A multi-collaborative working method for active speakers

Abstract

The application discloses a kind of active speaker's multi-cooperation work method, it is applicable to the interconnection communication work when multiple same active speaker one-dimensional arrangement.The active speaker is interconnected by wireless signal, then receives and sends specific frequency test signal by the microphone and loudspeaker of self-provided, judges the relative position between each active speaker according to the time difference when receiving, obtains arrangement order, to carry out sound channel distribution.The application can be interconnected with same active speaker and carry out relative position judgment and sound channel distribution automatically when multiple same active speaker one-dimensional arrangement and have the demand of interconnection work, need not worry about sound field confusion.

Description

Technical Field

[0001] This invention relates to the field of active speakers, and more specifically to a method for communication and collaboration between active speakers. Background Technology

[0002] To increase volume and achieve better listening quality, multiple powered speakers are often used as a single audio system. To use an audio system with multiple powered speakers, users need to correctly configure the channels for each speaker. However, if users are unfamiliar with speaker placement, they may perform incorrect channel configurations, and the error rate increases as the number of speakers increases.

[0003] Therefore, it is necessary to provide a method for multiple active speakers to automatically set the channels and frequency bands according to their placement after being interconnected, so as to work together. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method that can automatically determine the position of multiple active speakers of the same type when they need to work together, thereby setting the channels and avoiding sound field chaos.

[0005] To address this issue, the present invention provides a method for multi-channel collaborative operation of active speakers, applicable to the interconnection and communication of multiple identical active speakers arranged in a one-dimensional configuration. In addition to left and right channel loudspeakers, each active speaker also includes left and right channel microphones, and the multiple active speakers are arranged in a one-dimensional configuration. The method includes the following steps:

[0006] Step S1: The main active speaker sends out the connection invitation signal;

[0007] Step S2: The connected active speaker replies with the connection invitation signal;

[0008] Step S3: The main active speaker establishes a communication channel with the connected active speakers and latches the number N of connected active speakers (including the main active speaker).

[0009] Step S4: The interconnected active speakers sequentially emit the detection signal individually, while the active speakers that do not emit the detection signal receive the detection signal through the left and right channel microphones.

[0010] In step S5, the active speaker that did not emit the detection signal in step S4 determines its position relative to the active speaker that emitted the detection signal based on the received detection signal.

[0011] Step S6: Based on the number N of connected active speakers latched in step S3 and the relative positions of the active speakers in step S5, the input signal is divided into frequencies and sent to each active speaker to complete the channel setup.

[0012] A further improvement of the present invention is that, in step S1, the connection invitation signal emitted by the main active speaker is a wireless signal, which can be emitted by its own speaker at a specific frequency f1, or it can be transmitted by its own processor as a wireless communication signal with a special protocol.

[0013] A further improvement of the present invention is that, in step S2, the connection invitation signal replied by the connected active speaker is a wireless communication signal with a special protocol sent through its built-in processor.

[0014] A further improvement of the present invention is that, in step S4, the interconnected active speakers sequentially and individually emit the detection signal, which is a detection signal with a specific frequency of f2 emitted by their own speakers; the left and right channel microphones of the active speakers that do not emit detection signals will simultaneously receive the detection signal, while the active speakers that emit detection signals turn off their own microphones and do not receive signals.

[0015] A further improvement of the present invention is that, in step S5, after the active speaker that does not emit a detection signal receives the detection signal through the left and right channel microphones, its built-in processor determines its position relative to the active speaker that emits the detection signal as left or right based on the time difference between the detection signals received by the left and right channel microphones; and each active speaker will perform N-1 detections.

[0016] A further improvement of the present invention is that, in step S6, since the active speakers are arranged in a one-dimensional manner, the leftmost speaker in step S5 is determined to be on the left relative to the active speaker emitting the detection signal in all N-1 judgments; the second speaker on the left is determined to be on the left relative to the active speaker emitting the detection signal in all N-2 judgments in step S5, and on the right in one judgment; and so on. By arranging the judgment results from largest to smallest number of times the speaker is on the left relative to the active speaker emitting the detection signal, the one-dimensional position of all connected active speakers can be determined. The same applies to the right side, thus automatically and completely determining the position between the active speakers.

[0017] A further improvement of the present invention is that, in step S6, when N=2k (K is a positive integer), the left k active speakers are set as the left channel and the right k active speakers are set as the right channel; when N=2k+1 (K is a positive integer), the left k active speakers are set as the left channel and the right k active speakers are set as the right channel, and the channel configuration of the (k+1)th active speaker from the left can be set by the user.

[0018] The present invention provides a method for multi-cooperative operation of active speakers. When multiple identical active speakers are arranged in one dimension and have the need for interconnection, the method automatically determines the relative position of the connected active speakers and thus allocates channels.

[0019] To make the above description of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a flowchart of a multi-cooperative working method for an active speaker according to the present invention;

[0022] Figure 2 This is a schematic diagram illustrating the operation of a multi-cooperative working method for active speakers as described in this invention when three active speakers are connected.

[0023] Figure 3 This is a schematic diagram illustrating the operation of a multi-cooperative working method for active speakers as described in this invention when six active speakers are connected. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0025] Please see Figure 1 This is a flowchart illustrating a multi-cooperative operation method for an active speaker according to the present invention. It includes:

[0026] Step S1: The main active speaker sends a connection invitation signal; it can either emit a signal of a specific frequency f1 through its own speaker, or send a wireless communication signal with a special protocol through its built-in processor.

[0027] Step S2: The connected active speaker replies with a connection invitation signal; this reply is a wireless communication signal with a special protocol sent through its built-in processor.

[0028] Step S3: The main active speaker establishes a communication channel with the active speakers to be connected, and latches the number N of connected active speakers (including the main active speaker).

[0029] In step S4, each connected active speaker sequentially emits a detection signal at a frequency of f2 through its built-in speaker. At the same time, active speakers that do not emit detection signals receive detection signals through their left and right channel microphones, while active speakers that emit detection signals turn off their own microphones and do not receive signals.

[0030] In step S5, after the active speaker that did not emit a detection signal in step S4 receives the detection signal through the left and right channel microphones, its built-in processor determines its position relative to the active speaker that emitted the detection signal as left or right based on the time difference between the detection signals received by the left and right channel microphones. Each active speaker will perform N-1 detections.

[0031] Step S6: Based on the number N of connected active speakers latched in Step S3 and the judgment results of the relative positions of the active speakers in Step S5, the input signal is frequency-divided and sent to each active speaker to complete the channel setup. Since the active speakers are arranged in one dimension, the leftmost speaker's position relative to the active speaker that emitted the detection signal is left in all N-1 judgments in Step S5; the second left speaker's position relative to the active speaker that emitted the detection signal is left in all N-2 judgments in Step S5, and right in one judgment; and so on. The one-dimensional position of all connected active speakers can be determined by arranging the number of times the speaker's position relative to the active speaker that emitted the detection signal is left from largest to smallest. The same applies to the right side, thus automatically and completely determining the position between the active speakers. When N=2k (K is a positive integer), the left k active speakers are set as the left channel and the right k active speakers are set as the right channel; when N=2k+1 (K is a positive integer), the left k active speakers are set as the left channel and the right k active speakers are set as the right channel. The channel configuration of the (k+1)th active speaker from the left can be set by the user.

[0032] Please see Figure 2This is a schematic diagram illustrating the operation of a multi-cooperative working method for active speakers according to the present invention when three active speakers are connected. Active speaker L1 includes a left channel microphone M11, a right channel microphone M12, a left channel speaker S11, and a right channel speaker S12; active speaker L2 includes a left channel microphone M21, a right channel microphone M22, a left channel speaker S21, and a right channel speaker S22; and active speaker L3 includes a left channel microphone M31, a right channel microphone M32, a left channel speaker S31, and a right channel speaker S32. Assume L1 is the main active speaker, emitting a signal of specific frequency f1 via S11 and S12, which is the connection invitation signal; L2 and L3 reply to the connection invitation signal via wireless communication signals with a special protocol sent by their built-in processors; L1 establishes a communication channel with L2 and L3, and latches the number of connected active speakers (3); L1 emits a detection signal of frequency f2 via S11 and S12, disabling the reception of M11 and M12, while M21, M22, M31, and M32 receive the detection signal; L2 The processor built into L3 determines its position relative to L1 as right based on the time difference of the detection signals received by M21, M22, M31, and M32. L2 and L3 both determine their positions relative to L1 as right. L2 sends a detection signal at frequency f2 through S21 and S22, disabling the reception of M21 and M22, while M11, M12, M31, and M32 receive the detection signal. The processors built into L1 and L3 determine their positions relative to L1 as right based on the time difference of the detection signals received by M11, M12, M31, and M32. Based on the time difference between the signals, L1 determines its position relative to L2 as left, and L3 determines its position relative to L2 as right. L3 sends a detection signal at frequency f2 through S31 and S32, disables the receivers of M31 and M32, and M11, M12, M21, and M22 receive the detection signal. The processors built into L1 and L2 determine L1's position relative to L3 as left based on the time difference between the detection signals received by M11, M12, M21, and M22, and L2's position relative to L3 as right. L3 is positioned on the left; L1 was judged as left twice in the above tests, L2 was judged as left once and right once in the above tests, and L3 was judged as right twice in the above tests. Therefore, the active speakers are arranged from left to right as L1, L2, and L3. Since there are 3 active speakers, which is an odd number, the leftmost speaker L1 is set as the left channel of the entire speaker system, the rightmost speaker L3 is set as the right channel of the entire speaker system, and the middle speaker L2 can be freely set to stereo playback or low-frequency enhancement.

[0033] Please see Figure 3This is a schematic diagram illustrating the operation of a multi-cooperative working method for active speakers as described in this invention when six active speakers are connected. The diagram shows active speaker L1 including a left channel microphone M11, a right channel microphone M12, a left channel speaker S11, and a right channel speaker S12; active speaker L2 including a left channel microphone M21, a right channel microphone M22, a left channel speaker S21, and a right channel speaker S22; active speaker L3 including a left channel microphone M31, a right channel microphone M32, a left channel speaker S31, and a right channel speaker S32; active speaker L4 including a left channel microphone M41, a right channel microphone M42, a left channel speaker S41, and a right channel speaker S42; active speaker L5 including a left channel microphone M51, a right channel microphone M52, a left channel speaker S51, and a right channel speaker S52; and active speaker L6 including a left channel microphone M61, a right channel microphone M62, a left channel speaker S61, and a right channel speaker S62. Let L2 be the main active speaker. It sends a wireless communication signal with a special protocol via its built-in processor, which is the connection invitation signal. L1, L3, L4, L5, and L6 reply with their own wireless communication signals with the same special protocol. L2 establishes a communication channel with L1, L3, L4, L5, and L6, and latches the number of connected active speakers (6). L1 sends a detection signal at frequency f2 via S11 and S12, disabling the receivers of M11 and M12. M21, M22, M31, M32, M41, M42, M51, M52, M61, and M62 receive the detection signal. Based on the time difference between the received detection signals from M21, M22, M31, M32, M41, M42, M51, M52, M61, and M62, the processors of L2, L3, L4, L5, and L6 determine that L2's position relative to L1 is to the right, and L3 determines... L1 determines its position relative to L1 as right. L4 determines its position relative to L1 as right. L5 determines its position relative to L1 as right. L6 determines its position relative to L1 as right. L2 sends a detection signal with frequency f2 through S21 and S22, and turns off the reception of M21 and M22. M11, M12, M31, M32, M41, M42, M51, M52, M61, and M62 receive the detection signal. The processors built into L1, L3, L4, L5, and L6 determine their positions relative to L2 as left, right, right, and right respectively based on the time difference between the detection signals received by M11, M12, M31, M32, M41, M42, M51, M52, M61, and M62.L3 sends a detection signal at frequency f2 through S31 and S32, disables the reception of M31 and M32, and M11, M12, M21, M22, M41, M42, M51, M52, M61, and M62 receive the detection signal. The processors built into L1, L2, L4, L5, and L6 determine their relative positions to L3 based on the time difference between the detection signals received by M11, M12, M21, M22, M41, M42, M51, M52, M61, and M62. L1 determines its position relative to L3 as left, L2 determines its position relative to L3 as left, L4 determines its position relative to L3 as right, L5 determines its position relative to L3 as right, and L6 determines its position relative to L3 as right. L4 sends a detection signal at frequency f2 through S41 and S42, disables the reception of M41 and M42, and M11, M12, M21, M22, M31, M32, M51, M52, M61, and M62 receive the detection signal. The processors built into L1, L2, L3, L5, and L6 determine their positions relative to L4 as left, L2, L3, L5, and L6 based on the time difference between the detection signals received by M11, M12, M21, M22, M31, M32, M51, M52, M61, and M62. L5 sends a detection signal at frequency f2 through S51 and S52, disables the reception of M51 and M52, and M11, M12, M21, M22, M31, M32, M41, M42, M61, and M62 receive the detection signal. The processors built into L1, L2, L3, L4, and L6 determine their positions relative to L5 as left, L2, L3, L4, and L6 based on the time difference between the detection signals received by M11, M12, M21, M22, M31, M32, M41, M42, M61, and M62. L1 determines its position relative to L5 as left, L2 determines its position relative to L5 as left, L3 determines its position relative to L5 as left, L4 determines its position relative to L5 as left, and L6 determines its position relative to L5 as right. L6 sends a detection signal at frequency f2 through S61 and S62, disables the reception of M61 and M62, and M11, M12, M21, M22, M31, M32, M41, M42, M51, and M52 receive the detection signal. The processors built into L1, L2, L3, L4, and L5 determine their relative positions to L6 based on the time difference between the detection signals received by M11, M12, M21, M22, M31, M32, M41, M42, M51, and M52. L1 determines its position relative to L6 as left, L2 determines its position relative to L6 as left, L3 determines its position relative to L6 as left, L4 determines its position relative to L6 as left, and L5 determines its position relative to L6 as right.In the above tests, L1 was judged as left in all 5 tests; L2 was judged as left 4 times and right 1 time in 5 tests; L3 was judged as left 3 times and right 2 times in 5 tests; L4 was judged as left 2 times and right 3 times in 5 tests; L5 was judged as left 1 time and right 4 times in 5 tests; and L6 was judged as right in all 5 tests. Therefore, the active speakers are arranged from left to right as L1, L2, L3, L4, L5, and L6. Since there are 6 active speakers, which is an even number, L1, L2, and L3 are set as the left channel of the entire speaker system, and L4, L5, and L6 are set as the right channel of the entire speaker system. To optimize the sound field, the left and right channel signals are divided into two frequency groups. The low frequency of the left channel is used as the input signal for L3, and the low frequency of the right channel is used as the input signal for L4. The high frequency of the left channel is used as the input signal for L1 and L2, and the high frequency of the right channel is used as the input signal for L5 and L6.

[0034] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for multiple active speakers to work collaboratively, wherein the number of active speakers is N, characterized in that, include: Step S1: The main active speaker sends a connection invitation signal; Step S2: The connected active speaker replies with the connection invitation signal; Step S3: The main active speaker establishes a communication channel with the active speakers to be connected, and latches the number N of active speakers to be connected. Step S4: The interconnected active speakers sequentially emit detection signals individually, while the active speakers that do not emit the detection signals receive the detection signals through the left and right channel microphones. In step S5, the active speaker that did not emit the detection signal in step S4 determines its position relative to the active speaker that emitted the detection signal based on the received detection signal. Step S6: Based on the number N of connected active speakers latched in step S3 and the relative positions of the active speakers in step S5, the input signal is divided into frequencies and sent to each active speaker to complete the channel setup. In step S4, the interconnected active speakers sequentially and individually emit the detection signal, which is a detection signal with a specific frequency of f2 emitted through their built-in speakers; the left and right channel microphones of the active speakers that do not emit the detection signal will simultaneously receive the detection signal, while the active speakers that emit the detection signal will turn off their own microphones and not receive the signal. In step S5, after the active speaker that does not emit the detection signal receives the detection signal through the left and right channel microphones, its built-in processor determines its position relative to the active speaker that emitted the detection signal as left or right based on the time difference between the detection signals received by the left and right channel microphones; and each active speaker will perform N-1 detections. In step S6, the active speakers are arranged in a one-dimensional array. The leftmost speaker, in step S5, is consistently positioned to the left relative to the active speaker emitting the detection signal in N-1 consecutive judgments. The second speaker, in step S5, is positioned to the left relative to the active speaker emitting the detection signal in N-2 consecutive judgments, and to the right relative to the active speaker emitting the detection signal in the first judgment, and so on. The sequence of judgments based on the speaker's position relative to the active speaker emitting the detection signal being left is... The system sorts the speakers from largest to smallest to determine the one-dimensional position of all connected active speakers. The same applies to the right side, automatically determining the position of all active speakers. When N=2k, where k is a positive integer, the left k active speakers are set as the left channel and the right k active speakers are set as the right channel. When N=2k+1, where k is a positive integer, the left k active speakers are set as the left channel and the right k active speakers are set as the right channel. The channel configuration of the (k+1)th active speaker from the left is set manually.

2. The multi-cooperative operation method for an active speaker as described in claim 1, characterized in that, In step S1, the connection invitation signal emitted by the main active speaker is a wireless signal. It can emit a signal of a specific frequency f1 through its own speaker, or it can send a wireless communication signal with a special protocol through its built-in processor. In step S2, the connection invitation signal replied by the connected active speaker is a wireless communication signal with a special protocol sent through its built-in processor.

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