TWI824263B - Electronic device and operation method thereof - Google Patents

Abstract

An electronic device including a body, an input module, a sound receiving module and a processing module is provided. The input module is disposed at the body and configured to generate a switching signal. The sound receiving module is disposed at the body and configured to provide a plurality of sound receiving modes. The sound receiving module has multiple sets of microphones. Each set of microphones has multiple directional. The processing module is disposed at the body and electrically coupled to the input module and the sound receiving module. The processing module stores a control table. The processing module is adapted to compare the control table to generate a comparison result according to the switching signal. The processing module is adapted to generate a switching instruction for controlling one of the plurality of sound receiving modes according to the comparison result. The processing module is adapted to switch the directional of each set of microphones according to the switching instruction. An operation method is provided.

Description

Electronic device and method of operating the same

The present invention relates to an electronic device and an operating method, and in particular, to an electronic device and an operating method of the electronic device.

Laptop computers have become an indispensable tool for modern people because of their multitasking capabilities, high computing performance, and portability. Generally speaking, laptops have built-in microphones for users to use for video conferencing, voice assistants, or game live streaming. However, existing notebook computers have the disadvantage of poor sound reception.

The invention provides an electronic device and an operating method thereof, which have excellent sound collection effect.

The electronic device of the present invention includes a body, an input module, a radio module and a processing module. The input module is disposed on the machine body and used to generate a switching signal. The radio module is installed on the body to provide multiple radio modes and has multiple sets of microphones. Individual microphones have multiple directivities. The processing module is installed on the body, and Electrically coupled to the input module and the radio module. The processing module stores a control table. The processing module is adapted to compare the control table according to the switching signal to generate a comparison result. The processing module is adapted to generate a switching instruction for controlling one of the radio modes according to the comparison result. The processing module is adapted to switch the directivity of these microphones according to the switching command.

The operation method of the present invention is suitable for an electronic device. The electronic device includes an input module, a radio module and a processing module. The radio module has multiple sets of microphones. Individual microphones have multiple directivities. The radio module is suitable for providing multiple radio modes. The processing module stores a control table, and the processing module is electrically coupled to the input module and the radio module. The operation method includes the input module generating a switching signal. The processing module compares the control table according to the switching signal to generate a comparison result. The processing module generates a switching command to control one of the plurality of radio modes according to the comparison result. The processing module switches the directivity of these microphones according to the switching instructions.

In an embodiment of the present invention, the above-mentioned electronic device further includes a display, which is pivotally connected to the body.

In an embodiment of the present invention, each of the above-mentioned microphones includes an omnidirectional sound pickup unit and a directional sound pickup unit. The processing module is adapted to switch the enabling and disabling of each omnidirectional radio unit and each directional radio unit according to the switching command.

In an embodiment of the present invention, the above-mentioned microphones include a first group of microphones, a second group of microphones and a third group of microphones. The first group of microphones, the second group of microphones and the third group of microphones each include an omnidirectional radio unit and a directional radio unit. The processing module is adapted to switch the enabling and disabling of each omnidirectional radio unit and each directional radio unit according to the switching command.

In an embodiment of the present invention, the above-mentioned body includes a first side and a second side opposite to the first side. The first set of microphones is located on the first side. The second set of microphones and the third set of microphones are located on the second side, and the second set of microphones and the third set of microphones are respectively located on opposite sides of the second side. The directional sound pickup units of the first group of microphones, the second group of microphones, and the third group of microphones face the second side and converge toward one point.

In an embodiment of the present invention, the directional sound pickup units of the first group of microphones are directed toward a convergence point.

In an embodiment of the present invention, the directional sound pickup units of the second group of microphones and the third group of microphones are directed toward a convergence point.

In an embodiment of the present invention, the plurality of sound collection modes include a first mode. In the first mode, the omnidirectional sound pickup units of the first group of microphones are disabled, the directional sound pickup units of the first group of microphones are enabled, and the omnidirectional sound pickup units of the second group of microphones and the third group of microphones are disabled. Enabled, and the directional pickup units of the second set of microphones and the third set of microphones are disabled.

In an embodiment of the present invention, the plurality of sound collection modes include a second mode. In the second mode, the omnidirectional sound pickup units of the first group of microphones, the second group of microphones, and the third group of microphones are enabled, and the directional sound pickup units of the first group of microphones, the second group of microphones, and the third group of microphones are enabled. Disabled.

In an embodiment of the present invention, the plurality of sound collection modes include a third mode. In the third mode, the omnidirectional pickup units of the first group of microphones are enabled, and the directional pickup units of the first group of microphones are disabled, and the second group of microphones and the third group of microphones are disabled. The omnidirectional sound pickup units of the first group of microphones are disabled, and the directional sound pickup units of the second group of microphones and the third group of microphones are enabled.

In an embodiment of the present invention, the above-mentioned input module includes an encoder, a connecting rod, a roller and a micro switch. The encoder is installed on the machine body and electrically coupled to the processing module. The connecting rod is connected to the encoder. The roller is connected to the connecting rod and used to rotate the connecting rod. The micro switch is arranged on the body, located on the moving path of the roller, and is electrically coupled to the processing module.

In an embodiment of the present invention, the above-mentioned processing module includes a processing unit and a storage unit. The processing unit is arranged on the body and is electrically coupled to the input module and the radio module. The storage unit is disposed on the body, electrically coupled to the processing unit, and stores the control table.

In an embodiment of the present invention, the above-mentioned input module includes an encoder, a connecting rod, a roller and a micro switch. The steps of generating the switching signal from the input module include the roller driving the connecting rod to rotate so that the encoder generates a search signal; the roller driving the connecting rod to press the micro switch to generate a confirmation signal; the processing module determines the difference between the search signal and the confirmation signal. Whether the time interval is less than a specific time, if so, determine the confirmation signal as a switching signal.

Based on the above, in the electronic device and operating method of the present invention, the processing module compares the control table with the switching signal to generate a comparison result. The processing module then generates a switching instruction to control one of the multiple radio modes based on the comparison result. The final processing module switches the directivity of each set of microphones according to the switching command. In addition to enhancing the sound pickup effect, it can also provide a variety of different pickup modes to suit the different needs of the user. Radio needs.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings.

100: Electronic devices

110, 150: Body

111: First side

112:Second side

113:Third side

114:Fourth side

120:Input module

121:Encoder

122:Connecting rod

123:Roller

124: Micro switch

130: Radio module

131:The first set of microphones

131a: The first omnidirectional radio unit

131b: First directional radio unit

132: The second set of microphones

132a: The second omnidirectional radio unit

132b: Second directional radio unit

133: The third set of microphones

133a: The third omnidirectional radio unit

133b: The third directional radio unit

140: Processing module

141: Processing unit

142:Storage unit

A:Switch signal

A1: Search for signals

A2: Confirmation signal

B:Control table

C: switching command

P: convergence point

S210~S240, S211~S213: steps

FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of the electronic device of FIG. 1 in a first mode.

FIG. 3 is a schematic diagram of the electronic device of FIG. 1 in a second mode.

FIG. 4 is a schematic diagram of the electronic device of FIG. 1 in a third mode.

Figure 5 is an operation flow chart of an operation method according to an embodiment of the present invention.

FIG. 6 is a circuit block diagram of the electronic device of FIG. 1 .

FIG. 7 is an exploded schematic diagram of the input module of FIG. 1 .

8 and 9 are schematic diagrams of the working principle of the input module of FIG. 7 .

FIG. 10 is a flow chart for determining the switching signal in the operating method according to an embodiment of the present invention.

FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the present invention. FIG. 2 is a schematic diagram of the electronic device of FIG. 1 in a first mode. FIG. 3 is a schematic diagram of the electronic device of FIG. 1 in a second mode. FIG. 4 is a schematic diagram of the electronic device of FIG. 1 in a third mode. Figure 5 is an operation flow chart of an operation method according to an embodiment of the present invention. Figure 6 is Figure 1 Circuit block diagram of an electronic device. Please refer to FIGS. 1, 2, 3 and 4. The electronic device 100 is, for example, a notebook computer, including a body 110, an input module 120, a radio module 130 and a processing module 140.

Please refer to FIG. 1 and FIG. 6 , the input module 120 is disposed on the body 110 , and the input module 120 is used to generate a switching signal A.

The sound collection module 130 is disposed on the body 110, and the sound collection module 130 is used to provide multiple sound collection modes, such as the first mode shown in Figure 2, the second mode shown in Figure 3, and the third mode shown in Figure 4. The first mode is a video conference mode, the second mode is a voice assistant mode, and the third mode is a game live broadcast mode, but is not limited to this. The sound collection module 130 has multiple sets of microphones, such as a first set of microphones 131, a second set of microphones 132, and a third set of microphones 133. Each set of microphones has multiple directivities. The types of directivity that can be used in the present invention include omnidirectional. (Omnidirectional), cardioid (Cardioid), hypercardioid (Hypercardioid), shotgun (Shotgun) or bi-directional (Bi-directional), but the present invention is not limited thereto. In this embodiment, the processing module 140 may include, for example, one or more central processing units (CPUs), microprocessors (Microprocessor Control Units, MCUs) or field programmable gate arrays (Field Programmable Gate Arrays). , FPGA) and the like, but the present invention is not limited to this.

The processing module 140 is disposed on the body 110 , and the processing module 140 is electrically coupled to the input module 120 and the radio module 130 . The processing module 140 stores a control table B. Specifically, the processing module 140 includes a processing unit 141 and a storage unit 142. The processing unit 141 may be a central processing unit, and the storage unit 142 may be a hard disk or cache memory, and the invention is not limited thereto. The processing unit 141 is disposed on the body 110 , and the processing unit 141 is electrically coupled to the input module 120 and the radio module 130 . The storage unit 142 is provided on the body 110 . The storage unit 142 is electrically coupled to the processing unit 141, and the storage unit 142 stores the control table B.

Please refer to Figures 1, 2, 5 and 6. The operation method applicable to the electronic device 100 includes step S210: the input module 120 generates a switching signal A. In step S220: the processing module 140 compares the control table B according to the switching signal A to generate a comparison result. In step S230: the processing module 140 generates a switching command C that controls one of the plurality of sound collection modes according to the comparison result. In step S240: the processing module 140 switches the directivity of each group of microphones according to the switching command C.

Furthermore, each set of microphones includes an omnidirectional sound pickup unit and a directional sound pickup unit. The processing module 140 can switch the enablement (Enable) and disablement (Disable) of the omnidirectional sound pickup unit and the directional sound pickup unit of each group of microphones according to the switching command C. Furthermore, the first group of microphones 131 includes a first omnidirectional sound collecting unit 131a and a first directional sound collecting unit 131b, and the second group of microphones 132 includes a second omnidirectional sound collecting unit 132a and a second directional sound collecting unit 132a. The third microphone group 133 includes a third omnidirectional sound collecting unit 133a and a third directional sound collecting unit 133b. The processing module 140 switches the enabling and disabling of the omnidirectional sound collecting units and the directional sound collecting units of the first group of microphones 131 , the second group of microphones 132 and the third group of microphones 133 according to the switching command C.

In this embodiment, the first directional sound collecting unit 131b, the second directional sound collecting unit 132b and the third directional sound collecting unit 133b adopt gun-type directivity, but are not limited to this.

Referring to FIG. 1 , the electronic device 100 further includes a body 150 pivotally connected to the body 110 . The body 150 is, for example, a monitor of a notebook computer. The body 110 includes a first side 111 and a second side 112 opposite to the first side 111, respectively connected to a third side 113 and a fourth side 114 between the first side 111 and the second side 112, wherein The first side 111 , the fourth side 114 , the second side 112 and the third side 113 are sequentially connected around each other, and the first side 111 is relatively adjacent to the body 150 . The first set of microphones 131 is located on the first side 111 . The second set of microphones 132 is located on the second side 112 and the third side 113 , and the third set of microphones 133 is located on the second side 112 and the fourth side 114 . The first directional sound collecting unit 131b of the first group of microphones 131, the second directional sound collecting unit 132b of the second group of microphones 132, and the third directional sound collecting unit 133b of the third group of microphones 133 face the second side 112 and converge toward a The point P converges, where the convergence point P is actually the position of the user when using the electronic device 100 . In other words, the gun-shaped first directional sound collecting unit 131b, the second directional sound collecting unit 132b and the third directional sound collecting unit 133b point toward the user to facilitate sound collection.

Table 1 provides a control table for switching between the omnidirectional sound collecting units and the directional sound collecting units of the first group of microphones 131 , the second group of microphones 132 and the third group of microphones 133 . Please refer to Table 1, Figure 1 and Figure 2. In the first mode, the first omnidirectional sound collecting unit 131a of the first group of microphones 131 is disabled, and the first directional sound collecting unit 131b of the first group of microphones 131 is disabled. Enablement, second set of microphones 132 The second omnidirectional sound collecting unit 132a and the third omnidirectional sound collecting unit 133a of the third group of microphones 133 are enabled, and the second directional sound collecting unit 132b of the second group of microphones 132 and the third group of microphones 133 The three-directional radio unit 133b is disabled.

When using the first mode for a video conference, the first set of microphones 131 receives the first sound through the first directional sound collection unit 131b, analyzes the first user's voice and the first environmental noise through software, and filters out high-frequency, The first environmental noise is filtered out by using low frequency and repetitive frequency, and the first user's voice is directionally enhanced by enhancing the intermediate frequency. In addition, the second omnidirectional sound collection unit 132a of the second group of microphones 132 and the third omnidirectional sound collection unit 133a of the third group of microphones 133 respectively receive the second sound and the third sound, and analyze the second user's voice through software. , the second environmental noise, the third user's voice and the third environmental noise, and omnidirectionally weaken the first environmental noise and the second environmental noise by filtering high frequencies, low frequencies, and repetitive frequencies. Therefore, in the first mode, the electronic device 100 can enhance the sound collection effect on the user and reduce environmental noise.

Please refer to Table 1, Figure 1 and Figure 3. In the second mode, the first omnidirectional sound collecting unit 131a of the first group of microphones 131, the second omnidirectional sound collecting unit 132a of the second group of microphones 132 and the third group The third omnidirectional radio unit of microphone 133 133a is enabled, and the first directional sound collection unit 131b of the first group of microphones 131, the second directional sound collection unit 132b of the second group of microphones 132, and the third directional sound collection unit 133b of the third group of microphones 133 are disabled. .

When using the voice assistant in the second mode, the first omnidirectional sound collection unit 131a of the first group of microphones 131, the second omnidirectional sound collection unit 132a of the second group of microphones 132, and the third omnidirectional sound collection unit of the third group of microphones 133 After receiving the first sound, the second sound and the third sound respectively, the permanent sound collecting unit 133a analyzes the first user's voice, the first environmental noise, the second user's voice, the second environmental noise and the third user's voice through software. and the third environmental noise, and omnidirectionally enhances the first user's voice, the first environmental noise, the second user's voice, the second environmental noise, and the third user by enhancing high frequencies, low frequencies, repetition frequencies, and intermediate frequencies. speech and third environmental noise. Therefore, in the second mode, the electronic device 100 can increase the sound collection range to avoid missing the user's voice.

Please refer to Table 1, Figure 1 and Figure 4. In the third mode, the first omnidirectional sound collecting unit 131a of the first group of microphones 131 is enabled, and the first directional sound collecting unit 131b of the first group of microphones 131 is enabled. Disabled, the second omnidirectional sound collecting unit 132a of the second group of microphones 132 and the third omnidirectional sound collecting unit 133a of the third group of microphones 133 are disabled, and the second directional sound collecting unit 132b of the second group of microphones 132 is disabled. And the third directional sound collecting unit 133b of the third group of microphones 133 is enabled.

When using the third mode for game live broadcast, after receiving the first sound, the first omnidirectional sound pickup unit 131a of the first set of microphones 131 analyzes the first user's voice and the first environmental noise through software, and filters out the high-frequency , low frequency, repetition frequency The way omnidirectionally attenuates first ambient noise. In addition, the second directional sound collecting unit 132b of the second group of microphones 132 and the third directional sound collecting unit 133b of the third group of microphones 133 respectively receive the second sound and the third sound, and analyze the second user's voice and the third sound through software. The second environmental noise, the third user's voice and the third environmental noise, and enhance the directivity of the second user's voice and the third user's voice by enhancing the mid-frequency method. In the first mode, the electronic device 100 can enhance the effect of collecting sound for the user and reduce the knocking sound of the keyboard and the like.

FIG. 7 is an exploded schematic diagram of the input module of FIG. 1 . 8 and 9 are schematic diagrams of the working principle of the input module of FIG. 7 . Please refer to Figures 1, 7, 8 and 9. The input module 120 includes an encoder 121, a connecting rod 122, a roller 123 and a micro switch 124. The encoder 121 is disposed on the body 110 , and the encoder 121 is electrically coupled to the processing module 140 . The connecting rod 122 is connected to the encoder 121 . The roller 123 is connected to the connecting rod 122, and the connecting rod 122 is used to rotate the connecting rod 122. The micro switch 124 is provided on the body 110 . The micro switch 124 is located on the moving path of the roller 123, and the micro switch 124 is electrically coupled to the processing module 140, wherein a spring (not shown) is provided inside the micro switch 124.

FIG. 10 is a flow chart for determining the switching signal in the operating method according to an embodiment of the present invention. Please refer to Figures 1, 6, 8, 9 and 10. Step S210 of the input module 120 generating the switching signal A includes step S211: the roller 123 drives the connecting rod 122 to rotate so that the encoder 121 generates a search signal A1. . Step S212: The roller 123 drives the connecting rod 122 to press the micro switch 124 to generate a confirmation signal A2. Step S213: The processing module 140 determines the time between the search signal A1 and the confirmation signal A2. Whether the interval is less than a specific time, if so, it is determined that the confirmation signal A2 is the switching signal A, where the specific time is, for example, 0.5 seconds. In other words, if the roller 123 is simply rotated or the micro switch 124 is simply pressed, the processing module 140 will not determine that there is a switching signal A. This can prevent the user from accidentally touching the roller 123 or the micro switch 124 and avoid misoperation.

To sum up, in the electronic device and operating method of the present invention, the processing module compares the switching signal with the control table to generate a comparison result, and then controls the radio module to provide one of a plurality of radio modes based on the comparison result. Switching command, the final processing module switches the directivity of each set of microphones according to the switching command. In addition to enhancing the radio effect, it can also provide a variety of different radio modes to meet the different radio needs of users.

Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the appended patent application scope.

100: Electronic devices

110, 150: Body

111: First side

112:Second side

113:Third side

114:Fourth side

120:Input module

123:Roller

130: Radio module

131:The first set of microphones

131a: The first omnidirectional radio unit

131b: First directional radio unit

132: The second set of microphones

132a: The second omnidirectional radio unit

132b: Second directional radio unit

133: The third set of microphones

133a: The third omnidirectional radio unit

133b: The third directional radio unit

140: Processing module

141: Processing unit

142:Storage unit

P: convergence point

Claims (16)

An electronic device includes: a body; an input module disposed on the body for generating a switching signal; a radio module disposed on the body for providing multiple radio modes and having multiple sets of microphones, Each of the microphones has multiple directivities; and a processing module is disposed on the body, electrically coupled to the input module and the radio module, and stores a control table, wherein the processing module is adapted to operate according to The switching signal is compared with the control table to generate a comparison result, wherein the processing module is adapted to generate a switching instruction to control one of the radio modes according to the comparison result, wherein the processing module is adapted to According to the switching instruction, the directivity of the microphones is switched, wherein the microphones include a first group of microphones, a second group of microphones and a third group of microphones, the first group of microphones, the second group of microphones and the third group of microphones. Each of the three sets of microphones includes an omnidirectional sound pickup unit and a directional sound pickup unit, wherein the processing module is adapted to switch the enabling and activation of each omnidirectional sound pickup unit and each directional sound pickup unit according to the switching command. Disabled, wherein the body includes a first side and a second side opposite to the first side, the first set of microphones is located on the first side, the second set of microphones and the third set of microphones are located on the second side, and the second set of microphones and the third set of microphones are respectively located on the On opposite sides of the second side, the directional sound pickup units of the first group of microphones, the second group of microphones, and the third group of microphones face the second side and toward a convergence point. The electronic device as claimed in claim 1 further includes a display pivotally connected to the body. The electronic device of claim 1, wherein each microphone includes an omnidirectional sound pickup unit and a directional sound pickup unit, and the processing module is adapted to switch each of the omnidirectional sound pickup units and each of the omnidirectional sound pickup units according to the switching instruction. Enable and disable the directional radio unit. The electronic device according to claim 1, wherein the directional sound pickup unit of the first group of microphones faces a convergence point. The electronic device according to claim 1, wherein the directional sound pickup units of the second group of microphones and the third group of microphones are directed toward a convergence point. The electronic device according to claim 1, wherein the sound collection modes include a first mode, in the first mode, the omnidirectional sound collection unit of the first group of microphones is disabled, and the first group of microphones The directional sound pickup unit of the second group of microphones and the third group of microphones is enabled, and the directional sound pickup units of the second group of microphones and the third group of microphones are enabled Disabled. The electronic device according to claim 1, wherein the sound collection modes include a second mode, in the second mode, the omnidirectional properties of the first group of microphones, the second group of microphones and the third group of microphones The radio unit is enabled, and the first group The directional sound pickup units of the microphone, the second group of microphones, and the third group of microphones are disabled. The electronic device according to claim 1, wherein the sound collection modes include a third mode, in the third mode, the omnidirectional sound collection unit of the first group of microphones is enabled, and the first group of microphones The directional sound pickup unit of the second group of microphones and the third group of microphones is disabled, and the directional sound pickup units of the second group of microphones and the third group of microphones are disabled. Be enabled. The electronic device as claimed in claim 1, wherein the input module includes: an encoder, which is disposed on the body and electrically coupled to the processing module; a connecting rod connected to the encoder; and a roller, is connected to the connecting rod for rotating the connecting rod; and a micro switch is provided on the body, located on the moving path of the roller, and is electrically coupled to the processing module. The electronic device of claim 1, wherein the processing module includes: a processing unit disposed on the body and electrically coupled to the input module and the radio module; and a storage unit disposed on the The machine body is electrically coupled to the processing unit and stores the control table. An operating method suitable for an electronic device, wherein the electronic device includes an input module, a sound collection module and a processing module, wherein the sound collection module has multiple sets of microphones, each of the microphones has multiple directivities, and the sound collection module Module suitable for Multiple radio modes are provided. The processing module stores a control table. The processing module is electrically coupled to the input module and the radio module. The operation method includes: the input module generates a switching signal; The processing module compares the control table to generate a comparison result according to the switching signal; the processing module generates a switching instruction to control one of the plurality of radio modes according to the comparison result; and the processing module generates a switching instruction according to the switching Instructions to switch the directivity of the microphones, wherein the microphones include a first group of microphones, a second group of microphones and a third group of microphones, the first group of microphones, the second group of microphones and the third group of microphones Each includes an omnidirectional sound pickup unit and a directional sound pickup unit, wherein the processing module switches the enabling and disabling of each omnidirectional sound pickup unit and each directional sound pickup unit according to the switching command, wherein the body Comprising a first side and a second side opposite to the first side, the first group of microphones is located on the first side, the second group of microphones and the third group of microphones are located on the second side, and the second group of microphones is located on the first side. A set of microphones and the third set of microphones are respectively located on opposite sides of the second side, wherein the directional sound pickup units of the first set of microphones, the second set of microphones and the third set of microphones face the second side and towards a convergence point. The operation method according to claim 11, wherein each of the microphones includes an omnidirectional sound pickup unit and a directional sound pickup unit, wherein the processing module switches the respective microphones according to the switching instruction. The omnidirectional radio unit and the enabling and disabling of the directional radio unit. The operating method of claim 11, wherein the sound collection modes include a first mode, in which the omnidirectional sound collection unit of the first group of microphones is disabled, and the first group of microphones The directional sound pickup unit of the second group of microphones and the third group of microphones is enabled, and the directional sound pickup units of the second group of microphones and the third group of microphones are enabled Disabled. The operating method of claim 11, wherein the sound collection modes include a second mode, in which the omnidirectional properties of the first group of microphones, the second group of microphones and the third group of microphones The sound pickup unit is enabled, and the directional sound pickup units of the first group of microphones, the second group of microphones, and the third group of microphones are disabled. The operating method of claim 11, wherein the sound collection modes include a third mode, in the third mode, the omnidirectional sound collection unit of the first group of microphones is enabled, and the first group of microphones The directional sound pickup unit of the second group of microphones and the third group of microphones is disabled, and the directional sound pickup units of the second group of microphones and the third group of microphones are disabled. Be enabled. The operation method of claim 11, wherein the input module includes an encoder, a connecting rod, a roller and a micro switch, and the step of generating the switching signal by the input module includes: the roller drives the link The rod rotates to cause the encoder to generate a search signal; The roller drives the connecting rod to press the micro switch to generate a confirmation signal; and the processing module determines whether the time interval between the search signal and the confirmation signal is less than a specific time, and if so, determines that the confirmation signal is the switching signal. .

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