Sound source analysis device

Abstract

The present invention relates to a sound source analysis device and, more particularly, to a sound source analysis device for analyzing a sound source by using a plurality of microphones. The sound source analysis device according to an embodiment of the present invention comprises: a speaker for outputting an alarm; a voice reception unit for receiving a voice; a housing that provides a first accommodation space for accommodating the speaker and a second accommodation space for accommodating the voice reception unit; and a voice cover coupled to the housing and sealing the voice reception unit from the outside, wherein the voice reception unit includes a plurality of microphone modules.

Description

Sound analysis device

[0001] The present invention relates to a sound source analysis device, and more specifically, to a sound source analysis device that analyzes a sound source using a plurality of microphones.

[0002] A camera may be used for monitoring a specific space. Video generated by the camera is transmitted to a server in real-time or periodically, and the user can access the server using their terminal to view the camera footage. Alternatively, the video generated by the camera may be transmitted directly to the user's terminal.

[0003] Meanwhile, for a surveillance system using cameras, the space must be equipped with lighting. For example, if the surveillance space is not equipped with lighting or if the provided lighting is not functioning, surveillance using cameras may not be performed properly.

[0004] Microphones can be used to replace cameras. Events in the surveillance space can be detected by analyzing sound using microphones.

[0005] On the other hand, when a surveillance system is established using microphones, the location where an event occurred may not be easily identified.

[0006] Therefore, in constructing a surveillance system using a microphone, there is a need for an invention that enables easy identification of the location where an event occurred.

[0007] The problem that the present invention aims to solve is to provide a sound source analysis device that analyzes a sound source using a plurality of microphones.

[0008] The problems of the present invention are not limited to those mentioned above, and other unmentioned objectives will be clearly understood by those skilled in the art from the description below.

[0009] To achieve the above objective, a sound source analysis device according to an embodiment of the present invention comprises a speaker that outputs an alarm, a voice receiver that receives voice, a housing that provides a first receiving space for accommodating the speaker and a second receiving space for accommodating the voice receiver, and a voice cover coupled to the housing and sealing the voice receiver to the outside, wherein the voice receiver includes a plurality of microphone modules.

[0010] The above housing includes a main housing providing the first receiving space, a lower housing coupled to the main housing to seal one side opening of the first receiving space, and a first voice blocking ring disposed in the shape of a ring between the main housing and the lower housing to block the entry and exit of voice between the first receiving space and the outside.

[0011] The main housing includes an alarm opening for outputting an alarm of the speaker to the outside, and a guide ring formed in the shape of a ring along the edge of the alarm opening to guide the output direction of the alarm, wherein the guide ring guides the alarm to be output at an angle to the opposite side of the voice receiver.

[0012] The guide ring includes a guide inclined surface that guides the output of the alarm of the speaker, and the angle between the reference axis and the guide inclined surface far from the voice receiver is formed to be larger than the angle between the reference axis perpendicular to the surface of the alarm opening and the guide inclined surface adjacent to the voice receiver.

[0013] The second receiving space is formed between the housing and the voice cover.

[0014] The above plurality of microphone modules receive voice in the same direction.

[0015] The voice receiving unit further includes a circuit board to which the plurality of microphone modules are connected, and each of the plurality of microphone modules is connected to the circuit board by a connecting bar provided in the shape of a bar.

[0016] The above circuit board is coupled to the above voice cover.

[0017] The above circuit board includes a processor that analyzes voice received by the plurality of microphone modules.

[0018] The processor analyzes the phase of the voice received through the plurality of microphone modules to determine the direction of the point where the event occurred.

[0019] The above processor analyzes the voice received by the plurality of microphone modules to determine the cause of the event.

[0020] The voice cover includes a cover plate that seals the plurality of microphone modules to the outside, and the cover plate includes a voice hole formed on the front of each of the plurality of microphone modules for voice input.

[0021] The voice cover includes a cover ring positioned in the shape of a ring on the edge of the cover plate, and a second voice blocking ring positioned to be in close contact with the cover ring to block the entry and exit of voice between the second receiving space and the outside.

[0022] The above housing includes a main housing providing the second receiving space, and an upper housing coupled to the main housing to fix the voice cover, and the second voice blocking ring includes an upper blocking ring disposed at the connection portion between the upper housing and the cover ring at the upper part of the cover ring, and a lower blocking ring disposed at the connection portion between the main housing and the cover ring at the lower part of the cover ring.

[0023] The upper housing includes an alarm output hole for outputting an alarm by the speaker, and a voice input hole for receiving voice from the voice receiver.

[0024] The alarm output hole and the voice receiving hole are formed side by side along one side surface of the upper housing.

[0025] Each of the plurality of microphone modules includes a microphone, a microphone case that accommodates the microphone, and a cushioning member disposed between the microphone and the microphone case to absorb shock between the microphone and the microphone case.

[0026] The above buffer member includes an upper buffer member positioned toward the voice cover and a lower buffer member positioned on the opposite side of the voice cover, and the upper buffer member includes a through hole that guides voice input through a voice hole formed in the voice cover to the microphone.

[0027] Specific details of other embodiments are included in the detailed description and drawings.

[0028] According to the sound source analysis device of the present invention as described above, since the sound source is analyzed using a plurality of microphones, there is an advantage in that the direction of the point where the event occurred and the cause of the event can be easily identified.

[0029] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims.

[0030] FIG. 1 is a perspective view of a sound source analysis device according to an embodiment of the present invention.

[0031] FIG. 2 is an exploded perspective view of a sound source analysis device according to an embodiment of the present invention.

[0032] Figure 3 is a side cross-sectional view of the main housing.

[0033] Figure 4 is a drawing showing a speaker combined with a main housing.

[0034] Figure 5 is a drawing showing the lower housing.

[0035] FIG. 6 is a drawing illustrating that the first receiving space is sealed off from the outside.

[0036] Figure 7 is an exploded perspective view of the voice cover.

[0037] FIG. 8 is a drawing illustrating that the second receiving space is sealed off from the outside.

[0038] Figure 9 is a perspective view of the voice receiver.

[0039] Figure 10 is a bottom view of the voice receiver.

[0040] Figure 11 is a diagram showing a microphone module connected to a circuit board by a connecting bar.

[0041] Fig. 12 is an exploded perspective view of a microphone module.

[0042] Figure 13 is a side cross-sectional view of a microphone module.

[0043] Figure 14 is a diagram illustrating how the direction of the point where an event occurred is calculated by a sound source analysis device.

[0044] FIG. 15 is a diagram illustrating a sound source analysis device outputting an alarm.

[0045] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The advantages and features of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0046] Unless otherwise defined, all terms used in this specification (including technical and scientific terms) may be used in a meaning that is commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0047] FIG. 1 is a perspective view of a sound source analysis device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a sound source analysis device according to an embodiment of the present invention.

[0048] Referring to FIGS. 1 and 2, a sound source analysis device (10) according to an embodiment of the present invention comprises a housing (100), a speaker (200), a voice receiving unit (300), and a voice cover (400).

[0049] The housing (100) may provide a first receiving space (111) (see FIG. 3) for receiving a speaker (200) and a second receiving space (112) (see FIG. 3) for receiving a voice receiver (300). The housing (100) may be composed of two regions (101, 102). The first region (101) of the housing (100) represents a region for receiving and operating the speaker (200), and the second region (102) of the housing (100) represents a region for receiving and operating the voice receiver (300). The first receiving space (111) may be included in the first region (101), and the second receiving space (112) may be included in the second region (102).

[0050] The housing (100) is configured to include a main housing (110), an upper housing (120), and a lower housing (130).

[0051] The main housing (110) may provide a first receiving space (111) and a second receiving space (112). A detailed description of the main housing (110) will be provided later through FIGS. 3 and FIGS. 4.

[0052] The upper housing (120) can be coupled to the main housing (110) to secure the voice cover (400). The voice cover (400) can be positioned between the upper housing (120) and the main housing (110). A fine alarm output hole (121) for outputting an alarm by the speaker (200) can be formed in the first region (101) of the upper housing (120). A voice input hole (122) for receiving voice from the voice receiver (300) can be formed in the second region (102) of the upper housing (120). The voice cover (400) can be exposed to the outside through the voice input hole (122). An alarm output hole (121) and a voice input hole (122) may be formed side by side along one side surface of the upper housing (120), wherein the alarm output hole (121) may be formed in the first area (101) and the voice input hole (122) may be formed in the second area (102).

[0053] The lower housing (130) can be coupled to the main housing (110) to form a first receiving space (111). The speaker (200) can be accommodated in the first receiving space (111) formed by the coupling of the main housing (110) and the lower housing (130).

[0054] The speaker (200) can output an alarm. For example, the speaker (200) can output an alarm when an event occurs.

[0055] The voice receiving unit (300) can receive voice. In the present invention, voice represents a sound resulting from the occurrence of an event. For example, footsteps, the sound of glass breaking, or the sound of an object colliding may be included in the voice of the present invention. The voice receiving unit (300) may include a plurality of microphone modules (310). Each microphone module (310) can receive voice individually. The detailed structure and function of the voice receiving unit (300) will be described later through FIGS. 9 to 13.

[0056] The voice cover (400) is coupled to the housing (100) and serves to seal the voice receiver (300) against the outside. The aforementioned second receiving space (112) may be formed between the housing (100) and the voice cover (400). Specifically, the second receiving space (112) may be formed between the main housing (110) and the voice cover (400). The voice receiver (300) can receive the voice of an event generated from the outside while being received in the second receiving space (112).

[0057] FIG. 3 is a side cross-sectional view of the main housing, and FIG. 4 is a drawing showing a speaker coupled to the main housing.

[0058] Referring to FIGS. 3 and 4, the main housing (110) may provide a first receiving space (111) and a second receiving space (112).

[0059] The first receiving space (111) and the second receiving space (112) may be spaces isolated from each other. As the speaker (200) and the voice receiver (300) are respectively placed in spaces isolated from each other, the alarm generated from the speaker (200) may be prevented from entering the voice receiver (300).

[0060] The main housing (110) may include an alarm opening (113) and a guide ring (114). The alarm opening (113) may be formed on one side of the first receiving space (111) to output an alarm of the speaker (200) to the outside. The guide ring (114) may be formed in the shape of a ring along the edge of the alarm opening (113) to guide the direction of the alarm output. The guide ring (114) may guide the alarm to be output at an angle to the opposite side of the voice receiver (300). Guide inclined surfaces (114a, 114b) that guide the output of the alarm of the speaker (200) may be formed on the guide ring (114). The guide inclined surfaces (114a, 114b) may be formed in the shape of a ring along the edge of the alarm opening (113) to form the boundary of the alarm opening (113). The angle (hereinafter referred to as the guide angle) (SLa, SLb) between the reference axis (Ax) perpendicular to the surface of the alarm opening (113) and the guide inclined surfaces (114a, 114b) can be formed differently depending on the position of the voice receiver (300). For example, the guide angle (SLb) of the guide inclined surface (114b) far from the voice receiver (300) can be formed larger than the guide angle (SLa) of the guide inclined surface (114a) adjacent to the voice receiver (300).

[0061] The speaker (200) can output an alarm in a direction parallel to the reference axis (Ax). As the guide angle (SLb) of the guide slope surface (114b) far from the voice receiver (300) is formed larger than the guide angle (SLa) of the guide slope surface (114a) adjacent to the voice receiver (300), the alarm of the speaker (200) can be output at an angle opposite to the voice receiver (300). As a result, the input of the alarm of the speaker (200) through the voice receiver (300) is reduced, and the efficiency of event voice recognition by the voice receiver (300) can be improved.

[0062] FIG. 5 is a drawing showing a lower housing, and FIG. 6 is a drawing explaining that the first receiving space is sealed to the outside.

[0063] Referring to FIGS. 5 and 6, the lower housing (130) can be coupled to the main housing (110) to seal one side opening of the first receiving space (111).

[0064] The housing (100) may include a first voice blocking ring (131). The first voice blocking ring (131) is positioned in the shape of a ring between the main housing (110) and the lower housing (130) to block the entry and exit of voice between the first receiving space (111) and the outside. For example, the first voice blocking ring (131) may be made of a material having an elastic modulus greater than a certain size, such as rubber.

[0065] As illustrated in FIG. 6, a first receiving space (111) can be formed by combining the main housing (110) and the lower housing (130). An alarm opening (113) is formed at the top of the first receiving space (111), and the alarm opening (113) can be sealed by a speaker (200). That is, the entry and exit of sound between the first receiving space (111) and the outside through the alarm opening (113) can be blocked by the speaker (200). A first voice blocking ring (131) can be placed at the connection portion between the main housing (110) and the lower housing (130) formed at the bottom of the first receiving space (111). The first voice blocking ring (131) can be placed along the connection portion between the main housing (110) and the lower housing (130) formed in the shape of a ring. As a result, the entry and exit of voice between the first receiving space (111) and the outside through the lower opening of the first receiving space (111) can be blocked by the first voice blocking ring (131).

[0066] FIG. 7 is an exploded perspective view of the voice cover, and FIG. 8 is a drawing to explain that the second receiving space is sealed to the outside.

[0067] Referring to FIG. 7, the voice cover (400) may include a cover plate (410), a cover ring (420), and a second voice blocking ring (431, 432).

[0068] The cover plate (410) serves to seal the plurality of microphone modules (310) provided in the voice receiver (300) to the outside. The cover plate (410) may include a voice hole (411) formed on the front of each of the plurality of microphone modules (310) for voice input. Each microphone module (310) can receive voice input only through the corresponding voice hole (411). Through this, the voice input to each microphone module (310) may have different phases.

[0069] The cover ring (420) can be positioned in the shape of a ring on the edge of the cover plate (410). The cover ring (420) can be attached to and fixed to the cover plate (410).

[0070] The second voice blocking ring (431, 432) is positioned to be in close contact with the cover ring (420) and serves to block the entry and exit of voice between the second receiving space (112) and the outside. Two second voice blocking rings (431, 432) may be provided. One second voice blocking ring (431) may be positioned on the upper part of the cover ring (420), and the other second voice blocking ring (432) may be positioned on the lower part of the cover ring (420). Hereinafter, the second voice blocking ring (431) positioned on the upper part of the cover ring (420) is referred to as the upper blocking ring, and the second voice blocking ring (432) positioned on the lower part of the cover ring (420) is referred to as the lower blocking ring.

[0071] As illustrated in FIG. 8, a second receiving space (112) can be formed by combining the main housing (110) and the voice cover (400). The upper opening of the second receiving space (112) can be sealed by a cover plate (410). Voice resulting from the occurrence of an event can be input to the microphone module (310) only through a voice hole (411) formed in the cover plate (410).

[0072] An upper blocking ring (431) may be placed at the connection portion between the upper housing (120) and the cover ring (420). The upper blocking ring (431) may be placed along the connection portion between the upper housing (120) and the cover ring (420), which is formed in the shape of a ring. As a result, the transmission of vibrations from the upper housing (120) to the microphone module (310) may be reduced. For example, an alarm from the speaker (200) may be output to the outside through the upper housing (120). At this time, the upper housing (120) may vibrate due to the alarm from the speaker (200). Such vibrations can be reduced by the upper blocking ring (431).

[0073] A lower blocking ring (432) may be disposed at the connection portion between the main housing (110) and the cover ring (420) formed at the bottom of the second receiving space (112). The lower blocking ring (432) may be disposed along the connection portion between the main housing (110) and the cover ring (420) formed in the shape of a ring. As a result, the entry and exit of sound between the second receiving space (112) and the outside through the lower opening of the second receiving space (112) can be blocked by the lower blocking ring (432).

[0074] FIG. 9 is a perspective view of a voice receiver, FIG. 10 is a bottom view of a voice receiver, and FIG. 11 is a drawing showing a microphone module connected to a circuit board by a connecting bar.

[0075] Referring to FIGS. 9 and 10, the voice receiving unit (300) is configured to include a plurality of microphone modules (310), a circuit board (320), a connector (330), and a connecting bar (340).

[0076] Multiple microphone modules (310) can be arranged on the same plane to receive sound in the same direction. For example, multiple microphone modules (310) can be arranged facing the same direction on a virtual plane parallel to the circuit board (320). Among the multiple microphone modules (310), adjacent microphone modules (310) can be arranged at a pre-set interval. For example, the interval between adjacent microphone modules (310) can be 60 mm or more. Referring to FIG. 10, the interval between one of the microphone modules (310) placed in the center and the microphone modules (310) placed at the edge can be 60 mm or more. The interval between adjacent microphone modules (310) among the microphone modules (310) placed at the edge can be the same. For example, the interval between the upper microphone module (310) and the left microphone module (310) can be the same as the interval between the upper microphone module (310) and the right microphone module (310). Alternatively, according to some embodiments of the present invention, the arrangement of a plurality of microphone modules (310) may be determined differently depending on the location where the sound source analysis device (10) is installed. For example, when the sound source analysis device (10) is placed on the ceiling, the spacing between the microphone modules (310) placed at the edges is the same, and when the sound source analysis device (10) is placed on the wall, the spacing between the microphone modules (310) placed at the edges may be different.

[0077] A cover plate (410) as described above may be disposed on the front of a plurality of microphone modules (310). Each of the plurality of microphone modules (310) can receive voice through a voice hole (411) formed in the cover plate (410). As voice is received through different voice holes (411), each of the plurality of microphone modules (310) can receive voice of different phases.

[0078] A plurality of microphone modules (310) may be connected to the circuit board (320). The circuit board (320) can supply power to the plurality of microphone modules (310) and analyze voice received by the plurality of microphone modules (310). To this end, the circuit board (320) may be equipped with a processor (not shown) for analyzing voice.

[0079] The circuit board (320) can be coupled to the voice cover (400). Specifically, the circuit board (320) can be coupled to the cover plate (410) of the voice cover (400). A microphone module (310) connected to the circuit board (320) can be in close contact with the cover plate (410). Meanwhile, according to some embodiments of the present invention, the microphone module (310) may be coupled to the cover plate (410) together with the circuit board (320).

[0080] Referring to FIGS. 10 and 11, each of the plurality of microphone modules can be connected to a circuit board (320) by a connecting bar (340) provided in the shape of a bar.

[0081] A circuit board (320) may be provided with a connector (330) for each of the plurality of microphone modules (310). A connecting bar (340) may connect the connector (330) and the microphone module (310). For example, the connecting bar (340) may be made of plastic or metal. Power and signal transmission between the circuit board (320) and the microphone module (310) may be performed through a wire (not shown) formed in the connecting bar (340).

[0082] As illustrated in FIG. 11, the connecting bar (340) may be provided in a bent form. As the connecting bar (340) is provided in a bent form, the length of the connecting bar (340) becomes relatively longer, and the vibration absorption efficiency of the connecting bar (340) can be improved. As a result, the connecting bar (340) can reduce vibrations transmitted from the circuit board (320) to the microphone module (310).

[0083] FIG. 12 is an exploded perspective view of a microphone module, and FIG. 13 is a side cross-sectional view of a microphone module.

[0084] Referring to FIGS. 12 and 13, the microphone module (310) is configured to include a microphone (311), a microphone case (312), and a buffer (313).

[0085] The microphone (311) can receive voice and convert the received voice into an electrical signal. The electrical signal is transmitted to a circuit board (320), and the processor of the circuit board (320) can analyze the electrical signals received from multiple microphones (311).

[0086] The microphone case (312) can accommodate the microphone (311). The microphone case (312) can protect the microphone (311) from external impacts. To this end, the microphone case (312) may be made of a material having relatively high rigidity. For example, the microphone case (312) may be made of plastic. The microphone case (312) may include an upper case (312a) and a lower case (312b). As the upper case (312a) and the lower case (312b) are combined, a receiving space for accommodating the microphone (311) may be formed.

[0087] The cushioning member (313) is positioned between the microphone (311) and the microphone case (312) to absorb shock between the microphone (311) and the microphone case (312). That is, the cushioning member (313) can be positioned to surround the microphone (311) in the receiving space of the microphone case (312). The cushioning member (313) may include an upper cushioning member (313a) and a lower cushioning member (313b). The upper cushioning member (313a) may be positioned toward the voice cover (400), and the lower cushioning member (313b) may be positioned on the opposite side of the voice cover (400). As the upper cushioning member (313a) and the lower cushioning member (313b) are combined, the microphone (311) can be accommodated in the receiving space of the cushioning member (313). A through hole (314) may be formed in the upper cushioning member (313a). The through hole (314) can guide the voice input through the voice hole (411) formed in the voice cover (400) to the microphone (311). The voice input through the voice hole (411) formed in the cover plate (410) of the voice cover can pass through the through hole (314) and be transmitted to the microphone (311).

[0088] As shown in FIG. 13, the microphone (311) is sealed by a buffer (313), and the buffer (313) can be sealed by a microphone case (312).

[0089] Vibrations generated outside the microphone case (312), such as the alarm of the speaker (200), can be reduced primarily by the microphone case (312) and secondarily by the damping part (313). Therefore, only voice input through the through hole (314) is detected by the microphone (311), and other voices may not be detected by the microphone (311).

[0090] Figure 14 is a diagram illustrating how the direction of the point where an event occurred is calculated by a sound source analysis device.

[0091] Referring to FIG. 14, the sound source analysis device (10) can calculate the direction of the point where the event (30) occurred.

[0092] As described above, a plurality of microphone modules (310) provided in the voice receiving unit (300) may be arranged on the same plane. Referring to FIG. 14, the plurality of microphone modules (310) may be arranged at different positions parallel to the ceiling surface (20) where the sound source analysis device (10) is installed.

[0093] Multiple microphone modules (310) can receive voice only through their respective voice holes (411). Therefore, the voice input to each of the multiple microphone modules (310) may have different phases. The processor of the voice receiving unit (300) can determine the direction of the point where the event (30) occurred by analyzing the phase of the voice received through the multiple microphone modules (310). For example, the processor can determine the angle (D) between the reference axis (Ax) perpendicular to the surface of the voice analysis device and the point where the event (30) occurred. Additionally, the processor can determine the cause of the event (30) by analyzing the voice received through the multiple microphone modules (310).

[0094] FIG. 15 is a diagram illustrating a sound source analysis device outputting an alarm.

[0095] Referring to FIG. 15, the speaker (200) of the sound source analysis device (10) can output an alarm (40). If the event (30) generated according to the voice analysis result is determined to be a pre-set emergency event (30), the processor can control the speaker (200) to output the alarm (40).

[0096] The alarm (40) can be output at an angle to the opposite side of the voice receiver (300). Accordingly, the input of the alarm (40) to the voice receiver (300) is reduced, and the reliability of the voice detected by the voice receiver (300) can be improved.

[0097] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention may be implemented in other specific forms without changing its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

Claims

1. A speaker that outputs an alarm; A voice receiving unit that receives voice; A housing providing a first receiving space for accommodating the above-mentioned speaker and a second receiving space for accommodating the above-mentioned voice receiver; and It includes a voice cover coupled to the above housing and sealing the voice receiver against the outside, The above voice receiving unit is a sound source analysis device comprising a plurality of microphone modules.

2. In Paragraph 1, The above housing is, A main housing providing the above-mentioned first receiving space; A lower housing coupled to the main housing above to seal one side opening of the first receiving space; and A sound source analysis device comprising a first voice blocking ring disposed in the shape of a ring between the main housing and the lower housing to block the entry and exit of voice between the first receiving space and the outside.

3. In Paragraph 2, The above main housing is, An alarm opening for outputting the alarm of the above speaker to the outside; and It includes a guide ring formed in a ring shape along the edge of the alarm opening to guide the output direction of the alarm, The above guide ring is a sound source analysis device that guides the alarm to be output at an angle to the opposite side of the voice receiver.

4. In Paragraph 3, The above guide ring includes a guide inclined surface that guides the output of the alarm of the speaker, and A sound source analysis device in which the angle between the reference axis and the guide inclined surface far from the voice receiver is formed larger than the angle between the reference axis perpendicular to the surface of the alarm opening and the guide inclined surface adjacent to the voice receiver.

5. In Paragraph 1, The second receiving space above is a sound source analysis device formed between the housing and the voice cover.

6. In Paragraph 1, The above plurality of microphone modules is a sound source analysis device that receives voice in the same direction.

7. In Paragraph 1, The above voice receiving unit further includes a circuit board to which the plurality of microphone modules are connected, and A sound source analysis device in which each of the above plurality of microphone modules is connected to the circuit board by a connecting bar provided in the shape of a bar.

8. In Paragraph 7, The above circuit board is a sound source analysis device coupled to the above voice cover.

9. In Paragraph 7, The above circuit board is a sound source analysis device comprising a processor that analyzes voice received by the plurality of microphone modules.

10. In Paragraph 9, The above processor is a sound source analysis device that analyzes the phase of voice received through the plurality of microphone modules to determine the direction of the point where an event occurred.

11. In Paragraph 9, The above processor is a sound source analysis device that analyzes voice received by the plurality of microphone modules to determine the cause of an event.

12. In Paragraph 1, The above voice cover includes a cover plate that seals the plurality of microphone modules to the outside, and A sound source analysis device in which the above cover plate is formed on the front of each of the plurality of microphone modules and includes a voice hole for voice input.

13. In Paragraph 12, The above voice cover is, A cover ring disposed in the shape of a ring at the edge of the above cover plate; and A sound source analysis device comprising a second voice blocking ring positioned to be in close contact with the above-mentioned covering ring to block the entry and exit of voice between the second receiving space and the outside.

14. In Paragraph 13, The above housing is, A main housing providing the above-mentioned second receiving space; and It includes an upper housing coupled to the main housing to secure the voice cover, and The above second voice blocking ring is, An upper blocking ring disposed at the connection portion between the upper housing and the covering ring at the upper part of the covering ring; and A sound source analysis device comprising a lower blocking ring disposed at the connection portion between the main housing and the covering ring at the lower part of the covering ring.

15. In Paragraph 14, The upper housing above is, Alarm output hole for outputting an alarm by the above speaker; and A voice analysis device including a voice input hole for receiving voice from the voice receiving unit.

16. In Paragraph 15, The above alarm output hole and the above voice receiving hole are voice analysis devices formed side by side along one side surface of the upper housing.

17. In Paragraph 1, Each of the above plurality of microphone modules is, microphone; A microphone case for housing the above microphone; and A voice analysis device comprising a buffer disposed between the microphone and the microphone case to absorb shock between the microphone and the microphone case.

18. In Paragraph 17, The above buffer unit is, An upper buffer portion positioned toward the above-mentioned voice cover; and It includes a lower buffer positioned on the opposite side of the above voice cover, and The upper buffer portion is a sound source analysis device comprising a through hole that guides voice input through a voice hole formed in the voice cover to the microphone.

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