JP4974536B2 - Voice guidance device - Google Patents

Description

  The present invention relates to a voice guidance device that appropriately mediates and outputs a plurality of voice guidances.

Conventionally, a voice synthesizer that forms a guidance voice corresponding to a voice guidance instruction, a voice external output part that outputs a guidance voice formed by the voice synthesizer, and before all guidance voices are output from the voice external output part A voice output duplication determination unit that detects that the next voice guidance instruction has been input, a guidance voice type data storage unit that accumulates guidance voice type data to which a priority classification is assigned for each guidance voice, and priority of a specific guidance voice The priority order of the previous guidance voice and the next guidance voice when it is determined that the voice output processing is duplicated by the guidance voice type search section for searching the rank classification from the guidance voice type data storage section and the voice output duplication determination section. A guidance voice switching discriminating unit that discriminates a mode of switching the guidance voice to be output by comparing the types, and a voice voice output unit that outputs a guidance voice switching discrimination unit when the guidance voice switching discriminating unit performs the discrimination. Voice guidance device characterized by comprising a guide audio switching unit for switching the guidance voice is known (e.g., see Patent Document 1).
JP 2002-236029 A

  By the way, in recent years, with the increase in the types of alarm / guidance systems installed in vehicles, it is predicted that a large number of voice guidance output requests will occur in close proximity in time. For example, as shown in FIG. 9, in the vicinity of an intersection, a voice guidance “This is a left turn” from the navigation system, a voice guidance “Ahead, please stop” from a pause guidance system, and other vehicles, etc. From the system that detects and guides the approach of an obstacle, output requests for voice guidance such as “There is an approaching vehicle. Be careful” can occur in close proximity in time.

  In this regard, in the invention described in Patent Document 1, when there is a request for voice guidance with high priority, output of voice guidance with low priority is interrupted, and voice guidance with high priority is preferentially output. Therefore, the voice guidance with a low priority does not hinder the output of the voice guidance with a high priority. However, in such a configuration, only one of a plurality of competing voice guidances is output, and thus convenience of voice guidance may be impaired. On the other hand, it is possible to interrupt the output of the low-priority voice guidance and re-output it after the high-priority voice guidance has been output. In this case, however, the voice guidance re-output is delayed beyond the allowable level. It is necessary not to do.

  Accordingly, an object of the present invention is to provide a voice guidance device that can perform voice guidance in an appropriate output mode when output requests of two or more voice guidances are close in time.

In order to achieve the above object, the first invention provides a first voice output means for outputting a first voice guidance in a first output period;
A second voice output means for outputting the second voice guidance in a second output period;
When there is a second voice guidance output request during voice output of the first voice guidance, the first voice guidance and the second voice guidance are shorter than the total output period of the first output period and the second output period. In a voice guidance device comprising third voice output means for voice output in a third output period,
Means for determining the maximum allowable delay time of the voice output of each voice guidance;
The third sound output means, Oite the first voice guidance when there is an output request of the second voice guidance in the voice output, the maximum allowable of the third output period is the first voice guidance or the second voice guidance The first voice guidance and the second voice so that the third output period expires before the maximum allowable delay time of the first voice guidance or the second voice guidance when it is determined that it expires before the delay time. The guidance is output by voice. Thereby, it becomes possible to perform voice guidance in an appropriate output mode for two or more competing output requests regardless of the priority of those priorities. Further, it is possible to prevent the voice guidance output during the third output period from being delayed beyond an allowable level.

A second invention is the voice guidance device according to the first invention,
The third voice output means, when there is a second voice guidance output request during voice output of the first voice guidance, the third output period includes the maximum allowable delay time of the first voice guidance and the second voice guidance. When it is determined that the maximum allowable delay time of guidance expires whichever is earlier, the third output period is either the maximum allowable delay time of the first voice guidance or the maximum allowable delay time of the second voice guidance. The first voice guidance and the second voice guidance are output by voice so that they expire before the earlier one. In the first and second aspects of the invention, the output of the first voice guidance and the second voice guidance during the third output period is realized when the priorities of the first voice guidance and the second voice guidance are the same. May be.

According to a third aspect of the present invention, in the voice guidance device according to any one of the first and second aspects, the output modes of the first voice guidance and the second voice guidance in the third output period by the third voice output means are:
(1) An output mode in which a phrase of the first voice guidance and a phrase of the second voice guidance are integrated,
(2) An output mode in which at least one of the first voice guidance and the second voice guidance is shortened, or
(3) An output mode in which the output speed of at least one of the first voice guidance and the second voice guidance is increased ,
It is characterized by being. Thereby, the first voice guidance and the second voice guidance can be efficiently output with an appropriate amount of information.

  According to the present invention, it is possible to obtain a voice guidance device that performs voice guidance in an appropriate output mode when two or more voice guidance output requests are close in time.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a system configuration diagram showing an embodiment of a voice guidance device according to the present invention. The voice guidance device 10 according to the present embodiment includes a voice information providing device 12, an information conversion device 14, an arbitration device 16, an amplifier 18, and a speaker 20. Each of these main components is connected via an appropriate communication line.

  The voice information providing device 12 is a navigation device that provides various road information, guidance route information, etc., an alarm device that performs various alarms according to the state of the vehicle, and an alarm that performs various alarms according to the driver's state and external conditions Device included.

  For example, the former type of alarm device is an alarm device that gives an alarm according to the distance between vehicles and the time between vehicles, for example, an obstacle and the vehicle based on information obtained through radar, camera, vehicle-to-vehicle communication, etc. And an alarm device that performs an alarm based on the remaining amount of the battery.

  The latter type of alarm device is based on the driver's face orientation and facial expression taken with a camera, for example, and other physiological information (for example, facial temperature, heart rate, etc.). There is an alarm device that estimates a driver's state of arousal and a warning based on the estimated driver state. Alternatively, there is an alarm device that issues an alarm when an environment with poor visibility or a sudden corner is detected. But the audio | voice information provision apparatus 12 may also contain the kind of warning device which outputs a warning based on the combination of a vehicle state and a vehicle state. As described above, there are generally a large number of audio information providing apparatuses 12, and the description will be continued below on the assumption that two or more audio information providing apparatuses 12 exist.

  The audio information providing device 12 supplies information (audio data) to be output to the amplifier 18 and the speaker 20 via the arbitration device 16 when an information output request is made. The information output request is generated when an output condition regarding each information is satisfied. For example, when the voice information providing device 12 is a navigation device, when a vehicle arrives within a predetermined distance before an intersection where a left turn is scheduled, for example, a voice guidance output request “This is a left turn” is generated. In addition, when the voice information providing device 12 is an alarm device, when the relative relationship between the obstacle on the intersection road and the host vehicle satisfies a predetermined condition with respect to the intersection in front of the vehicle, “There is an approaching vehicle. Please send a voice guidance output request. Further, when the remaining amount of the battery becomes less than the predetermined value, an output request for voice guidance “Battery is insufficient. Please replace the battery” is generated. In addition, when the driver's face direction detected based on the camera deviates from the front direction by a predetermined angle or more and the state continues for a predetermined time or more, `` Please drive forward without looking at it. The voice guidance output request is generated. Since these output requests can be generated independently, two or more output requests may compete as described above with reference to FIG.

  Each audio data sent from the audio information providing apparatus 12 to the arbitrating device 16 includes a priority, an information providing period, and a reprovisionable period as additional information. The additional information is predetermined for each audio data.

  The priority may be a relative index representing the importance of each piece of information (each piece of voice data), but preferably absolute so as to be able to cope with subsequent addition / change of the voice information providing device 12. It is expressed by a typical index. For example, when the priority is determined in 10 stages, in the above example, the left turn guidance is, for example, the medium priority “5”, the approaching vehicle notification is the highest priority “10”, and the remaining battery level The notification may be the lowest priority “3”. This is because alarms for approaching vehicles and warnings regarding other observations are the most important matters related to vehicle safety, and left turn guidance is related to comfort and convenience. However, the priority does not necessarily have to be fixed for each piece of information, and may be variable. For example, regarding the notification of an approaching vehicle, the degree of risk may be low or high depending on the relative relationship between the approaching vehicle and the host vehicle, and therefore the priority may be made variable according to the degree of risk. Similarly, the battery remaining amount, the remaining fuel amount, and the like may be given higher priority when reaching a warning level that hinders vehicle travel.

  The information provision period represents the time required to output each piece of information. This information provision period is derived in advance based on the length of phrases (messages) represented by each audio data and the output speed (pitch).

  The reprovisionable period represents a period during which the information provision start can be waited. The expiration time of the re-provisionable period represents an allowable maximum delay time indicating when the corresponding information should be output at the latest. As will be described later, the re-provisionable period is used, for example, when the output of certain information is interrupted or delayed, and in this case, it is meaningful to re-output the interrupted or delayed information after completion of the priority information output. It becomes a judgment material when judging whether or not there is. The re-provisionable period dynamically changes depending on the state of the vehicle and various situations depending on the information, so it may be predicted and derived based on the state of the vehicle and various situations when requesting information output. It may also be finally determined when it becomes possible to re-provide.

  A speaker 20 is connected to the arbitrating device 16 via an amplifier 18. The arbitration device 16 is in a state where it does not substantially operate during normal times (when two or more voice guidance output requests are not close in time). In this case, the audio data sent from the audio information providing device 12 is usually amplified by the amplifier 18 and output through the speaker 20. For example, a plurality of speakers 20 may be provided at appropriate locations in the vehicle interior.

  The arbitration device 16 performs various mediation processes (described later with reference to FIG. 2) so as to perform voice guidance in an appropriate output mode when two or more voice guidance output requests are close in time. The mediation device 16 is connected to an information conversion device 14 that cooperates in mediation processing. Two or more voice guidance voice data (or information for specifying the voice data) that require mediation is input to the information conversion device 14. The information conversion device 14 converts the voice data of two or more voice guidances that require mediation, and generates new voice data. The new voice data is voice data that can be output in a shorter period than the voice data of two or more voice guides that are the basis of the new voice data. In this example, two types of “integrated version” in which two or more audio data are integrated and “abbreviated version” in which individual audio data are shortened are generated.

  The “integrated version” involves a change of both audio data. For example, the “integrated version” for the combination of two audio data, “There is an approaching car. Please be careful” and “Please drive forward without looking around.” So please drive carefully without looking at it. " In this example, as is clear from the number of words in the phrase, the number of words in the phrase “integrated version” is smaller than the total number of words in the two voice guides on which the phrase is based. It can be seen that the period required to output the guidance is shorter than the total period required to output the two voice guidance separately and continuously.

  The “shortened version” is accompanied by a change of one of the audio data. For example, the “abbreviated version” for the voice guidance for the extra look according to the above example is, for example, “Please do not make the extra look”. Similarly, the “abbreviated version” for approaching vehicle notification is, for example, “Please be careful about approaching vehicles”. Also in this example, as is clear from the number of words in the phrase, the number of words in the “short version” phrase is less than the number of words in the voice guidance that is the basis, so the “short version” voice guidance is output. It can be seen that the period required to do this is shorter than the period required to output the voice guidance as the basis.

Note that there may be no “integrated version” for a combination of two or more audio data, and there may be no “abbreviated version” for some audio data. This is because, for example, the nature of audio data may not be suitable for integration or shortening. Also, “integrated version” for each combination or “abbreviated version” audio data for each audio data may be prepared in advance and held in a predetermined memory 22 or, if necessary, based on the basic audio data. (In this case, it is desirable that the data is added to the memory 22 after generation). In addition, an information provision period is added as additional information to audio data of “integrated version” or “shortened version” as in normal audio data.

  FIG. 2 is a flowchart showing a main part of the arbitration process realized by the arbitration device 16 according to the present embodiment.

  3 to 8 are diagrams related to the specific processing in the flowchart of FIG. 2, and are diagrams illustrating information output modes (or arbitration modes) realized by each processing in time series. FIGS. 3 to 8 show the generation status (additional information such as priority) of voice guidance output requests from the two voice information providing devices 12A and 12B in the upper two rows, and the operation of the information conversion device 14 Is shown in the third stage, the operation of the arbitration device 16 is shown in the fourth stage, and the final output result (after the arbitration) is shown in the fifth stage. The audio data related to each information a, b, c, etc. is shown in a section corresponding to the length of each information provision period from the time when the output is requested.

  In step 100, it is determined whether or not there is a voice guidance output request (information provision request). If there is no voice guidance output request, there is no need for mediation, so the current processing routine is terminated. If there is a voice guidance output request, the process proceeds to step 110.

  In step 110, it is determined whether another information (voice guidance) is currently being provided. If no other voice guidance is being output, there is no need for mediation, and output of information relating to the output request is permitted (step 120). In this case, as shown in FIG. 3, the output of the information a related to the output request (in this example, the audio data from the audio information providing apparatus 12A) is permitted and is output as it is through the amplifier 18 and the speaker 20. Become. On the other hand, if another information is currently being provided, the process proceeds to step 130.

  In step 130, the priority of the information related to the current output request (voice guidance) is compared with the information currently being provided. If the priority of the information related to the current output request is higher than the priority of the information currently provided, the process proceeds to step 140, and the priority of the information related to the current output request is the priority of the information currently provided. If yes, go to step 150.

  If the priority of the information related to the current output request is lower than the priority of the currently provided information, the current output request may be ignored or the currently provided information is not shown. May be provided without delay after the provision of. Alternatively, when the priority of the information related to the current output request is lower than the priority of the information currently being provided, the arbitration process (the process after step 150) as described below is similarly applied. May be. In this case, the possibility of provision can be left even if the information has low priority. However, in this case, arbitration may be performed in a manner that does not hinder provision of high-priority information (for example, a manner that does not use an “integrated version”). Further, the processing after step 150 may be executed only when the difference between the priority of the information related to the current output request and the priority of the information currently being provided is not zero or not so large.

  In step 140, the output of the currently provided information is stopped, and the information related to the current output request is output. In this case, as shown in FIG. 4, the arbitration device 16 sends a stop signal to the voice information providing apparatus 12A, so that the voice data from the voice information providing apparatus 12A (in this example, low priority information). The supply of the amplifier 18 and the speaker 20 in a) is stopped. At the same time, a permission signal is sent from the arbitrating device 16 to the voice information providing apparatus 12B, so that the voice data (in this example, information b with high priority) is sent from the voice information providing apparatus 12B to the amplifier 18 and the speaker. 20 is supplied. As a result, the output of the information a currently being provided is stopped, and the information b related to the new output request is output via the amplifier 18 and the speaker 20. Thereby, when the output request | requirements of two or more audio guidances compete, information with high priority can be output efficiently.

  In step 150, it is determined whether the currently provided information can be re-provided. That is, it is determined whether the currently provided information is of a nature that can be interrupted and provided again. This determination includes information provision period and re-provision period of information currently being provided, information provision period of information related to the current output request, and information provision period of information of “integrated version” for these two pieces of information, Based on.

  If the currently provided information can be re-provided without using the “integrated version” information in this step 150, the output of the currently provided information is canceled and the current output request is not shown. After the output of the information related to is completed, the information currently provided is re-provided. On the other hand, when the currently provided information can be re-provided using the “integrated version” information (that is, the output of the integrated version information is the information of the currently provided information and the information related to the current output request). If it is completed within the re-provision period whichever expires earlier), the process proceeds to step 160. If the information currently being provided is not re-provisionable, the process proceeds to step 170.

  In step 160, the output of the currently provided information is stopped, and instead of this, “integrated version” information obtained by integrating the currently provided information and the information related to the current output request is output. In this case, as shown in FIG. 5, the arbitration device 16 sends a signal indicating replacement to the voice information providing apparatus 12A, so that the voice data from the voice information providing apparatus 12A (in this example, the priority level) The supply of the high information d) to the amplifier 18 and the speaker 20 is stopped. Similarly, a signal indicating replacement is sent from the arbitrating device 16 to the audio information providing apparatus 12B, so that the audio data from the audio information providing apparatus 12B (information b with high priority in this example) is transmitted. Supply to the amplifier 18 and the speaker 20 is stopped. At the same time, a permission signal is sent from the arbitrating device 16 to the information conversion device 14, so that the audio data related to the information “c” of the “integrated version” of the information d and the information b is sent to the amplifier 18 and the speaker 20. Supplied. As a result, the output of the information d is stopped, and instead of this, the “integrated version” information c obtained by integrating the information d and the information b is output.

  Here, in FIG. 5, the expiration points of the reproducible period of the information d and the information b are indicated by black diamonds. In this example, as shown in FIG. 5, the information d and the information b cannot be completed within the re-provisionable period even if either one of them is re-provided after output (the significance of re-provision). (There are few). However, according to the present embodiment, even in such a situation, the “integrated version” information c is output, so that two pieces of information can be effectively provided within the re-provisionable period. Thus, according to the present embodiment, even when output requests for two pieces of information having the same priority are in conflict, by outputting information of “integrated version” obtained by integrating these two pieces of information, Two pieces of information can be efficiently provided with a minimum loss of information. Thereby, the high convenience of voice guidance is maintained in the situation where a plurality of voice guidance competes.

  In step 170, it is determined whether or not the information related to the current output request can be re-provided. This determination is made based on the information provision period of the information currently being provided, the information provision period of the information related to the current output request, and the reprovisionable period.

  In step 170, if the information related to the current output request can be re-provided, the process proceeds to step 180. If the information related to the current output request cannot be re-provided, the process proceeds to step 190.

  In step 180, the output of the currently provided information is continued as it is, and after the output of the currently provided information is completed, the information related to the current output request is output. In this case, as shown in FIG. 6, the output of the information currently being provided (in this example, information d with high priority from the audio information providing apparatus 12A) is continued as usual, and thereafter a new output request is applied. Information (in this example, information b with high priority from the audio information providing apparatus 12B) is output, and the output of the information b is completed within the reprovisionable period.

  In step 190, it is determined whether or not the information relating to the current output request can be re-provided by the “shortened version”. This determination is made based on the information provision period of the information currently being provided, the information reproducibility period of the information related to the current output request, and the information provision period of the “shortened version” of the information related to the current output request. Is called.

  In this step 190, when the information related to the current output request can be re-provided by “shortened version”, the process proceeds to step 200, and the information related to the current output request can be re-provided by “shortened version”. If not, go to Step 210.

  In step 200, the output of the currently provided information is continued as it is, and after the output of the currently provided information is completed, the “shortened version” of the information related to the current output request is output. In this case, as shown in FIG. 7, even if there is an output request for new information (in this example, high-priority information b from the audio information providing apparatus 12B), information currently being provided (in this example, Output of the high-priority information d) from the audio information providing apparatus 12A is continued as usual, and after completion of the output, “abbreviated version” audio data of the information related to the current output request is output. In this example, unlike the example shown in FIG. 6, the information provision period of the information d is long. Therefore, as shown in FIG. 7, even if the information b is output after the output of the information d is completed, The output cannot be completed within the provisionable period (in this case, the significance of provision of the information b is reduced). In such a case, according to the present embodiment, the information “e” of “abbreviated version” is output, so that two pieces of information can be effectively provided within the re-provisionable period. As described above, according to this embodiment, even when output requests for two pieces of information having the same priority are in conflict, one of these two pieces of information (information relating to the previous request) cannot be re-provided. On the other hand, by shortening and outputting the other (information related to the subsequent request), it is possible to efficiently provide the two pieces of information with a minimum loss of information amount. Thereby, the high convenience of voice guidance is maintained in the situation where a plurality of voice guidance competes.

  In step 210, the output of the currently provided information is continued and the output of the information related to the current output request is abandoned. In this case, as shown in FIG. 8, the output of the currently provided information is continued as it is, and no information is output after the output of the currently provided information is completed. In the example shown in FIG. 8, unlike the example shown in FIG. 7, the reproducible period of the information b is short, and the information output is completed within the reprovisionable period even with the information f of the “shortened version” of the information b. I can't. In this case, according to the present embodiment, the information “f” of the information “b” is not output, so that it is possible to avoid providing information at an improper timing at which the significance of providing information has diminished.

  In the above description related to FIG. 2, for the sake of easy understanding of the present embodiment, for the sake of convenience, a third voice guidance output request is further generated in a situation where two voice guidance output requests compete. If you do not expect. However, the present invention can be similarly applied to a case where output requests of three or more voice guidances compete.

  In this embodiment, the information whose output has been canceled in the above-described step 140 is completed using the “shortened version” of the audio data as long as it can be provided within the re-provisionable period. It may be output later. As a result, it is possible to leave the possibility of providing information with low priority.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the present invention. Can be added.

  For example, in the above-described embodiment, the information of “integrated version” or “shortened version” is generated one by one for one combination or one piece of audio data, but the degree of integration for the same combination Two or more “integrated versions” may be generated / prepared, or two or more “shortened versions” having different shortening degrees may be generated / prepared for one audio data. Alternatively, from the same viewpoint, the degree of integration of “integrated version” information may be varied according to the re-provisionable period at that time, and the information of “shortened version” may be re-provisionable period at that time The degree of shortening may be varied according to

  In the above-described embodiment, in the above-described embodiment, the information of “integrated version” or “shortened version” is used to realize efficient information output in a short period while suppressing loss of the amount of information to be provided. However, in addition to or in place of the “integrated version” or “shortened version”, the voice message output speed may be increased (ie, the pitch is appropriately shortened within the audible range so that the voice can be quickly spoken. Can be output in). In this case, as long as it can be varied within a range that can be heard, the loss of the amount of information to be provided can be made substantially zero.

  Further, in the above-described embodiment, the priority determination may be omitted. Thereby, even if it is information with low priority, the possibility of provision can be left.

  In the example shown in FIG. 1, audio data to be output is supplied to the amplifier 18 and the speaker 20 via the arbitration device 16, but the present invention is not limited to this and should be output. The audio data may be supplied to the amplifier 18 and the speaker 20 without using the arbitration device 16. In any case, it suffices if the stop or restart of information output can be controlled in accordance with an instruction signal instructing permission or cancellation of information output from the arbitrating device 16.

  Similarly, in the example shown in FIG. 1, “integrated version” or “abbreviated version” audio data to be output is supplied to the amplifier 18 and the speaker 20 via the arbitration device 16. However, the present invention is not limited to this, and “integrated version” or “shortened version” audio data to be output may be supplied to the amplifier 18 and the speaker 20 without going through the arbitration device 16. In any case, it is only necessary that specific “integrated version” or “abbreviated version” audio data can be output in accordance with an instruction signal (permission signal) from the arbitrating device 16.

1 is a system configuration diagram showing an embodiment of a voice guidance device according to the present invention. It is a flowchart which shows the principal part of the arbitration process implement | achieved by the arbitration apparatus 16 by a present Example. It is a figure which shows the information output mode implement | achieved by the process of step 120 of FIG. 2 in a time series. It is a figure which shows the information output mode implement | achieved by the process of step 140 of FIG. 2 in a time series. It is a figure which shows the information output mode implement | achieved by the process of step 160 of FIG. 2 in time series. It is a figure which shows the information output mode implement | achieved by the process of step 180 of FIG. 2 in a time series. It is a figure which shows the information output mode implement | achieved by the process of step 200 of FIG. 2 in a time series. It is a figure which shows the information output mode implement | achieved by the process of step 210 of FIG. 2 in a time series. It is a figure which shows the condition where the information output in the vicinity of an intersection competes.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Voice guidance apparatus 12 Voice information provision apparatus 14 Information conversion apparatus 16 Arbitration apparatus 18 Amplifier 20 Speaker 22 Memory

Claims (3)

First voice output means for outputting voice of the first voice guidance in the first output period;
A second voice output means for outputting the second voice guidance in a second output period;
When there is a second voice guidance output request during voice output of the first voice guidance, the first voice guidance and the second voice guidance are shorter than the total output period of the first output period and the second output period. In a voice guidance device comprising third voice output means for voice output in a third output period,
Means for determining the maximum allowable delay time of the voice output of each voice guidance;
The third sound output means, Oite the first voice guidance when there is an output request of the second voice guidance in the voice output, the maximum allowable of the third output period is the first voice guidance or the second voice guidance The first voice guidance and the second voice so that the third output period expires before the maximum allowable delay time of the first voice guidance or the second voice guidance when it is determined that it expires before the delay time. A voice guidance device for outputting guidance by voice. The third sound output means, Oite the first voice guidance when there is an output request of the second voice guidance in the voice output, the third output period, and the maximum allowable delay time of the first voice guidance first When it is determined that the maximum allowable delay time of the two voice guidance expires, whichever is earlier, the third output period includes the maximum allowable delay time of the first voice guidance and the maximum allowable delay time of the second voice guidance. The voice guidance device according to claim 1, wherein the voice guidance device outputs the first voice guidance and the second voice guidance by voice so as to expire before the earlier one. The output modes of the first voice guidance and the second voice guidance in the third output period by the third voice output means are:
(1) An output mode in which a phrase of the first voice guidance and a phrase of the second voice guidance are integrated,
(2) An output mode in which at least one of the first voice guidance and the second voice guidance is shortened, or
(3) An output mode in which the output speed of at least one of the first voice guidance and the second voice guidance is increased,
The voice guidance device according to claim 1 or 2.

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