Sound receiving area indication system of microphone and microphone

Abstract

The invention relates to the technical field of microphones, and particularly provides a microphone reception area indication system and a microphone, a control system comprises a plurality of indication lamps, the plurality of indication lamps are annularly distributed on the microphone, and a microphone core of the microphone is located on the axis of an annular structure formed by the plurality of indication lamps; the control part is used for controlling at least part of the indicator lamp to emit light, and when the indicator lamp is controlled, the control part executes the following control method: acquiring an indication signal of the microphone, the indication signal comprising a sound receiving area of the microphone core; controlling the preset indicating lamp to emit light based on an indicating signal of the microphone, and enabling the indicating lamp which generates specific light to be located in a sound receiving area of the microphone core so as to indicate a pickup angle of the microphone core; the microphone identification mark is high in identifiability, and a user can easily identify the sound receiving area of the microphone without distracting attention.

Description

Technical Field

[0001] The present invention relates to the technical field of microphones, and in particular to a microphone sound receiving area indication system and a microphone. Background Art

[0002] Traditional microphones have a directional sound reception prompt structure. Generally speaking, this prompt structure is engraved on a conspicuous position of the microphone housing (top cover, side wall operating end surface). When the user uses it, the corresponding polarity pattern (cardioid, circular, double cardioid, etc.) can provide the user with the corresponding microphone direction, so that the user can carry out recording operations smoothly.

[0003] Most of the indicator patterns in the prior art are only engraved on the shell of the microphone. The patterns are small and are only designed for users to remember the microphone's sound pickup direction and select the sound pickup angle when using it for the first time. There is no obvious reminder function that can attract the user's attention. During the recording process, the user's eyes are generally focused on the screen. After using it for a period of time, it is easy to deviate from the optimal sound pickup angle corresponding to the microphone's direction, and it is necessary to readjust the sound pickup angle according to the direction pattern; small-volume indicator patterns require users to spend a certain amount of attention to search and focus, resulting in a decrease in user concentration, which is easy to affect the live broadcast effect, game experience, and recording continuity. Therefore, this application proposes a microphone sound pickup area indication system and a microphone. Summary of the invention

[0004] The object of the present invention is to provide a microphone sound receiving area indication system to solve the problem that the current microphone indication structure pattern is too small, difficult to be captured by the user's line of sight, and the indication effect is poor.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A microphone sound receiving area indication system, the system comprising:

[0007] A plurality of indicator lights, wherein the plurality of indicator lights are distributed in a ring shape on the microphone, and the microphone core of the microphone is located on the axis of the ring structure formed by the plurality of indicator lights;

[0008] The control unit is used to control at least part of the indicator lights to emit light. When controlling the indicator lights, the control unit executes the following control method:

[0009] Obtaining an indication signal of a microphone, wherein the indication signal includes a sound receiving area of ​​the microphone core;

[0010] The preset indicator light is controlled to emit light based on the indication signal of the microphone, and the indicator light that produces a specific light is located in the sound receiving area of ​​the microphone core to indicate the sound pickup angle of the microphone core.

[0011] Furthermore, when the indicator light is on, the color and / or brightness of the indicator light gradually weakens from the center line of the sound receiving area to both sides.

[0012] Furthermore, the system also includes:

[0013] A sensor module, used to obtain the relative position of the sound source and the microphone;

[0014] The alarm module is used to generate alarm information; wherein,

[0015] The control unit identifies the location of the sound source in real time when the microphone is working, and controls the alarm module to issue an alarm message after the sound source leaves the preset area.

[0016] Furthermore, the alarm module sends the alarm information to the user terminal.

[0017] Furthermore, the warning information is generated by the indicator light, and when the indicator light emits a warning light, the color of the light is different from the color used to indicate the sound receiving area.

[0018] Furthermore, the indicator lights are provided with two groups, one of which is used to indicate the microphone receiving area, and the other group is controlled by the alarm module to generate alarm lights when the sound source deviates from the receiving area.

[0019] Furthermore, the indicator lights for generating the warning light are distributed in a ring shape around the microphone, and the control unit controls the indicator lights in the same direction as the sound source to generate a color different from the warning light.

[0020] Furthermore, the sensor module includes:

[0021] A first distance sensor and a second distance sensor, used to measure the relative position of the microphone and the sound source;

[0022] The control section identifies relative positions of a sound source and a microphone based on measurement results of the first distance sensor and the second distance sensor.

[0023] Furthermore, the distances between adjacent indicator lights are the same.

[0024] The invention also discloses a microphone, including the sound receiving area indication system of the microphone.

[0025] In summary, the present invention has the following beneficial effects compared with the prior art:

[0026] The sound receiving area indication system of the microphone disclosed in the present invention generates lights through a plurality of annularly distributed indicator lights, so that the indicator lights that generate specific colors are located in the sound receiving area of ​​the microphone core, thereby indicating the sound receiving angle of the microphone core. Since the luminous indicator lights are highly recognizable, the user can easily identify the sound receiving area of ​​the microphone without diverting attention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the hardware part of the sound receiving area indication system of the microphone disclosed in an embodiment of the present invention.

[0028] Figure 2 It is a schematic diagram of a control method in a sound receiving area indication system of a microphone disclosed in an embodiment of the present invention.

[0029] Figure 3 This is a schematic diagram of the arrangement of indicator lights in one of the implementations of the sound receiving area indication system of the microphone disclosed in an embodiment of the present invention.

[0030] Figure 4 A schematic diagram of the positions of a sound receiving area and a sound source in a sound receiving area indication system of a microphone disclosed in an embodiment of the present invention.

[0031] Figure 5 This is a control logic diagram of one embodiment of an alarm module in a sound receiving area indication system of a microphone disclosed in an embodiment of the present invention.

[0032] Figure 6 This is a control logic diagram of one embodiment of an alarm module in a sound receiving area indication system of a microphone disclosed in an embodiment of the present invention.

[0033] Figure 7 It is a schematic diagram of the principle of detecting the sound source position by a sensor module in the sound receiving area indication system of a microphone disclosed in an embodiment of the present invention.

[0034] Reference numerals:

[0035] 10. indicator light; 20. microphone core; 30. light guide; 40. ring circuit board; 50. light shielding member; 60. sensor module. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] Example 1

[0038] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a microphone sound receiving area indication system, the system comprising a plurality of indicator lights 10 and a control unit, the plurality of indicator lights 10 are distributed in a ring shape on the microphone, and the microphone core 20 of the microphone is located on the axis of the ring structure formed by the plurality of indicator lights 10; the control unit is used to control at least part of the indicator lights 10 to emit light, wherein when controlling the indicator lights 10, the control unit executes the following control method:

[0039] Step A, obtaining an indication signal of a microphone, wherein the indication signal includes a sound receiving area of ​​the microphone core 20;

[0040] Step B: Based on the indication signal of the microphone, the preset indicator light 10 is controlled to light up, and the indicator light 10 that generates a specific light is located in the sound receiving area of ​​the microphone core 20 to indicate the sound pickup angle of the microphone core 20.

[0041] The microphone reception area indication system disclosed in the embodiment of the present invention is installed on the microphone. When the microphone is turned on, the control part (such as the control chip) in the microphone sends an indication signal to the control part, wherein the indication signal includes the sound pickup angle and azimuth of the microphone core 20. When the control part receives the indication signal, it controls part or all of the indicator lights 10 to light up based on the sound pickup angle and azimuth in the indication signal (wherein the positional relationship between the microphone core 20 and the indicator light 10 is stored in the control part, such as the address of the indicator light 10 facing the direction of the microphone core 20). When the indicator light 10 lights up, part of the indicator light 10 generates specific lights (such as specific brightness and color), and the indicator light 10 that generates the preset light is located in the area where the microphone core 20 has a good sound reception effect, which is used to indicate the sound pickup angle of the microphone core 20. When the user is looking for the sound reception area of ​​the microphone, he only needs to observe the lighted indicator light 10, and the lighted indicator light 10 has obvious observability, and the user can easily find the sound reception area of ​​the microphone.

[0042] Specifically, in the present embodiment, the indicator light 10 is an LED lamp bead, which can be a monochrome lamp bead or a multi-color lamp bead. The monochrome lamp bead can indicate the sound receiving area by emitting light, and the multi-color lamp bead can indicate the sound pickup angle by different colors.

[0043] Preferably, the plurality of indicator lights 10 are distributed at intervals, such as Figure 3 As shown, in this embodiment, a plurality of indicator lights 10 are equidistantly distributed on the annular structure, sixteen indicator lights 10 are provided, and the angle between each indicator light 10 is 22.5 degrees.

[0044] In this embodiment, the indicator light 10 and the control unit are both welded on the ring circuit. When the sound receiving area indication system is installed on the microphone, the ring circuit board 40 is fixed to the outer casing or top cover of the microphone by screws. The outer casing or top cover of the microphone is provided with a light-transmitting hole at the corresponding position of the indicator light 10, and the light emitted by the indicator light 10 is transmitted through the light-transmitting hole.

[0045] In this embodiment, two microphone cores 20 are provided, and the two microphone cores 20 are mirror-set, so that the sound receiving area of ​​the microphone is two mirror-set areas, which can increase the sound receiving area of ​​the microphone, and the indicator light 10 generates specific light in the sound receiving area of ​​each microphone core 20.

[0046] It should be noted that, in this application, the sound receiving area is an area with good sound receiving effect, such as Figure 3 and Figure 4 The area encircled by the dotted line.

[0047] In this embodiment, the control unit modulates the light or color of the indicator light 10 through a PWM modulator (pulse width modulation module). When controlling the indicator light 10, the PWM modulator controls the brightness and color of the indicator light 10 by changing the duty cycle of the pulse width modulation signal. When controlling the color, the currents of the red, green, and blue LEDs are adjusted respectively through three PWM channels to control the color of the indicator light 10.

[0048] The control unit is a microprocessor, such as a TMS320F2808 series microprocessor, which controls the driving circuit of the indicator light 10 to change the color and brightness of the indicator light 10 through a built-in ePWM (enhanced pulse width modulation module).

[0049] It should be noted that, in the present embodiment, when there are multiple microphone cores 20, such as the microphone in the present embodiment has two mirror-imaged microphone cores 20, the indication signal sent by the microphone to the control unit includes the working status of the microphone core 20, such as the working status of microphone core A and the working status of microphone core B, thereby indicating which indicator lights 10 the control unit should control to produce specific lights. For the microphone core 20 in the working state, the control unit controls the indicator lights 10 corresponding to the sound pickup angle to produce specific lights (such as green light). For the microphone core 20 in the non-working state, the control unit controls the indicator lights 10 corresponding to the sound pickup angle to produce non-specific lights (such as red light or no light).

[0050] In this embodiment, the control logic of the indicator light 10 is as follows: Figure 5As shown, taking a microphone with dual microphone cores 20 as an example, when the microphone is started, the user inputs a directional requirement (i.e., the number of microphone cores 20 started), and the control device of the microphone starts the microphone core 20 based on the directional requirement and sends an indication signal to the control unit, and the control unit controls the indicator light 10 to light up based on the indication signal, and the light-emitting states of the indicator light 10 are divided into the following four types:

[0051] The first type is to start only the microphone and not start the microphone core 20. At this time, the control unit controls the indicator light 10 to generate red light through the LED driving module;

[0052] The second method is to start only the A microphone core, and the control unit controls the indicator light 10 (i.e., LED RING1) corresponding to the A microphone core to emit light. At this time, the built-in LED driver module (in the form of software) of the control unit drives the PWM1 module (built-in / independent of the control unit) to work, and the PWM1 module sends a pulse signal to the driving circuit of the corresponding indicator light 10 (LED Chip), controlling the corresponding indicator light 10 to generate light of a preset color and / or intensity;

[0053] The third method is to start only the B microphone core, and the control unit controls the indicator light 10 (i.e., LED RING2) corresponding to the B microphone core to emit light. At this time, the built-in LED driver module (in the form of software) of the control unit drives the PWM2 module (built-in / independent of the control unit) to work, and the PWM2 module sends a pulse signal to the driving circuit of the corresponding indicator light 10 (LED Chip), controlling the corresponding indicator light 10 to generate light of a preset color and / or intensity;

[0054] The fourth type is to start microphone core A and microphone core B, and the control unit controls the indicator lights 10 (i.e., LEDRI NG2 and LEDRI NG2) corresponding to microphone core A and microphone core B to emit light. At this time, the built-in LED driver module (existing in the form of software) of the control unit drives the PWM1 module and the PWM2 module (built-in / independent of the PWM modulator of the control unit) to work, and the PWM1 module and the PWM2 module send pulse signals to the drive circuit of the corresponding indicator light 10 (LED Chip), controlling the corresponding indicator light 10 to generate light of preset color and / or intensity.

[0055] As a preferred implementation of this embodiment, when the indicator light 10 is emitting light, the color and / or brightness of the indicator light 10 gradually weakens from the center line of the sound receiving area to both sides;

[0056] like Figure 3As shown, the indicator light 10 at 0° in the figure is facing the microphone core 20, the indicator lights 10 at 45° on the left and right sides of the indicator light 10 at 0° and the indicator light 10 between the two produce specific lights, and the angle formed by the dot-dashed line is the sound pickup angle of the microphone core 20, and the brightness or color of the indicator lights 10 at 0°, 22.5° and 45° gradually weakens. Taking color as an example, the color of the indicator light 10 located in the sound receiving area is green, the color of the indicator light 10 located in the non-sound receiving area is red, the color of the indicator light 10 located at 0° is dark green, the color of the indicator light 10 located at 22.5° is green, and the color of the indicator light 10 located at 45° is light green.

[0057] As a preferred implementation in this embodiment, Figure 1 As shown, the sound receiving area indication system further includes a plurality of light guides 30, and the light guides 30 are correspondingly distributed outside the indicator light 10 to scatter the light of the indicator light 10 outside the microphone;

[0058] Specifically, in this embodiment, the light guide 30 is an annular transparent acrylic plate / glass, the outer side of the non-conductive area of ​​the light guide 30 reflects the light through a frosted structure, and the conductive area is a smooth surface, so that the light is transmitted from the conductive area. For example, the light guide 30 made of an acrylic plate has a spherical protrusion at the corresponding part of the outer indicator light 10, the spherical protrusion is a smooth structure, and the rest of the outer side is a frosted structure. The inner side of the light guide 30 is a smooth structure, and the light transmitted into the light guide 30 is transmitted to the outside through the spherical protrusion;

[0059] The light guide 30 is fixed to the microphone housing or the annular circuit board 40 by screws or gluing, and the spherical protrusion is located at the light transmission hole;

[0060] In this embodiment, the light guide member 30 may also be other structures, such as a light guide column structure, and each indicator light 10 corresponds to a light guide column.

[0061] As a preferred implementation in this embodiment, Figure 1 As shown, the sound receiving area indication system further includes a light blocking member 50 connected to the annular circuit board 40 / light guide member 30 / microphone, and the light blocking member 50 is at least partially located between two adjacent indicator lights 10 to isolate the lights of the indicator lights 10;

[0062] In this embodiment, the light blocking member 50 is an opaque structure, such as black rubber, sponge, plastic block, etc. The light blocking member 50 can be installed on the annular circuit board 40, and can also be installed on the light guide 30 and the microphone. As shown in the figure, the light blocking member 50 is installed on the annular circuit board 40, and the light blocking member 50 and the annular circuit board 40 can be fixed by screws or hot melt adhesive.

[0063] The light blocking member 50 may also be fixed to the light guide member 30 . For example, in other embodiments, the light guide member 30 is fixed to the inner side of the light guide member 30 by gluing. In this case, the light guide member 30 is ring-shaped.

[0064] When the light blocking member 50 is fixed to the microphone, the light guiding member 30 is a light guiding column, and the light blocking member 50 is fixed to the inner side of the microphone housing, such as the inner side of the microphone top cover, by gluing.

[0065] Example 2

[0066] As shown in the figure, as another embodiment of the present invention, Figure 1 As shown, the difference between this embodiment and embodiment 1 is that the sound receiving area indication system also includes a sensor module 60 and an alarm component, the sensor module 60 is used to obtain the location of the sound source, the control unit is electrically connected to the sensor module 60 to receive information from the sensor module 60, when the microphone is working, the control unit controls the sensor module 60 to obtain the location of the sound source in real time, when the sound source is in a non-sound receiving area, the control unit controls the alarm component to sound an alarm.

[0067] like Figure 1 As shown, the sensor module 60 and the alarm component are located on the ring circuit board 40. The sensor module 60 is electrically connected to the control unit through the conductive strips on the ring circuit. The sensor module 60 identifies the position of the sound source. When the sound source is located in a non-receiving area, such as too far away from the microphone, deviating from the receiving area of ​​the microphone, or too close to the microphone, the control unit sends an alarm message through the alarm component.

[0068] Specifically, Figure 4 As shown, in this embodiment, the sensor module 60 can be a distance sensor or an image acquisition device. When the sensor module 60 is a distance sensor, the distance sensor can be a sound wave distance sensor, an infrared position sensor, etc. When the user uses the microphone, the user is closest to the microphone, and the distance sensor can detect the distance between the user and the microphone. When the distance between the user and the microphone exceeds a preset value (the sound is too small) or is lower than a preset value (the microphone is exploded) or the user is not detected (the microphone is not used), the control unit generates an alarm message through the alarm component.

[0069] When the sensor module 60 is an image acquisition device, each sensor module 60 is provided with two image acquisition devices, so that the sensor module 60 can measure the position by binocular vision. The method of measuring the position by binocular vision is a prior art and will not be described in detail here. ；

[0070] Preferably, when binocular vision is used for position measurement, the control unit also obtains the user's facial information through the sensor module 60, and obtains the user's head deflection information by identifying the facial information. When the user's head deflection angle exceeds a preset value, the control unit generates an alarm message through an alarm component. The method for identifying the user's head deflection angle is a prior art. For example, in the prior art, the head posture angle is obtained through a facial image, that is, the three Euler angles of pitch, yaw and roll are calculated, and then the user's head deflection angle is determined;

[0071] In this embodiment, the purpose of determining the head deflection angle is to determine whether the user's mouth deviates from the sound receiving area.

[0072] In this embodiment, the number of the position acquisition components is the same as the number of the microphone cores 20 , that is, each microphone core 20 corresponds to a sensor module 60 .

[0073] Preferably, the sensor module 60 includes a first distance sensor and a second distance sensor, which are used to measure the relative position of the microphone and the sound source; the control unit identifies the relative position of the sound source and the microphone based on the measurement results of the first distance sensor and the second distance sensor;

[0074] In this embodiment, if Figure 7 As shown, after the first sensor and the second sensor are installed, the distance (L1) between the first sensor and the second sensor, the distance (L2) between the first distance sensor and the microphone core 20, and the distance (L3) between the second distance sensor and the microphone core 20 are known quantities. At the same time, the angles a2 and a3+a4 can be calculated by trigonometric function formulas. When it is necessary to detect the position of the sound source from the microphone core 20, the detection value of the first distance sensor is r1, and the detection value of the second distance sensor is r2. The angle a2 can be calculated through the triangle formed by the sound source and the first distance sensor and the second distance sensor. Then, the distance h and the angle a3 between the sound source and the microphone core 20 can be calculated through the triangle formed by the sound source and the first distance sensor and the microphone core 20. Since the value of a3+a4 is known, the offset angle a4 of the sound source can be calculated, thereby obtaining the relative position of the sound source and the microphone core 20.

[0075] It should be noted that when using the microphone, the user needs to be close to the microphone. At this time, the user is closest to the microphone.

[0076] As a preferred implementation in this embodiment, the alarm module is an AP module. When an alarm message is generated, the alarm module sends the alarm message to user terminals, such as smart watches, computing devices independent of microphones (laptops, tablets, etc.);

[0077] such as Figure 5 As shown, in the control logic diagram of the alarm message in this embodiment, taking the microphone with a dual microphone core 20 structure as an example, when the sensor module 60 and the alarm module are working, the control unit controls the sensor driving module to start the sensor module 60 of the corresponding microphone core 20 based on the indication signal. The sensor module 60 detects the position of the sound source. The sensor module 60 sends the detection result to the sound source position comparison module located in the control unit (existing in the control unit in the form of a program). The sound source comparison module compares whether the sound source is within the pointing range (within the preset sound collection area of the microphone core 20). If it is within the pointing range, the user terminal (terminal module) stands by; if the sound source is not within the pointing range, the sound source comparison module sends the analysis result to the signal prompt module (existing in the control unit in the form of a program). The signal prompt module sends the prompt signal to the AP module, and the AP module sends the prompt signal to the user terminal, and the user terminal displays the prompt message.

[0078] Embodiment 3

[0079] As one of the embodiments of the present invention, the difference between this embodiment and Embodiment 2 is that the alarm message is generated by the indicator light 10, that is, the control structure of the alarm module and the indicator light 10 (the PWM modulator in Embodiment 1) is the same structure. When the indicator light 10 emits an alarm light, the light color is different from the color used to indicate the sound collection area.

[0080] In this embodiment, the control logic of the alarm module Figure 6 As shown, taking the microphone with a dual microphone core 20 structure as an example, when the sensor module 60 and the alarm module are working, the control unit controls the sensor driving module to start the sensor module 60 of the corresponding microphone core 20 based on the indication signal. The sensor module 60 detects the position of the sound source. The sensor module 60 sends the detection result to the sound source position comparison module located in the control unit. The sound source comparison module compares whether the sound source is within the pointing range. If it is within the pointing range, the control unit controls the corresponding PWM modulator according to the working state of the microphone core 20 to control the corresponding indicator light 10 to generate light with a preset color and preset brightness.

[0081] In this embodiment, one or two groups of the indicating lights 10 are provided. When one group of the indicating lights 10 is provided, during an alarm, the color of the indicating light 10 is different from the color for indicating the pickup angle. For example, if the light color for indicating the pickup angle is green, the light color for indicating the alarm information is red light;

[0082] When two groups of the indicating lights 10 are provided, one group is used to indicate the microphone sound pickup area, and the other group is controlled by the alarm module to generate alarm lights when the sound source deviates from the sound pickup area. The two groups of the indicating lights 10 are arranged in parallel and have the same structure;

[0083] In this embodiment, the structures and distributions of the two groups of the indicating lights 10 are the same. The difference is that one group is used to display the pickup angle, and the other group is used to display the alarm lights;

[0084] Preferably, the indicating lights 10 for generating alarm lights are annularly distributed in the circumferential direction of the microphone, and the control unit controls the indicating lights 10 in the same direction as the sound source to generate a color different from the alarm lights;

[0085] Specifically, in this embodiment, when the alarm light is yellow, when the distance and deviation angle of the sound source are obtained, the control unit controls the indicating lights 10 in the direction of the sound source to generate white light.

[0086] Embodiment 4

[0087] The present invention also discloses a microphone, which includes the sound pickup area indicating system of any one of the microphones in Embodiment 1, Embodiment 2 or Embodiment 3. The sound pickup area indicating system is fixed to the inner side of the microphone by means of gluing or screw connection, and the power supply structure of the microphone supplies power to the sound pickup area indicating system.

[0088] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms of "a", "the" and "said" used in the present invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0089] It should be understood that although the terms first, second, third, etc. may be used in the present invention to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to a determination".

[0090] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A microphone sound receiving area indication system, characterized in that: The system comprises: A plurality of indicator lights, wherein the plurality of indicator lights are distributed in a ring shape on the microphone, and the microphone core of the microphone is located on the axis of the ring structure formed by the plurality of indicator lights; The control unit is used to control at least part of the indicator lights to emit light. When controlling the indicator lights, the control unit executes the following control method: Obtaining an indication signal of a microphone, wherein the indication signal includes a sound receiving area of ​​the microphone core; The preset indicator light is controlled to emit light based on the indication signal of the microphone, and the indicator light that produces a specific light is located in the sound receiving area of ​​the microphone core to indicate the sound pickup angle of the microphone core.

2. The microphone sound receiving area indication system according to claim 1, characterized in that: When the indicator light is on, the color and / or brightness of the indicator light gradually decreases from the center line of the sound receiving area to both sides.

3. The microphone sound receiving area indication system according to claim 1 or 2, characterized in that: The system further comprises: A sensor module, used to obtain the relative position of the sound source and the microphone; The alarm module is used to generate alarm information; wherein, The control unit identifies the location of the sound source in real time when the microphone is working, and controls the alarm module to issue an alarm message after the sound source leaves the preset area.

4. The microphone sound receiving area indication system according to claim 3, characterized in that: The alarm module sends the alarm information to the user terminal.

5. The microphone sound receiving area indication system according to claim 3, characterized in that: The warning information is generated by the indicator light. When the indicator light emits a warning light, the color of the light is different from the color used to indicate the sound receiving area.

6. The microphone sound receiving area indication system according to claim 5, characterized in that: The indicator lights are provided in two groups, one of which is used to indicate the microphone sound receiving area, and the other group is controlled by the alarm module to generate alarm lights when the sound source deviates from the sound receiving area.

7. The microphone sound receiving area indication system according to claim 5, characterized in that: The indicator lights for generating the warning light are distributed in a ring shape around the microphone, and the control unit controls the indicator lights in the same direction as the sound source to generate a color different from the warning light.

8. The microphone sound receiving area indication system according to claim 4, characterized in that: The sensor module comprises: A first distance sensor and a second distance sensor, used to measure the relative position of the microphone and the sound source; The control section identifies relative positions of a sound source and a microphone based on measurement results of the first distance sensor and the second distance sensor.

9. The microphone sound receiving area indication system according to claim 1 or 2, characterized in that: The distances between adjacent indicator lights are the same.

10. A microphone, characterized in that: A sound receiving area indication system comprising the microphone described in any one of claims 1-9.

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