Voice output system

Abstract

To provide a voice output system for enabling a specific person to easily recognize contents of event voice for the specific person.SOLUTION: A control section H performs event voice output control for controlling a voice output section 18 to output output-object person specifying event voice when a person detection section 15 detects a person. When a device detection section 24 detects a person specifying device 2, the control section sets a person specifying mode where only the person specifying event voice for defining a specific person associated with the detecting person specifying device 2 is allowed to be as an output object from a plurality of types of the person specifying event voice. When the device detection section 24 does not detect the person specifying device 2, the control section sets a person unspecifying mode where all-the-person specifying event voice is allowed to be an output object.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an audio output system including an audio output unit that outputs audio and a control unit that controls the audio output unit. [Background technology]

[0002] Patent document 1 shows an audio output system that includes an audio output unit that outputs audio, a person determination unit that determines whether a person is present in an area where a person is expected to be present, including whether the person is an adult or a child, based on detection information from a first infrared detection unit and a second infrared detection unit, and a control unit that controls the audio output unit, and is configured to output event audio for children if a child is present in the area where a person is expected to be present, and to output event audio for adults if an adult is present in the area where a person is expected to be present. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-139031 Summary of the Invention [Problem to be solved by the invention]

[0004] Such an audio output system is configured to be able to notify adults of the contents of event audio for adults and to notify children of the contents of event audio for children. However, because it is not possible to identify a person, it has been difficult to notify a specific person of the contents of event audio for a specific person, such as a specific one of multiple adults (or children).

[0005] In view of this situation, a main object of the present invention is to provide an audio output system that can easily notify a specific person of the contents of an event audio intended for that specific person. [Means for solving the problem]

[0006] A first characteristic configuration of the present invention includes a sound output unit capable of outputting an event sound to a person; a human detection unit capable of detecting a human within a first set distance from the audio output unit; a device detection unit capable of detecting a person-specific device registered in association with a specific person within a second set distance that is equal to or greater than the first set distance from the audio output unit; a control unit that controls the audio output unit, The event sound includes a person-specific event sound in which a target person is identified, The control unit is configured to be able to execute event audio output control that controls the audio output unit to output the person-specific event audio to be output when the person detection unit detects a person, and When the device detection unit detects the person identification device, a person identification mode is set to output only the person identification event audio that is targeted at a specific person associated with the detected person identification device among the person identification event audio; When the device detection unit does not detect the person-specific device, the device is configured to set to a person-unspecified mode in which all the person-specific event sounds are output.

[0007] According to this configuration, when a person identification device (for example, a terminal device such as a smartphone) is detected within the second set distance and the person identification mode is set, if the person detection unit detects a person within the first set distance, there is a high possibility that the person detected by the person detection unit is a specific person associated with the person identification device. Therefore, in the person identification mode, by outputting only person identification event audio targeted at a specific person associated with the person identification device, it is possible to make it easier to notify the specific person to whom the content of the event audio targeted at a specific person is intended. On the other hand, when the person identification device is not detected within the second set distance and the person unidentified mode is set, if the person detection unit detects a person within the first set distance, all person identification event sounds are output regardless of who they are targeted at. Therefore, it is possible to avoid an event where no person identification event sound can be notified if the person cannot be identified because, for example, the person is not carrying a person identification device.

[0008] A second characteristic configuration of the present invention is that the control unit is configured to change the setting from the person identification mode to the person non-identification mode when the person detection unit does not detect a person within a predetermined set time after switching to the person identification mode.

[0009] According to this configuration, if the person detection device detects a person within the second set distance and switches to person identification mode, and the person detection unit does not detect a person within the set time, the setting is changed to person non-identification mode, thereby avoiding an incident in which the person identification mode is maintained without any person identification event audio being output.

[0010] A third characteristic configuration of the present invention is that the control unit is configured to, after outputting the person-specific event sound in the person-unspecified mode, re-set the person-specific event sound as the output target if the setting is changed to the person-specific mode because the person-specific device of a specific person corresponding to the person-specific event sound is present within the second set distance within a predetermined re-output time after the person-specific event sound is output.

[0011] According to this configuration, in the unspecified person mode, a person-specific event audio corresponding to a specific person to be notified may be output even though the specific person to be notified is not present within the first set distance. However, if the mode is switched from the unspecified person mode to the specific person mode within the predetermined re-output time after the person-specific event audio is output, the person-specific event audio targeted at the specific person linked to the detected person-specific device can be output again, thereby notifying the specific person of the content of the person-specific event audio. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a diagram showing the overall schematic configuration of an audio output system. [Figure 2] FIG. 1 is a diagram showing a schematic configuration of an alarm device. [Figure 3] Mode setting control flowchart [Figure 4] Event audio output control flowchart DETAILED DESCRIPTION OF THE INVENTION

[0013] An embodiment of a voice output system according to the present invention will be described with reference to the drawings. The audio output system 100 shown in Figure 1 is configured using an alarm device 1 installed in a facility such as a user's residence, and when an event occurs that requires audio output of audio data such as disaster prevention information or weather information, the audio data corresponding to the event is output from the alarm device 1, thereby communicating various types of information such as disaster prevention information and weather information to the user.

[0014] In addition to the alarm device 1, the audio output system 100 is equipped with a terminal device 2 such as a smartphone that allows the user to perform various settings and operations, a server device 3 that performs various controls and communications, and an external device 4 that notifies of the occurrence of events, etc. Each of the alarm device 1, terminal device 2, and external device 4 is configured to be able to freely communicate various types of information with the server device 3 via an information and communication network 5 such as the Internet.

[0015] As shown in Fig. 2, the alarm device 1 is disposed on the ceiling 12 or a wall on the side of the ceiling 12, with the indoor space between the floor 11 and the ceiling 12 as the detection area 13. The alarm device 1 is equipped with a monitoring sensor unit 14, a human detection unit 15, a temperature and humidity sensor unit 16, a display unit 17, an audio output unit 18, a device-side control unit 19, a device-side memory unit 20, a device-side communication unit 21, a terminal communication unit 22, etc.

[0016] The device-side memory unit 20 stores various types of information for activating the alarm device 1, and the device-side control unit 19 controls the operating state of the alarm device 1 using the various types of information stored in the device-side memory unit 20. The device-side control unit 19 is configured to be able to send and receive various types of information to and from the server device 3 via the device-side communication unit 21 by wired communication or wireless communication.

[0017] The monitoring sensor unit 14 is equipped with various sensors, such as a gas leak monitoring sensor, a CO (carbon monoxide) monitoring sensor, and a fire monitoring sensor, and the device-side control unit 19 monitors for gas leaks, abnormal CO concentrations, whether or not a fire has occurred, etc., based on the detection information of these sensors.

[0018] For example, when the concentration of the gas to be detected by the gas leak monitoring sensor exceeds a set value, the device-side control unit 19 determines that there is a gas leak and issues a gas leak alarm by displaying on the display unit 17 or outputting a sound from the sound output unit 18. Also, when the CO concentration detected by the CO monitoring sensor exceeds a set value, the device-side control unit 19 determines that there is an abnormal CO concentration and issues a CO concentration abnormality alarm by displaying on the display unit 17 or outputting a sound from the sound output unit 18. Furthermore, when the fire monitoring sensor detects smoke, heat, or the like caused by a fire, the device-side control unit 19 determines that there is a fire and issues a fire alarm by displaying on the display unit 17 or outputting a sound from the sound output unit 18.

[0019] The temperature and humidity sensor unit 16 detects the temperature and humidity of an indoor space such as a kitchen, which includes the detection area 13. The display unit 17 has lamps and LEDs and is configured as a display device capable of displaying text information, etc. The audio output unit 18 is configured, for example, as a speaker, and is configured to be able to output various types of audio data audibly, outputting audio to the user.

[0020] 1, the server device 3 is equipped with a server-side control unit 41, a server-side storage unit 42, a server-side communication unit 43, etc. The server-side storage unit 42 stores various types of information, and the server-side control unit 41 uses the various types of information stored in the server-side storage unit 42 to control the operating state of the server device 3. The server-side control unit 41 is configured to be able to send and receive various types of information to and from the alarm device 1 and external device 4 via the server-side communication unit 43 by wired communication or wireless communication.

[0021] The server device 3 is configured to be able to register users and the terminal devices 2 used by those users, and the information on the registered users and the information on the terminal devices 2 used by those users are stored in a linked state in the server-side storage unit 42. The server device 3 transmits the information on the registered users and the information on the terminal devices 2 used by those users to the alarm device 1. The alarm device 1 stores the information on the registered users transmitted from the server device 3 and the information on the terminal devices 2 used by those users in a linked state in the device-side storage unit 20. Multiple users and multiple terminal devices 2 can be registered in the server device 3. For example, when first to third users and the terminal devices 2 used by each of these users are registered in the server device 3, the server-side memory unit 42 stores information about the first user and information about the first terminal device 2 in a linked state, stores information about the second user and information about the second terminal device 2 in a linked state, and stores information about the third user and information about the third terminal device 2 in a linked state.

[0022] The external device 4 is configured to notify the server device 3 of the occurrence of an external event, such as disaster prevention information or weather information. For example, in the case of disaster prevention information, the external device 4 assumes that an event occurred when an earthquake occurred and notifies the server device 3 of disaster prevention information such as "earthquake occurred." In addition, in the case of weather information, the external device 4 assumes that an event occurred when the weather forecast or the like was updated and notifies the server device 3 of the updated weather forecast (for example, "It is sunny today")

[0023] When the server device 3 receives a notification from the external device 4 that an event has occurred, the server-side control unit 41 acquires audio data corresponding to the event from the server-side storage unit 42 and transmits the acquired audio data to the alarm device 1. As a result, in the alarm device 1, the device-side control unit 19 outputs the audio data transmitted from the server device 3 via the audio output unit 18, thereby communicating the content of the event to the user.

[0024] For example, when an earthquake occurs, the external device 4 notifies the server device 3 that an earthquake has occurred, and the server-side control unit 41 acquires voice data corresponding to the occurrence of the earthquake (voice data such as "earthquake has occurred") from the server-side storage unit 42 and transmits the voice data to the alarm device 1. In the alarm device 1, the device-side control unit 19 outputs the voice data such as "earthquake has occurred" transmitted from the server device 3 through the voice output unit 18, thereby notifying the user that an earthquake has occurred.

[0025] Furthermore, when the weather forecast is updated, the external device 4 notifies the server device 3 that the weather forecast has been updated, and the server-side control unit 41 acquires voice data corresponding to the updated weather forecast from the server-side storage unit 42 (voice data such as "Today's weather is sunny") and transmits the voice data to the alarm device 1. In the alarm device 1, the device-side control unit 19 outputs the voice data such as "Today's weather is sunny" transmitted from the server device 3 through the voice output unit 18, thereby communicating the updated weather forecast to the user.

[0026] In this way, in the audio output system 100, when an event occurs externally, the control unit H, such as the server-side control unit 41 and the device-side control unit 19, performs event audio output control, in which information corresponding to the event is communicated in the order of the external device 4 → server device 3 → warning device 1, and audio data corresponding to the event is output as audio from the audio output unit 18. For example, the weather information is not limited to a weather forecast, and it is also possible to output audio of "approaching rain clouds" when rain clouds approach, or "weather warning issued" when a weather warning is issued.

[0027] The event content in the event audio output control is not limited to disaster prevention information or weather information, but for example, audio data corresponding to news can be output when the news is updated, or audio data corresponding to traffic information can be output when the traffic information is updated, and various types of event content can be applied.

[0028] In this audio output system 100, not only when an event occurs outside the facility, but also when an event occurs inside the facility, the control unit H performs event audio output control to output audio data corresponding to the event from the audio output unit 18. Since the audio output system 100 uses an alarm device 1 that monitors monitored events such as gas leaks, abnormal CO concentrations, and fires, when the alarm device 1 detects a monitored event such as a gas leak, abnormal CO concentrations, or fire, it determines that an event has occurred and outputs audio data corresponding to the monitored event from the audio output unit 18.

[0029] 2, when the apparatus-side control unit 19 detects the occurrence of a gas leak based on the detection information of the monitoring sensor unit 14, it determines that an event has occurred, acquires audio data corresponding to the gas leak, such as "gas leak occurred," from the apparatus-side storage unit 20, and outputs the audio data corresponding to the gas leak, such as "gas leak occurred," by audio from the audio output unit 18. In addition, when the apparatus-side control unit 19 detects an abnormal CO concentration or the occurrence of a fire, it acquires audio data corresponding to the event from the apparatus-side storage unit 20, and outputs the acquired audio data by audio from the audio output unit 18.

[0030] The alarm device 1 is equipped with not only the monitoring sensor unit 14 but also a temperature and humidity sensor unit 16 that detects the temperature and humidity of the indoor space including the detection area 13. Based on the detection information of the temperature and humidity sensor unit 16, the device-side control unit 19 determines whether the temperature and humidity of the indoor space have risen and there is a possibility of heat stroke or the like occurring, and whether the humidity of the indoor space has dropped and become dry, or whether the temperature and humidity environment of the indoor space is in an abnormal state.

[0031] When the device-side control unit 19 determines that the temperature and humidity environment in the indoor space is in an abnormal state, it acquires voice data corresponding to the abnormal temperature and humidity environment from the device-side storage unit 20 and outputs the acquired voice data by voice from the voice output unit 18. At this time, the voice data corresponding to the abnormal temperature and humidity environment can be voice data such as "Caution: Heatstroke" when there is a possibility of heatstroke or the like occurring, or voice data such as "Caution: Dryness" when the environment is dry.

[0032] Furthermore, in the audio output system 100, not only when an event occurs outside or inside the facility, but also when an event occurs at any timing or when a user approaches the audio output unit 18 of the alarm device 1, the control unit H performs event audio output control to output audio data corresponding to the event from the audio output unit 18.

[0033] For example, voice data of a fixed phrase such as "Today is garbage day" can be stored in advance in the server-side storage unit 42 or the device-side storage unit 20, and the date, time, and time period for outputting the voice data of the fixed phrase can be set. Alternatively, free-text voice data can be generated from input text such as "Welcome back, Mr. X" and stored in the server-side storage unit 42 or the device-side storage unit 20, and the date, time, and time period for outputting the free-text voice data can be set. As a result, when the set date, time, and time period arrives, the control unit H performs event voice output control, determining that an event has occurred and outputting any voice data (a fixed phrase or free-text voice data) as event voice. Event voice is voice output from voice data. In addition, any audio data can be set to be output as audio when a user is detected by the human detection unit 15. As a result, when a user is detected by the human detection unit 15, the control unit H determines that an event has occurred and performs event audio output control to output any audio data as event audio.

[0034] Furthermore, a specific user can be set for any audio data. As a result, when a user is detected by the human detection unit 15, if the detected user is the user set for the audio data, the control unit H performs event audio output control to output the audio data as event audio, and if the detected user is not the user set for the audio data, the event audio output control is not executed, so that the audio data is not output as event audio.

[0035] Specifically, if only user A out of users A, B, and C is set as the specific user for any audio data, when a user is detected by the human detection unit 15, if the detected user is user A, the control unit H performs event audio output control to output the any audio data as event audio, and if the detected user is user B or user C rather than user A, the event audio output control is not executed and the any audio data is not output as event audio. If no specific user is set for any voice data, all users are set as the specific users for the voice data.

[0036] Then, when a user is detected by the human detection unit 15, and the control unit H detects a terminal device 2 within the second set distance L2, it determines that the user associated with the detected terminal device 2 has been detected by the human detection unit 15. In other words, for example, when a user is detected by the human detection unit 15, and the control unit H detects a first terminal device 2 within the second set distance L2, it determines that the first user linked to the detected terminal device 2 has been detected by the human detection unit 15.

[0037] Then, when there is voice data in which the first user is set as a specific user or voice data in which no user is set, the control unit H can execute event voice output control to output the voice data as event voice, assuming that an event has occurred, when it determines that the first user has been detected by the human detection unit 15 as described above. Furthermore, if there is no voice data in which the first user is set as a specific user or no voice data in which the user is not set, the control unit H does not execute the event voice output control and does not output the voice data as event voice, even if it determines that the first user has been detected by the human detection unit 15 as described above.

[0038] Any audio data, such as standard phrase audio data or free text audio data, is considered to be person-specific event audio, in which a target person is set, and other audio data, such as audio data corresponding to the occurrence of an earthquake, audio data corresponding to a gas leak, audio data corresponding to an abnormal temperature and humidity environment, audio data corresponding to a weather forecast, and audio data corresponding to news, is considered to be person-unspecific event audio, in which a target person is not specified. In this way, any audio data that can identify a user corresponds to person-specific event audio, and the event audio includes person-specific event audio.

[0039] In short, when a user is detected by the human detection unit 15, if the user is a specific user corresponding to the human-specific event audio, the control unit H performs event audio output control to output any audio data as human-specific event audio, assuming that an event has occurred. In addition, when a user is detected by the human detection unit 15, if the user is not a specific user corresponding to the human-specific event sound, the control unit H determines that an event has not occurred and does not perform event sound output control. In this way, the control unit H is configured to be able to execute event audio output control that controls the audio output unit 18 to output the person-specific event audio to be output when the human detection unit 15 detects a user.

[0040] The control unit H is configured to set the device to a person-specific mode in which, when the device detection unit 24 detects the terminal device 2, only person-specific event audio that is targeted at a specific person linked to the detected terminal device 2 is output, and to set the device to a person-unspecified mode in which all person-specific event audio is output when the device detection unit 24 does not detect the terminal device 2.

[0041] In addition, the control unit H is configured to change the setting from the person specific mode to the person non-specific mode when the person detection unit 15 does not detect a person within a preset time period after switching from the person non-specific mode to the person specific mode. In addition, the control unit H is configured to re-set the person-specific event sound as the output target if, after outputting a person-specific event sound in the person-unspecified mode, the setting is changed to the person-specific mode because the terminal device 2 of a specific person corresponding to the person-specific event sound is present within the second set distance L2 within a predetermined re-output time after the person-specific event sound is output.

[0042] When the audio output system 100 detects a user by the human detection unit 15, it determines that an event has occurred and performs event audio output control.In addition to the audio output unit 18 capable of outputting event audio to the user (person), the human detection unit 15 capable of detecting the user within a first set distance L1 from the audio output unit 18, and the control unit H that controls the audio output unit 18, the audio output system 100 is equipped with a device detection unit 24 capable of detecting a terminal device 2 that is registered in association with a specific user within a second set distance L2 that is equal to or greater than the first set distance L1 from the audio output unit 18. In this embodiment, the second set distance L2 is set to a distance longer than the first set distance L1, so that the entire range from the audio output unit 18 to the first set distance L1 is located within the range from the audio output unit 18 to the second set distance L2.

[0043] The human detection unit 15 includes a pyroelectric infrared sensor unit 31 provided near the audio output unit 18, and an apparatus-side control unit 19 that determines whether or not a human is present within a first set range 23, which is a range from the audio output unit 18 to a first set distance L1 within the detection area 13, based on detection information from the infrared sensor unit 31. The infrared sensor unit 31 includes an infrared detection unit 33 that detects infrared rays incident from the direction of the detection area 13. The apparatus-side control unit 19 determines whether or not a human is present within the first set distance L1 (first set range 23) based on a signal output from the infrared detection unit 33.

[0044] The terminal communication unit 22 is configured to be able to communicate information with the terminal device 2. For example, the terminal communication unit 22 is capable of wireless communication with the terminal device 2 using ultra-wide band (UWB) and is capable of distance measurement using ToF (Time of Fight) technology. Wireless communication is performed between the terminal communication unit 22 and the terminal device 2, and the device-side control unit 19 measures the distance to the terminal device 2 based on the time required for transmission and reception via the wireless communication, and if the distance is equal to or less than the second set distance L2, it determines that the terminal device 2 is detected within a second set range 25, which is the range from the audio output unit 18 to the second set distance L2. That is, the device-side control unit 19 functions as a device detection unit 24 that detects a terminal device 2 that is registered in association with a specific person.

[0045] Furthermore, the device-side control unit 19 can identify the terminal device 2 based on the unique information of the terminal device 2 transmitted from the detected terminal device 2, and identify the user who is registered in association with the identified terminal device 2. In other words, the terminal device 2 corresponds to a person identification device that can identify a person.

[0046] The control unit H is configured to be able to execute mode setting control for setting the execution mode to a person-specific mode or a person-unspecific mode when outputting person-specific event audio, and event audio output control for outputting person-specific event audio. Hereinafter, the control of the control unit H will be described based on the flowchart of the mode setting control shown in FIG. 3 and the flowchart of the person specific event sound output control for outputting the person specific event sound shown in FIG.

[0047] As shown in the flowchart of Fig. 3, when the control unit H is set to the person unspecified mode (#1), if the device detection unit 24 detects a terminal device 2 within the second set distance L2 (#2: Yes), the control unit H changes the setting from the person unspecified mode to the person specified mode (#3). Then, if the person detection unit 15 does not detect a user within the first set distance L1 within a preset time period after setting the person specified mode (#4: Yes), the control unit H changes the setting from the person specified mode to the person unspecified mode (#1), and if the person detection unit 15 detects a user within the first set distance L1 (#4: No), the control unit H maintains the person specified mode (#3).

[0048] As shown in the flowchart of Fig. 4, when a person-specific event occurs because the person detection unit 15 detects a user within the first set distance L1, if the person-specific mode is set (#11: Yes), the corresponding specific user associated with the terminal device 2 detected within the second set distance L2 is the user identified by the person-specific event audio to be output (#12: Yes), the person-specific event audio identifying the user is the person-specific event audio to be output (#13: Yes), and the person-specific event audio to be output has not yet been output (#14: Yes), the control unit H executes event audio output control to output the person-specific event audio (#15).On the other hand, if the person-specific event audio to be output has already been output (#14: No) but the re-output condition is met (#16: Yes), the control unit H executes event audio output control to output the person-specific event audio to be output (#15), but does not execute event audio output control if the re-output condition is not met (#16: No). In this embodiment, the re-output condition is that after the person-specific event audio scheduled to be output in the person-unspecific mode is output, the setting is changed to the person-specific mode within a predetermined re-output time after the audio is output, and in the person-specific mode, the person detection unit 15 detects a user within the first set distance L1.

[0049] In addition, when a person-specific event occurs because the person detection unit 15 detects a user within the first set distance L1, if the person-unspecified mode is set (#11: No) and the person-specific event audio that is scheduled to be output has not yet been output (#17: Yes), the control unit H executes event audio output control (#18) to output the person-specific event audio as person-specific event audio, and if the person-specific event audio that is scheduled to be output has already been output (#17: No), it does not execute event audio output control.

[0050] In this way, the control unit H is configured to be able to execute event audio output control that controls the audio output unit 18 to output the person-specific event audio to be output when the person detection unit 15 detects a user, and is configured to set the control unit H to a person-specific mode that outputs only the person-specific event audio that is targeted at the specific user linked to the detected terminal device 2 when the device detection unit 24 detects a terminal device 2, and to set the control unit H to a person-unspecified mode that outputs all person-specific event audio when the device detection unit 24 does not detect a terminal device 2.

[0051] That is, when the terminal device 2 is detected within the second set distance L2 and the person identification mode is set, if the person detection unit 15 detects a user within the first set distance L1, there is a high possibility that the user detected by the person detection unit 15 is a specific user linked to the terminal device 2. Therefore, in the person identification mode, by outputting only person identification event audio targeted at the specific user linked to the terminal device 2, it is possible to make it easier to notify the specific user to whom the content of the event audio targeted at the specific user is intended. On the other hand, when the terminal device 2 is not detected within the second set distance L2 and the unspecified person mode is set, if the human detection unit 15 detects a person within the first set distance L1, all person-specifying event sounds are output regardless of who they are targeted at. Therefore, it is possible to avoid an event where no person-specifying event sounds can be notified if the user cannot be identified because, for example, the user is not carrying the terminal device 2.

[0052] [Another embodiment] Other embodiments of the present invention will be described below. Note that the configurations of the embodiments described below are not limited to being applied independently, but can also be applied in combination with the configurations of other embodiments.

[0053] (1) In the above embodiment, an example was described in which, when the human detection unit 15 does not detect a user within a preset time after switching from the unspecified person mode to the specified person mode, the setting is changed from the specified person mode to the unspecified person mode even if the terminal device 2 is detected within the second set distance L2. However, the conditions for changing the setting from the specified person mode to the unspecified person mode may be changed as appropriate, for example, when the terminal device 2 detected within the second set distance L2 does not move for a preset set stop time or longer.

[0054] (2) In the above embodiment, the person identification device is the terminal device 2 such as a smartphone, but the person identification device may be configured as something other than the terminal device 2, such as an IC tag such as an RFID tag. [Explanation of symbols]

[0055] 2. Terminal device (person-specific device) 15 Human detection unit 18 Audio output section 24 Device detection unit 100 Audio Output System H control section L1 First set distance L2 Second set distance

Claims

1. an audio output unit capable of outputting an event audio for a person; a human detection unit capable of detecting a human within a first set distance from the audio output unit; a device detection unit capable of detecting a person-specific device registered in association with a specific person within a second set distance that is equal to or greater than the first set distance from the audio output unit; a control unit that controls the audio output unit, The event sound includes a person-specific event sound in which a target person is identified, The control unit is configured to be able to execute event audio output control that controls the audio output unit to output the person-specific event audio to be output when the person detection unit detects a person, and When the device detection unit detects the person identification device, a person identification mode is set to output only the person identification event audio that is targeted at a specific person associated with the detected person identification device among the person identification event audio; An audio output system configured to set to a person-unspecified mode in which all of the person-specified event audio is output when the person-specified device is not detected by the device detection unit.

2. The control unit is configured to change the setting from the person-specific mode to the person-unspecific mode when the person detection unit does not detect a person within a predetermined set time after switching from the person-unspecific mode to the person-specific mode.

3. The control unit is configured to, after outputting the person-specific event audio in the person-unspecified mode, re-set the person-specific event audio as the output target if the setting is changed to the person-specific mode because the person-specific device of a specific person corresponding to the person-specific event audio is present within the second set distance within a predetermined re-output time after the person-specific event audio is output.

Images