception effect is optimized, thereby optimizing the reception efficiency of the audio data while reducing power consumption. Specifically, the speaker that is not playing audio will still receive the relevant communication parameters from time to time, and accordingly, the quality of the wireless communication connection between the speaker and the smart device is monitored and evaluated to determine whether to not play audio and not to switch the main speaker, but not to receive the forwarded audio data redundantly.

In some embodiments, the first speaker and the second speaker may each be provided with a microphone to meet the requirement of remote speech recognition. The communication method may further include: based on the communication quality parameters of the first wireless connection and the communication quality parameters of the respective listening wireless connection, selecting at least part of the microphones of the loudspeaker enclosure for voice pickup. Specifically, the distance or occlusion between each speaker and the smart device may be inferred based on the quality of the wireless communication connection between each speaker and the smart device, from which an appropriate microphone may be selected for remote voice pickup, referred to herein as the working MIC. In some embodiments, the one or more enclosures with the best communication quality of the wireless communication connection are selected as the operating MIC. In some embodiments, the current main loudspeaker box can be directly selected as the working MIC, and only one MIC can be selected as the working MIC, so that the system power consumption can be reduced. In some embodiments, P (P > 1) sound boxes with the best communication quality of the wireless communication connection can be selected as the working MIC, and the voice data collected by the P MICs can be fused with each other. In some embodiments, when merging with each other, the voice data collected by the P MICs may be weighted based on the communication quality of the wireless communication connection between the speaker to which each working MIC belongs and the smart device. For each loudspeaker box which communicates with the intelligent device by using the Bluetooth, for example, the weight can be set for the voice data collected by the work MIC carried by the loudspeaker box based on the SNR of the Bluetooth connection, and for example, the weight can be set for the voice data collected by the work MIC carried by the loudspeaker box based on the RSSI of the Bluetooth connection.

In summary, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments based on the present disclosure with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.

The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the foregoing detailed description, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

Claims

1. A method of wireless communication of an enclosure assembly, the enclosure assembly comprising a first enclosure and at least one second enclosure, the first enclosure configured to: receiving audio data from the smart device via the first wireless connection; forwarding the received audio data to the at least one second loudspeaker via a second wireless connection, the wireless communication method comprising:

transmitting, by the first loudspeaker, the relevant communication parameters of the first wireless connection to each second loudspeaker;

intercepting, by each second loudspeaker, the first wireless connection using the associated communication parameters to determine communication quality parameters of the intercepted wireless connection;

in a case where it is determined that there is an intercepted wireless connection having a communication quality parameter better than the first wireless connection, determining a second speaker for intercepting the communication quality parameter of the wireless connection best to switch with the first speaker to receive audio data from the smart device via the intercepted wireless connection and to forward the received audio data to the first speaker and other second speakers via the second wireless connection.

2. The wireless communication method according to claim 1, further comprising: determining an RSSI of the first wireless connection;

in a case where it is determined that there is an intercepted wireless connection having a better communication quality parameter than the first wireless connection, determining a second speaker to switch to the first speaker with a second speaker having a best communication quality parameter for intercepting the wireless connection includes: and determining a second sound box which has the maximum RSSI value of the listening wireless connection and is greater than the RSSI of the first wireless connection so as to be switched with the first sound box.

3. The wireless communication method according to claim 1, further comprising:

receiving, by the first loudspeaker, at least a portion of the communication frame via the first wireless connection to determine an indicator parameter characterizing communication quality of the first wireless connection;

listening, by each second loudspeaker, to the first wireless connection using the associated communication parameters to determine communication quality parameters of the listening wireless connection comprises: receiving at least part of the communication frames via the listening wireless connections to determine an indicator parameter characterizing the communication quality of the respective listening wireless connection.

4. The wireless communication method according to claim 1, wherein the communication parameters related to the first wireless connection are transmitted from the first loudspeaker to each second loudspeaker in at least one of the following cases: the communication quality of the first wireless connection is below a first threshold; a change in communication parameters associated with at least a portion of the first wireless connection; and at least one second loudspeaker box does not feed back the communication quality of the interception wireless connection within a certain time.

5. The wireless communication method according to any of claims 1-3, further comprising:

based on the communication quality parameters of each intercepted wireless connection, selecting a first sound box and at least part of a second sound box for playing audio;

and stopping the second loudspeaker box which is not used for playing the audio from receiving the forwarded audio data.

6. The wireless communication method according to any of claims 1-3, further comprising: based on the communication quality parameters of the first wireless connection and the communication quality parameters of the respective listening wireless connection, selecting at least part of the microphones of the loudspeaker enclosure for voice pickup.

7. The wireless communication method according to any of claims 1-3, further comprising: and receiving the audio data from the intelligent equipment in a preset time period before switching by a second loudspeaker box which is switched with the first loudspeaker box, and forwarding the audio data to other loudspeaker boxes after switching.

8. The wireless communication method according to any one of claims 1 to 3, further comprising, after switching the first speaker:

the first sound box before switching continuously forwards the cached audio data to other sound boxes;

after the first sound box before switching forwards the cached audio data, the first sound box after switching forwards the received audio data from the intelligent device to other sound boxes.

9. The wireless communication method according to any of claims 1-3, further comprising: presetting which sound channel audio signal is played by each sound box; stereo audio data from the smart device is received, extracted therefrom and converted into audio signals of the respective channels.

10. An audio amplifier assembly for wireless communication, the audio amplifier assembly comprising a first audio amplifier and at least one second audio amplifier, characterized in that:

the first speaker is configured to: receiving audio data from the smart device via the first wireless connection; transmitting the communication parameters associated with the first wireless connection to each second loudspeaker so that each second loudspeaker can listen to the first wireless connection; forwarding the received audio data to the at least one second loudspeaker via a second wireless connection;

each second speaker is configured to: determining a communication quality parameter of the intercepted wireless connection between the second loudspeaker box and the smart device by intercepting the first wireless connection;

wherein a designated loudspeaker of the first loudspeaker and the at least one second loudspeaker is configured to: in a case where it is determined that there is an intercepted wireless connection having a communication quality parameter better than the first wireless connection, a second speaker that intercepts the wireless connection having the best communication quality parameter is determined to switch from the first speaker to each other, so that the second speaker receives audio data from the smart device via the intercepted wireless connection and forwards the received audio data to the first speaker and other second speakers via the second wireless connection.

11. The acoustic enclosure assembly of claim 10, wherein the first acoustic enclosure is configured to: determining an RSSI value for the first wireless connection;

each second speaker is configured to: determining an RSSI value of an intercepted wireless connection between the intelligent device and the intelligent device;

the designated loudspeaker is further configured to: and determining a second sound box which has the maximum RSSI value of the intercepted wireless connection and is greater than the RSSI value of the first wireless connection so as to be switched with the first sound box.

12. The acoustic enclosure assembly of claim 10, wherein the first acoustic enclosure is configured to: receiving at least a portion of a communication frame via the first wireless connection to determine an indicator parameter characterizing communication quality of the first wireless connection;

each second speaker is configured to: receiving at least part of the communication frames via the listening wireless connections between it and the smart device to determine an indicator parameter characterizing the communication quality of each listening wireless connection;

the designated loudspeaker is further configured to: and determining the second loudspeaker box which listens to the wireless connection with the best communication quality and better than the first wireless connection so as to switch with the first loudspeaker box.

13. The loudspeaker assembly of any one of claims 10-12, wherein a first loudspeaker is further configured to transmit the associated communication parameters of the first wireless connection to a respective second loudspeaker in at least one of:

the communication quality of the first wireless connection is below a first threshold;

a change in communication parameters associated with at least a portion of the first wireless connection; and

the at least one second loudspeaker box does not feed back the communication quality of the listening wireless connection for a certain time.

14. The loudspeaker assembly of any of claims 10-12, wherein the designated loudspeaker is further configured to: selecting a first sound box and at least part of second sound boxes for playing audio based on the determined communication quality parameters of the intercepted wireless connection between each second sound box and the intelligent equipment; and transmitting an indication of whether to play audio to each second loudspeaker;

each second speaker is further configured to: and under the condition that the instruction of not playing the audio is received, not receiving the audio data forwarded from the first loudspeaker box.

15. The loudspeaker assembly of any of claims 10-12, wherein the first loudspeaker and the second loudspeaker are each provided with a microphone, the designated loudspeaker further configured to: based on the communication quality parameters of the first wireless connection and the communication quality parameters of the respective listening wireless connection, selecting at least part of the microphones of the loudspeaker enclosure for voice pickup.

16. The loudspeaker assembly of any of claims 10-12, wherein the second loudspeaker is further configured to: in the event that it is determined that it is to be switched with a first loudspeaker, audio data from the smart device is received within a predetermined time period prior to the switch for forwarding the audio data to other loudspeakers after the switch.

17. Loudspeaker assembly according to any of claims 10-12, wherein, after switching the first loudspeaker,

the first loudspeaker prior to switching is configured to: continuously transmitting the cached audio data to other sound boxes;

the switched first loudspeaker is configured to: receiving audio data from the smart device; and after the first loudspeaker box before switching forwards the cached audio data, forwarding the audio data received by the first loudspeaker box from the intelligent device to other loudspeaker boxes.

18. A loudspeaker assembly according to any one of claims 10 to 12, wherein the first wireless connection is any one of a bluetooth connection, a bluetooth low energy connection and an audio low energy (LE audio) connection, and the second wireless connection is a WIFI connection.

19. The loudspeaker assembly of any one of claims 10-12, wherein the audio data received from the smart device is stereo audio data;

each speaker is configured to: playing preset audio signals of corresponding sound channels; the stereo audio data received from the first speaker is extracted and converted into an audio signal preset to be played by the first speaker.