Automatic Door Sound Control System and Automatic Door Sound Control Method

Abstract

The present application discloses an automatic door sound control system and an automatic door sound control method. The automatic door sound control system includes a sound detection device, a storage device, a first judgment circuit, a second judgment circuit, and a control circuit. The sound detection device detects the sound signal of the sound source. The storage device includes a voiceprint database, and the voiceprint database includes a plurality of reference voiceprint features. The first judgment circuit is electrically connected to the storage device and the sound detection device. The first judgment circuit analyzes the voiceprint features of the sound signal and compares the voiceprint features with the reference voiceprint features. The second judgment circuit is electrically connected to the first judgment circuit and the control circuit. The second judgment circuit judges whether the moving speed of the sound source is within the reference speed range according to the frequency change of the sound signal that conforms to at least one reference voiceprint feature. When the moving speed of the sound source is within the reference speed range, the control circuit controls the automatic door to be in an open state.

Description

Technical Field

[0001] The present disclosure relates to a sound control system and a sound control method, and particularly to a sound control system and a sound control method for an automatic door. Background Art

[0002] Currently, the types of automatic doors often used on the market include, for example, radar induction automatic doors and infrared induction automatic doors.

[0003] Generally, in a large shopping mall, there are a large number of people and frequent movements. If a radar induction automatic door is used in a large shopping mall, due to the high sensitivity of the radar module, it is very easy to misjudge and cause the automatic door to open and close frequently. If an infrared induction automatic door is used in a large shopping mall, although the sensitivity of the infrared module is lower than that of the radar module, since infrared rays will be absorbed by objects of specific materials, misjudgment is also likely to occur. Summary of the Invention

[0004] The technical problem to be solved by the present disclosure is to provide an automatic door sound control system and an automatic door sound control method in view of the deficiencies of the prior art.

[0005] To solve the above technical problems, one of the technical solutions adopted by the present disclosure is to provide an automatic door sound control system. The automatic door sound control system includes a sound detection device, a storage device, a first judgment circuit, a second judgment circuit, and a control circuit. The sound detection device is used to detect the sound signal of the sound source. The storage device includes a voiceprint database, and the voiceprint database includes a plurality of reference voiceprint features. The first judgment circuit is electrically connected to the storage device and the sound detection device, and the first judgment circuit is used to analyze the voiceprint features of the sound signal and compare the voiceprint features with the reference voiceprint features to judge whether one of the voiceprint features matches the reference voiceprint features. The second judgment circuit is electrically connected to the first judgment circuit and the control circuit. The second judgment circuit is used to judge whether the moving speed of the sound source is within the reference speed range according to the frequency change of the sound signal that conforms to at least one reference voiceprint feature. When the moving speed of the sound source is within the reference speed range, the control circuit controls the automatic door to be in an open state.

[0006] To solve the above technical problems, another technical solution adopted by the present disclosure is to provide an automatic door sound control method for controlling an automatic door. The method includes using a sound detection device to detect the sound signal of the sound source; judging whether the voiceprint feature of the sound signal matches one of a plurality of reference voiceprint features; when the voiceprint feature of the sound signal matches at least one of the reference voiceprint features, judging whether the moving speed of the sound source is within the reference speed range according to the frequency change of the sound signal; and when the moving speed of the sound source is within the reference speed range, controlling the automatic door to be in an open state.

[0007] One of the beneficial effects of the present disclosure is that the automatic door sound control system and the automatic door sound control method provided by the present disclosure determine whether to open the automatic door by analyzing the voiceprint characteristics of the sound signal of the sound source, judging the moving speed of the sound source, and judging the distance between the sound source and the automatic door. In this way, the time to open the automatic door can be more accurately grasped, the number of misoperations of the automatic door can be reduced, and thus the power consumption of the automatic door can be reduced and the flow of people can be made smoother.

[0008] To further understand the features and technical content of the present disclosure, please refer to the following detailed description and drawings of the present disclosure. However, the provided drawings are only for reference and illustration, and are not used to limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a functional block diagram of the automatic door sound control system according to the first embodiment of the present disclosure;

[0010] Figure 2A It is a schematic diagram of the sound wave detected by the sound detection device from a stationary sound source;

[0011] Figure 2B It is a schematic diagram of the sound wave detected by the sound detection device from a moving sound source;

[0012] Figure 3 It is a functional block diagram of the automatic door sound control system according to the second embodiment of the present disclosure;

[0013] Figure 4 It is a functional block diagram of the automatic door sound control system according to the third embodiment of the present disclosure;

[0014] Figure 5 It is a functional block diagram of the automatic door sound control method according to the fourth embodiment of the present disclosure;

[0015] Figure 6 It is a functional block diagram of the automatic door sound control method according to the fifth embodiment of the present disclosure;

[0016] Figure 7 It is a flowchart of the automatic door sound control method according to the first embodiment of the present disclosure;

[0017] Figure 8 It is a flowchart of the automatic door sound control method according to the second embodiment of the present disclosure;

[0018] Figure 9 It is a flowchart of the automatic door sound control method according to the third embodiment of the present disclosure; and

[0019] Figure 10 It is a flowchart of the automatic door sound control method according to the fourth embodiment of the present disclosure.

[0020] Among them, the reference numerals are explained as follows:

[0021] 1: Automatic door sound control system

[0022] 101: Sound detection device

[0023] 103: Storage device

[0024] 105: First judgment circuit

[0025] 107: Second judgment circuit

[0026] 108: Control circuit

[0027] 109: First filter circuit

[0028] 111: Amplification circuit

[0029] 113: Remote device

[0030] 115: Third judgment circuit

[0031] 117: Second filter circuit

[0032] D: Automatic door

[0033] S: Sound source

[0034] M: Microphone

[0035] Steps S701 - S709

[0036] Steps S801 - S813

[0037] Steps S901 - S911

[0038] Steps S1001 - S1017 Specific implementation manners

[0039] Figure 1 It is a functional block diagram of the automatic door sound control system according to the first embodiment of the present disclosure. As Figure 1 shown, the automatic door sound control system 1 is used to control an automatic door D, and the automatic door sound control system 1 includes a sound detection device 101, a storage device 103, a first judgment circuit 105, a second judgment circuit 107, and a control circuit 108. The sound detection device 101 detects the sound signal of the sound source and is electrically connected to the first judgment circuit 105, the storage device 103 is electrically connected to the first judgment circuit 105, the first judgment circuit 105 is electrically connected to the second judgment circuit 107, the second judgment circuit 107 is electrically connected to the control circuit 108, and the control circuit 108 is electrically connected to the automatic door D.

[0040] For example, the sound detection device 101 can be a microphone array. The microphone array includes multiple microphones, and the microphones are spaced apart from each other. The microphone array is assembled on the ceiling around the automatic door D, and the detection range of the microphone array is within 4 meters. Generally, the microphone array is normally in the sleep mode, and only when a sound source appears within the detection range, the microphone array switches from the sleep mode to the working mode.

[0041] Figure 2A FIG. is a schematic diagram of the sound detection device detecting the sound wave emitted by a stationary sound source, and Figure 2B FIG. is a schematic diagram of the sound detection device detecting the sound wave emitted by a moving sound source. As Figure 2A shown, the sound detection device 101 is a microphone array, and the microphone array includes multiple microphones M spaced apart from each other. When the sound source S within the detection range is stationary, the frequencies of the sound signals received by each microphone M are the same. As Figure 2B shown, when the sound source S within the detection range is continuously moving, the closer the microphone M is to the sound source S, the higher the frequency of the sound signal received by it, and the farther the microphone M is from the sound source S, the lower the frequency of the sound signal received by it. In this way, according to the frequency change of the sound signal, it can be judged whether the sound source S is in a moving state and evaluate the moving direction of the sound source S.

[0042] Referring again to Figure 1 , the storage device 103 is, for example, a non-volatile memory or a hard disk. The storage device 103 is used to store a voiceprint database, and the voiceprint database includes multiple reference voiceprint features. For example, the reference voiceprint features include the voiceprint features of the footsteps of men of different age groups when walking, the voiceprint features of the footsteps of men of different age groups when running, the voiceprint features of the footsteps of women of different age groups when walking, and the voiceprint features of the footsteps of women of different age groups when running.

[0043] The sound detection device 101 transmits the detected sound signal to the first judgment circuit 105, and the first judgment circuit 105 analyzes the voiceprint feature of the sound signal and compares the voiceprint feature with the reference voiceprint features in the storage device 103 to judge whether the voiceprint feature matches one of the reference voiceprint features. When the first judgment circuit 105 confirms that the voiceprint feature of the sound signal matches one of the reference voiceprint features, the first judgment circuit 105 transmits the sound signal to the second judgment circuit 107. When the first judgment circuit 105 confirms that the voiceprint feature of the sound signal does not match any of the reference voiceprint features, the first judgment circuit 105 determines the sound signal as noise.

[0044] After the second determination circuit 107 receives the sound signal, the second determination circuit 107 determines whether the moving speed of the sound source is within the reference speed range according to the frequency change of the sound signal. When the moving speed of the sound source is within the reference speed range, the control circuit 108 controls the automatic door D to be in the open state. For example, the reference speed range is set to 0.5 m / s to 0.7 m / s. When the moving speed of the sound source is 0.6 m / s, the second determination circuit 107 confirms that the moving speed of the sound source is within the reference speed range, and the control circuit 108 controls the automatic door D to be in the open state. There are two cases for the automatic door D to be in the open state. The first case is that when the current state of the automatic door D is open, the automatic door D maintains its current state. The second case is that when the current state of the automatic door D is closed, the control circuit 108 controls the automatic door D to switch from the closed state to the open state.

[0045] Figure 3 It is a functional block diagram of the automatic door sound control system according to the second embodiment of the present disclosure. As Figure 3 shown, the automatic door sound control system 1 further includes a first filter circuit 109 and an amplifier circuit 111. The first filter circuit 109 is electrically connected to the output terminal of the first determination circuit 105, and the amplifier circuit 111 is electrically connected to the output terminal of the first filter circuit 109. When the voiceprint feature of the sound source matches one of the reference voiceprint features, the first determination circuit 105 outputs a sound signal to the first filter circuit 109, and then the first filter circuit 109 performs noise reduction processing on the sound signal. The first filter circuit 109 outputs the denoised sound signal to the amplifier circuit 111, and the amplifier circuit 111 amplifies the sound signal to highlight the voiceprint feature of the sound signal. The output terminal of the amplifier circuit 111 is electrically connected to the second determination circuit 107.

[0046] Figure 4 It is a functional block diagram of the automatic door sound control system according to the third embodiment of the present disclosure. As Figure 4 shown, the automatic door sound control system 1 further includes a remote device 113, and the remote device 113 is, for example, a cloud host or a mobile communication device. The remote device 113 is electrically connected to the storage device 103 by wire or wirelessly. The remote device 113 is connected to a plurality of external voiceprint feature databases through a network. In this way, the remote device 113 periodically updates the voiceprint database in the storage device 103 according to the external voiceprint feature databases. In other embodiments, the storage device 103 may also be disposed in the remote device 113 and electrically connected to the first determination circuit 105 by wire or wirelessly.

[0047] Figure 5 It is a functional block diagram of the automatic door sound control method according to the fourth embodiment of the present disclosure. As Figure 5As shown, the automatic door sound control system 1 further includes a third judgment circuit 115. The third judgment circuit 115 is electrically connected to the second judgment circuit 107 and the control circuit 108, and the control circuit 108 is electrically connected to the automatic door D. When the moving speed of the sound source is within the reference speed range, the second judgment circuit 107 transmits a sound signal to the third judgment circuit 115. After receiving the sound signal, the third judgment circuit 115 judges whether the distance between the sound source and the automatic door D is less than the reference distance according to the frequency change of the sound signal. When the third judgment circuit 115 confirms that the distance between the sound source and the automatic door D is less than the reference distance, the control circuit 108 controls the automatic door D to be in the open state. There are two cases regarding the control circuit 108 controlling the automatic door D to be in the open state. The first case is that when the current state of the automatic door D is open, the automatic door D maintains its current state. The second case is that when the current state of the automatic door D is closed, the control circuit 108 controls the automatic door D to switch from the closed state to the open state.

[0048] Figure 6 is a functional block diagram of the automatic door sound control method according to the fifth embodiment of the present disclosure. As Figure 6 shown, the automatic door sound control system 1 includes a sound detection device 101, a storage device 103, a first judgment circuit 105, a second judgment circuit 107, a control circuit 108, a first filter circuit 109, an amplifier circuit 111, a remote device 113, a third judgment circuit 115, and a second filter circuit 117. The sound detection device 101 is electrically connected to the first judgment circuit 105, and the storage device 103 is electrically connected to the first judgment circuit 105 and the remote device 113. The output end of the first judgment circuit 105 is electrically connected to the input end of the first filter circuit 109, and the output end of the first filter circuit 109 is electrically connected to the amplifier circuit 111. The input end of the second judgment circuit 107 is electrically connected to the output end of the amplifier circuit 111, and the second judgment circuit 107 is electrically connected to the second filter circuit 117. The third judgment circuit 115 is electrically connected to the second filter circuit 117 and the control circuit 108, and the control circuit 108 is electrically connected to the automatic door D. That is to say, the second judgment circuit 107 is indirectly connected to the control circuit 108 through the second filter circuit 117 and the third judgment circuit 115.

[0049] When the first determination circuit 105 confirms that the voiceprint feature of the voice signal of the sound source matches one of the reference voiceprint features, the first determination circuit 105 outputs the voice signal to the first filtering circuit 109, and then the first filtering circuit 109 performs noise reduction processing on the voice signal. After the voice signal undergoes the noise reduction processing by the first filtering circuit 109, the amplification circuit 111 further performs amplification processing on the voice signal after the noise reduction processing. The amplification circuit 111 transmits the amplified voice signal to the second determination circuit 107, and then the second determination circuit 107 determines whether the moving speed of the sound source is within the reference speed range according to the frequency change of the voice signal.

[0050] When the second determination circuit 107 confirms that the moving speed of the sound source is within the reference speed range, the second determination circuit 107 outputs the voice signal to the second filtering circuit 117. Then, the second filtering circuit 117 performs noise reduction processing on the voice signal and transmits the voice signal after the noise reduction processing to the third determination circuit 115. The third determination circuit 115 determines whether the distance between the sound source and the automatic door D is less than the reference distance according to the frequency change of the voice signal. When the third determination circuit 115 confirms that the distance between the sound source and the automatic door D is less than the reference distance, the control circuit 108 controls the automatic door D to be in the open state.

[0051] Figure 7 It is a flowchart of the automatic door voice control method according to the first embodiment of the present disclosure. As Figure 7 shown, in step S701, the voice signal of the sound source is detected, and then step S703. In step S703, it is determined whether the voiceprint feature of the voice signal matches one of the multiple reference voiceprint features.

[0052] For example, the first reference voiceprint feature is stored in the storage device 103, and the first reference voiceprint feature is the voiceprint feature of a male aged 20 - 30 walking. When a 27-year-old male walks towards the automatic door and the voice detection device 101 detects his footsteps within its detection range, after the first determination circuit 105 analyzes the voiceprint feature of the male's footsteps while walking and compares the analyzed voiceprint feature with the first reference voiceprint feature, the first determination circuit 105 can confirm that the voiceprint feature of the male's walking footsteps matches the first reference voiceprint feature in the storage device 103.

[0053] When the voiceprint feature of the voice signal does not match one of the reference voiceprint features, then step S705. In step S705, the automatic door maintains its existing state, and then returns to step S701.

[0054] When the voiceprint feature of the voice signal matches one of the reference voiceprint features, step S707 is then executed. In step S707, it is determined whether the moving speed of the sound source is within the reference speed range based on the frequency change of the voice signal. When the moving speed of the sound source is not within the reference speed range, return to step S705.

[0055] When the moving speed of the sound source is within the reference speed range, step S709 is then executed. In step S709, the automatic door is controlled to be in the open state, and return to step S701. Specifically, when the current state of the automatic door is open, the existing state of the automatic door is maintained. When the current state of the automatic door is closed, the automatic door is opened.

[0056] Figure 7 The automatic door sound control method can be executed via Figure 1 The automatic door sound control system, but not limited thereto. Among them, step S701 is executed by the sound detection device 101, step S703 is executed by the first judgment circuit 105, and step S707 is executed by the second judgment circuit 107.

[0057] Figure 8 is a flowchart of the automatic door sound control method according to the second embodiment of the present disclosure, and Figure 8 The automatic door sound control method includes steps S801 to S813. Figure 8 The automatic door sound control method and Figure 7 The difference between the automatic door sound control methods lies in steps S807 and S809, and the detailed contents of steps S801 to S813 are as follows.

[0058] In step S801, the sound signal of the sound source is detected, and then step S803 is executed. In step S803, it is determined whether the voiceprint feature of the voice signal matches one of the multiple reference voiceprint features. When the voiceprint feature of the voice signal does not match one of the reference voiceprint features, step S805 is then executed. In step S805, the automatic door maintains its existing state, and then returns to step S801. When the voiceprint feature of the voice signal matches one of the reference voiceprint features, step S807 is then executed.

[0059] In step S807, noise reduction processing is performed on the voice signal, and then step S809 is executed. In step S809, amplification processing is performed on the voice signal after noise reduction processing.

[0060] After step S809, step S811 follows. In step S811, it is determined whether the moving speed of the sound source is within the reference speed range based on the frequency change of the sound signal. When the moving speed of the sound source is not within the reference speed range, return to step S805. When the moving speed of the sound source is within the reference speed range, step S813 follows. In step S813, the automatic door is controlled to be in the open state, and then return to step S801.

[0061] Figure 8 The automatic door sound control method can be executed via Figure 3 The automatic door sound control system, but not limited thereto. Among them, step S801 is executed by the sound detection device 101, step S803 is executed by the first judgment circuit 105, step S807 is executed by the first filtering circuit 109, step S809 is executed by the amplification circuit 111, and step S811 is executed by the second judgment circuit 107.

[0062] Figure 9 is a flowchart of the automatic door sound control method according to the third embodiment of the present disclosure, and Figure 9 The automatic door sound control method includes steps S901 to S911. Figure 9 The difference between the automatic door sound control method and Figure 7 The automatic door sound control method lies in step S909, and the details of steps S901 to S911 are as follows.

[0063] In step S901, the sound signal of the sound source is detected, and then step S903 follows. In step S903, it is determined whether the voiceprint feature of the sound signal matches one of the multiple reference voiceprint features. When the voiceprint feature of the sound signal does not match one of the reference voiceprint features, step S905 follows. In step S905, the automatic door remains in the existing state, and then return to step S901. When the voiceprint feature of the sound signal matches one of the reference voiceprint features, step S907 follows.

[0064] In step S907, it is determined whether the moving speed of the sound source is within the reference speed range based on the frequency change of the sound signal. When the moving speed of the sound source is not within the reference speed range, return to step S905. When the moving speed of the sound source is within the reference speed range, step S909 follows. In step S909, it is determined whether the distance between the sound source and the automatic door is less than the reference distance. When the distance between the sound source and the automatic door is less than the reference distance, step S911 follows. In step S911, the automatic door is controlled to be in the open state, and then return to step S901. When the distance between the sound source and the automatic door is not less than the reference distance, step S905 follows.

[0065] Figure 9 The automatic door sound control method can be executed via Figure 5It is executed by the automatic door sound control system, but not limited thereto. Among them, step S901 is executed by the sound detection device 101, step S903 is executed by the first judgment circuit 105, step S907 is executed by the second judgment circuit 107, and step S909 is executed by the third judgment circuit 115.

[0066] Figure 10 It is a flowchart of the automatic door sound control method according to the fourth embodiment of the present disclosure, and Figure 10 The automatic door sound control method includes steps S1001 to S1017. Figure 10 The difference between the automatic door sound control method and Figure 9 The difference between the automatic door sound control methods lies in steps S1007, S1009 and S1013, and the details of steps S1001 to S1017 are as follows.

[0067] In step S1001, the sound signal of the sound source is detected, and then step S1003. In step S1003, it is judged whether the voiceprint feature of the sound signal matches one of the multiple reference voiceprint features. When the voiceprint feature of the sound signal does not match one of the reference voiceprint features, then step S1005. In step S1005, the automatic door remains in the existing state, and then returns to step S1001. When the voiceprint feature of the sound signal matches one of the reference voiceprint features, then step S1007.

[0068] In step S1007, the sound signal is denoised, and then step S1009. In step S1009, the denoised sound signal is amplified.

[0069] After step S1009, then step S1011. In step S1011, it is judged whether the moving speed of the sound source is within the reference speed range according to the frequency change of the sound signal. When the moving speed of the sound source is not within the reference speed range, return to step S1005. When the moving speed of the sound source is within the reference speed range, then step S1013.

[0070] In step S1013, the sound signal is denoised again, and then step S1015. In step S1015, it is judged whether the distance between the sound source and the automatic door is less than the reference distance. When the distance between the sound source and the automatic door is less than the reference distance, then step S1017. In step S1017, the automatic door is controlled to be in an open state, and then returns to step S1001. When the distance between the sound source and the automatic door is not less than the reference distance, then step S1005.

[0071] Figure 10 The automatic door sound control method can be via Figure 6It is implemented by the automatic door sound control system, but not limited thereto. Among them, step S1001 is executed by the sound detection device 101, step S1003 is executed by the first judgment circuit 105, step S1007 is executed by the first filter circuit 109, step S1009 is executed by the amplifier circuit 111, step S1011 is executed by the second judgment circuit 107, step S1013 is executed by the second filter circuit 117, and step S1015 is executed by the third judgment circuit 115.

[0072] [Advantageous effects of the embodiment]:

[0073] The automatic door sound control system and the automatic door sound control method provided by the present disclosure determine whether to open the automatic door by analyzing the voiceprint characteristics of the sound signal of the sound source, judging the moving speed of the sound source, and judging the distance between the sound source and the automatic door. In this way, the time to open the automatic door can be more accurately grasped, the number of misoperations of the automatic door can be reduced, and thus the power consumption of the automatic door can be reduced and the flow of people can be made smoother.

[0074] The content disclosed above is only the preferred feasible embodiment of the present disclosure, and does not limit the claims of the present disclosure. Therefore, all equivalent technical changes made by using the content of the specification and drawings of the present disclosure are included in the claims of the present disclosure.

Claims

1. An automatic door sound control system for controlling an automatic door, characterized in that, The automatic door sound control system includes: A sound detection device for detecting a sound signal of a sound source; A storage device including a voiceprint database containing a plurality of reference voiceprint features; A first judgment circuit electrically connected to the storage device and the sound detection device. The first judgment circuit is used to analyze a voiceprint feature of the sound signal and compare the voiceprint feature with the reference voiceprint features to judge whether one of the voiceprint feature and the reference voiceprint features is consistent; A second judgment circuit electrically connected to the first judgment circuit. The second judgment circuit is used to judge whether a moving speed of the sound source is within a reference speed range according to a frequency change of the sound signal that conforms to at least one of the reference voiceprint features; and A control circuit electrically connected to the second judgment circuit. When the moving speed of the sound source is within the reference speed range, the control circuit controls the automatic door to be in an open state.

2. The automatic door sound control system according to claim 1, characterized in that, The sound detection device is a microphone array including a plurality of microphones, and the microphones are spaced apart from each other.

3. The automatic door sound control system according to claim 1, characterized in that, It further includes a filtering circuit and an amplifying circuit. The filtering circuit is electrically connected to the first judgment circuit, and the amplifying circuit is electrically connected to the filtering circuit.

4. The automatic door sound control system according to claim 1, characterized in that, It further includes a remote device electrically connected to the storage device, and the remote device periodically updates the voiceprint database.

5. The automatic door sound control system according to claim 1, wherein, It further includes: a third judgment circuit electrically connected to the second judgment circuit and the control circuit. When the moving speed of the sound source is within the reference speed range, the third judgment circuit is used to judge whether a distance between the sound source and the automatic door is less than a reference distance according to the frequency change of the sound signal. When the distance between the sound source and the automatic door is less than the reference distance, the control circuit controls the automatic door to be in the open state.

6. An automatic door sound control method for controlling an automatic door, characterized in that, The automatic door sound control method includes: Detecting a sound signal of a sound source by using a sound detection device; Judging whether a voiceprint feature of the sound signal is consistent with one of a plurality of reference voiceprint features; When the voiceprint feature of the sound signal is consistent with at least one of the reference voiceprint features, judging whether a moving speed of the sound source is within a reference speed range according to a frequency change of the sound signal; and When the moving speed of the sound source is within the reference speed range, controlling the automatic door to be in an open state.

7. The automatic door sound control method according to claim 6, wherein, It further includes performing a noise reduction process and an amplification process on the sound signal of the sound source after confirming that the voiceprint feature of the sound signal is consistent with one of the reference voiceprint features and before judging whether the moving speed of the sound source is within the reference speed range according to the frequency change of the sound signal.

8. The automatic door sound control method according to claim 6, characterized in that, It further includes: when the moving speed of the sound source is within the reference speed range, judging whether a distance between the sound source and the automatic door is less than a reference distance according to the frequency change of the sound signal; and When the distance between the sound source and the automatic door is less than the reference distance, controlling the automatic door to be in the open state.

9. The automatic door sound control method according to claim 8, characterized in that, Further, before confirming that the moving speed of the sound source is within the reference speed range and determining whether the distance between the sound source and the sound detection device is less than the reference distance according to the frequency change of the sound signal, a noise reduction process is performed on the sound signal of the sound source.

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