Explanation support system

Abstract

To provide an explanation supporting system capable of resolving a question during an explanation.SOLUTION: An explanation supporting system 1 comprises: an explanation material storing unit 3 which stores explanation materials; a voice input unit 5 to which voice is input; a voice analyzing unit 7 which analyzes words included in the voice and acquires voice words; and an output control unit 9 which outputs displayed information. The explanation material storing unit 3 stores, in association with keywords, explanation information included in the explanation materials. The explanation support system 1 further includes a question input unit 13 which is connected to an audience terminal 11 and receives questions from the audience terminal 11. The output control unit 9 extracts a plurality of keywords included in the voice words analyzed by the voice analyzing unit 7, the voice words being obtained prior to receiving the questions from the question input unit 13, receives selection information on keywords selected out of the plurality of keywords from the audience terminal 11, reads out the explanation information associated with the selected keywords from the explanation material storing unit 3 using the selection information, and then outputs the explanation information to the audience terminal 11.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an explanation support system. More specifically, the present invention relates to an explanation support system that can resolve questions during an explanation.

[0002] Japanese Patent Application Laid-Open No. 2021-86389 describes a communication system that enables a speaker in a video conference to easily select audience members who wish to participate and have them participate in the discussion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-86389 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional explanation support systems, the lecture or presentation continues even if the audience has questions. On the other hand, when the speaker answers a question from the audience, the lecture or presentation is interrupted. [Means for solving the problem]

[0005] The above problem is basically solved by sending the audience member, when they input a question into the system, explanation information relating to the part of the explanation preceding the part in which the question arose.

[0006] The present invention relates to an explanation support system 1 using a computer. This system has an explanatory material storage unit 3, a voice input unit 5, a voice analysis unit 7, an output control unit 9, and a question input unit 13. This system may further have one or more of an output explanatory information storage unit 15, an output explanatory information output unit 17, an evaluation information input unit 19, an audience attribute storage unit 21, and an evaluation analysis unit 23.

[0007] The explanatory material storage unit 3 is an element that stores explanatory materials. The explanatory material storage unit 3 further stores explanatory information included in the explanatory materials in association with keywords. The voice input unit 5 is an element into which voice is input. The speech analysis unit 7 is an element for analyzing terms contained in speech and obtaining speech terms. The output control unit 9 is an element for outputting display information. The question input unit 13 is an element for receiving questions from the audience terminals 11 connected to the explanation support system 1.

[0008] Then, the output control unit 9 uses keywords contained in the speech terms analyzed by the speech analysis unit 7 before receiving the question from the question input unit 13 to read explanatory information related to the keywords from the explanatory material memory unit 3 and outputs it to the audience terminal 11. For example, when a "?" is entered into the audience terminal from the input section of the audience terminal, the question information is transmitted to system 1. The system that receives the question information then analyzes the voice terms that existed before the time when the question information was received, which correspond to keywords. It then reads out the analyzed keyword and outputs explanatory information related to that keyword (for example, the page of the presentation or explanatory text) to the audience terminal 11. This allows an explanation of the question to be displayed on the audience terminal that has a question, without the audience having to enter a specific question. In this way, the part of the question that the audience has is able to be re-explained in a customized manner without interrupting the overall flow of the explanation, such as a lecture or presentation. Furthermore, by storing the question information, the audience terminal can repeatedly review the part that the audience has questions about.

[0009] The question may be output to the explanation support system 1 by touching or clicking an icon related to the question displayed on the audience terminal 11. Alternatively, the question may be output to the explanation support system 1 by pressing any key (e.g., the "?" key) or button (e.g., a question button) on the input device of the audience terminal 11. In this way, even if the audience member has a question, they do not need to enter a question on the device; they can simply click on the question icon, touch the question icon if they are using a touch panel, press the "?" on the keyboard, or press a button on a dedicated input device to communicate their question to System 1.

[0010] The output explanatory information storage unit 15 is an element for storing information relating to the output explanatory information, which is the explanatory information output to the audience terminal 11. The output explanatory information output unit 17 is an element that reads out output explanatory information from the output explanatory information storage unit 15 in response to a request from the audience terminal 11 and outputs it to the audience terminal 11. This allows the audience to review the points as many times as they need to.

[0011] The evaluation information input unit 19 is an element for receiving evaluation information from the audience terminal 11. In this case, it is preferable that the output explanatory information storage unit 15 stores the evaluation information together with the output explanatory information. It is also preferable that the output explanatory information output unit 17 outputs the evaluation information together with the output explanatory information. With the evaluation information input unit 19, it is possible to store the parts of a presentation that the audience has evaluated as "good" and to easily browse the parts that the audience has evaluated as "good." This allows quick access to the parts of a long presentation that the audience found useful. Furthermore, when a question is answered, the answer can be communicated to the audience, allowing them to review the answer as many times as they like.

[0012] The audience attribute storage unit 21 is an element for storing the attributes of the audience who output the evaluation information. The evaluation analysis unit 23 is an element for analyzing the evaluation for each attribute based on the attribute and the evaluation information. For example, slide 6 is rated highly by private practice physicians, but slides 1-5 are less interesting because they are already familiar with them. On the other hand, slides 2-3 are rated highly by doctors at large hospitals. The evaluations for each attribute can be analyzed and memorized. Therefore, by collecting such information, it is possible to suggest slides that should be used and slides that should be glossed over depending on the attributes of the audience.

[0013] This specification also provides a program for causing a computer to function as the above-mentioned system, and a computer-readable recording medium storing such a program. Effect of the Invention

[0014] With this system, if an audience member has a question, explanatory information about the part of the explanation preceding the one about which the question occurred can be sent to that audience member. In other words, with this system, if an audience member has a question, they can easily express their intention and obtain explanatory information about the question without interrupting the speaker's explanation. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a block diagram of the explanation support system. [Diagram 2] FIG. 2 is a flowchart for explaining the explanation support method using a computer. [Diagram 3] FIG. 3 is a conceptual diagram showing an example of an explanation support method using a computer. [Figure 4] Figure 4 is a conceptual diagram showing an example of the timing of presentations and questions. [Diagram 5] FIG. 5 is a conceptual diagram showing an example of the relationship between questions and attributes. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, the embodiments for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below, and includes appropriate modifications of the embodiments described below within the scope obvious to those skilled in the art.

[0017] This invention relates to an explanation support system 1. The explanation support system relates to a system for supporting explanations by an explainer (lecturer, presenter, speaker, teacher, lecturer, instructor, MR, explainer, doctor, person giving explanation). This system is preferably one in which there are multiple audience members listening to the explainer's explanation (there are multiple terminals for the audience). This system is a computer-based system.

[0018] Fig. 1 is a block diagram of an explanation support system. As shown in Fig. 1, this system 1 has an explanation material storage unit 3, a voice input unit 5, a voice analysis unit 7, an output control unit 9, and a question input unit 13. This system may further have one or more of an output explanation information storage unit 15, an output explanation information output unit 17, an evaluation information input unit 19, an audience attribute storage unit 21, and an evaluation analysis unit 23. In addition, this system 1 is connected to one or more audience terminals 11 via a communication network such as a network so as to be able to send and receive information.

[0019] The computer has an input unit, an output unit, a control unit, a calculation unit, and a storage unit, and each element is connected by a bus or the like so as to be able to transmit and receive information. For example, the storage unit may store a control program, or various information. When specific information is input from the input unit, the control unit reads out the control program stored in the storage unit. Then, the control unit appropriately reads out the information stored in the storage unit and transmits it to the calculation unit. The control unit also appropriately transmits the input information to the calculation unit. The calculation unit performs calculation processing using the various information received, and stores it in the storage unit. The control unit reads out the calculation results stored in the storage unit and outputs them from the output unit. In this way, various processes and each process are executed. The various processes are executed by each unit or each means. The computer may have a processor, and the processor realizes various functions and various processes.

[0020] The system of the present invention may include a terminal connected to a network such as the Internet or an intranet, and a server connected to the network. Of course, a single computer or mobile terminal may function as the system of the present invention, and multiple servers may exist. Each element will be described below.

[0021] The explanatory material storage unit 3 is an element for storing explanatory materials. The explanatory material storage unit 3 further stores explanatory information included in the explanatory materials in association with keywords. For example, a storage unit of a computer functions as the explanatory material storage unit 3.

[0022] The voice input unit 5 is an element into which voice is input. For example, the input unit (microphone) of a computer functions as the voice input unit 5. Also, if voice is recorded in advance, a device that inputs the recorded voice into the system may function as the voice input unit. In this case, the storage unit, control unit, and calculation unit function as the voice input unit.

[0023] The speech analysis unit 7 is an element for analyzing terms contained in speech to obtain speech terms. Speech is input to the system by the speech input unit 5. The speech analysis unit 7 then analyzes the terms contained in the speech to obtain speech terms, which are terms contained in the speech. Such speech analysis engines and programs are well known. The memory unit, control unit, and calculation unit of the computer function as the speech analysis unit 7. The speech terms analyzed by the speech analysis unit 7 are stored in the memory unit as appropriate.

[0024] The output control unit 9 is an element for outputting display information. The display information may be displayed, for example, on a display unit (monitor) of the system. The display information may also be displayed, for example, on a monitor of the audience terminal 11. For example, the storage unit, control unit, calculation unit, and output unit of a computer function as the output control unit 9. The output control unit 9 reads explanatory information related to the keywords from the explanatory material storage unit 3 using keywords contained in the voice terms analyzed by the voice analysis unit 7 before receiving the question from the question input unit 13, and outputs it to the audience terminal 11. The audience terminal 11 displays the explanatory information on the display unit. The question input unit 13, which will be described later, receives a question from the audience terminal 11 connected to the explanation support system 1. Then, the question (information that there is a question) is input to the system. The system analyzes the voice in parallel to obtain the voice terms. When a question is input, the system performs matching between the voice terms and keywords up to the time the question was input. Then, the system extracts the keyword (or the second or third keyword) that was most immediately present when the question was input. The extracted keyword or keywords are appropriately stored in the storage unit. The system uses the extracted keyword to read explanatory information related to the keyword from the explanatory material storage unit 3. The system then outputs the read explanatory information to the audience terminal 11. Examples of explanatory information may be explanatory text for each keyword, presentation materials explaining each keyword, teaching materials explaining each keyword, or link information (e.g., URL) for referencing explanatory text for each keyword. The extracted keywords may be combined with a system for investigating related terms and topics. Such a system may, for example, have a thesaurus.

[0025] Another example of explanatory information may be based on a past question. In this example, multiple pieces of explanatory information are stored in association with a keyword. For example, in a past presentation, at a certain timing on the 10th slide, explanatory information A is selected in one presentation with respect to a certain keyword, and explanatory information B is selected in another presentation. Then, when a question is input at a specific timing when the 10th page of this presentation material is displayed, it is expected that explanatory information A or explanatory information B will be selected. For this reason, when a question is input (for example, an audience member presses "?"), explanatory information A and explanatory information B (or the titles of explanatory information A and explanatory information B) are displayed on the display unit of the audience terminal, and the explanatory information selected by the audience terminal may be used as the explanatory information.

[0026] The question input unit 13 is an element for receiving questions from the audience terminals 11 connected to the explanation support system 1. After receiving a question, information related to the question is input to the system. The question may be output to the explanation support system 1 by touching or clicking an icon related to the question displayed on the audience terminal 11. Alternatively, the question may be output to the explanation support system 1 by pressing any key (e.g., the "?" key) or button (e.g., a question button) on the input device of the audience terminal 11.

[0027] The output explanatory information storage unit 15 is an element for storing information related to the output explanatory information, which is explanatory information output to the audience terminal 11. A storage unit of a computer functions as the output explanatory information storage unit 15. The output explanatory information storage unit 15 may store the output explanatory information in association with information related to the audience (such as ID and terminal information), for example.

[0028] The output explanatory information output unit 17 is an element for reading the output explanatory information from the output explanatory information storage unit 15 in response to a request from the audience terminal 11, and outputting it to the audience terminal 11. For example, the input unit, control unit, calculation unit, and output unit of a computer function as the output explanatory information output unit 17. The audience terminal 11 outputs a transmission request to send the output explanatory information. The output transmission request is input to the system 1. The output explanatory information output unit 17 reads the output explanatory information from the output explanatory information storage unit 15 using information about the audience. Then, the output explanatory information output unit 17 outputs the read output explanatory information to the audience terminal 11. The audience terminal 11 receives the output explanatory information, and displays it on the display unit of the audience terminal 11 based on the explanatory information. The display unit may be an audio output unit that displays audio (outputs audio). If multiple contents are expected when you press "?", you may change the output explanatory information by selecting which one you want to know.

[0029] The evaluation information input unit 19 is an element for receiving evaluation information from the audience terminal 11. For example, the input unit of a computer functions as the evaluation information input unit 19. An evaluation (for example, "like") regarding an explanation such as a presentation is input to the audience terminal 11 from the input unit of the audience terminal 11. The audience terminal 11 outputs information regarding the evaluation from its output unit. The output evaluation information is sent to the system via the network. The system receives the sent evaluation information and inputs it into the system. The input unit of a computer functions as the evaluation information input unit 19.

[0030] The audience attribute memory unit 21 is an element for storing attributes of the audience who output the evaluation information. For example, a computer's memory unit functions as the audience attribute memory unit 21. The audience who output the evaluation information is, for example, the user or terminal of the terminal that output the evaluation such as "Like!". Attributes refer to the social relationships of individuals (for example, doctor, doctor at a large hospital, hospital doctor, private practice doctor, graduate student, university student, student, teacher, lecturer, associate professor, professor, cram school instructor, sole proprietor, company executive, employee, employer, etc.).

[0031] The evaluation analysis unit 23 is an element for analyzing the evaluation for each attribute based on the attribute and the evaluation information.

[0032] Fig. 2 is a flow chart for explaining a method for supporting explanation using a computer. As shown in Fig. 2, this method is a method for supporting explanation using a computer, and includes the following steps. Also, the processor of the computer or the computer, for example, causes the computer to perform the following steps. A voice is input to the system (voice input step: S101). The system analyzes the terms contained in the input speech and obtains speech terms (speech term acquisition step: S102). The system receives the question (information about the question) output from the audience terminal 11 (question receiving step: S103). The system compares the voice terms used up until the question is received with keywords stored in the system (explanation material storage unit 3) (keyword comparison step: S104). The system extracts keywords that match the collated speech terms, and obtains extracted keywords (extracted keyword acquisition step: S105). Among the extracted keywords, those that appear before the question is received are extracted as extracted keywords immediately before the question. The system uses the extracted keywords (the extracted keyword immediately before the question, the extracted keywords that are secondary candidates) to read out explanatory information stored in association with the keywords in the system (in the explanatory material storage unit 3) (explanatory information reading process: S106). The system outputs the read explanatory information to the audience terminal 11 (explanatory information output process: S107). The audience terminal 11 that receives the explanatory information displays the explanatory information on the display unit of the audience terminal (explanatory information display process: S108). EXAMPLES

[0033] An example of the explanation support method will be described below. Figure 3 is a conceptual diagram showing an example of the explanation support method using a computer. Voice input process (S101) The voice input step (S101) is a step in which voice is input to the voice input unit 5 of the system. For example, a lecturer is giving a lecture to students connected online using presentation materials. This lecture may be a live broadcast or may be a recorded or pre-recorded one.

[0034] Speech term acquisition step (S102) The speech term acquisition step (S102) is a step in which the speech analysis unit 7 of the system analyzes the terms contained in the input speech to obtain speech terms. For example, the speech analysis unit 7 analyzes the speech to obtain the following speech terms: "Diabetes is a disease in which blood glucose and hemoglobin A1c (HbA1c) levels remain chronically higher than normal. Diabetes develops when there is a lack or abnormality in the secretion of insulin, which delivers glucose from the blood to cells. For example, if a blood glucose level measured on an empty stomach in the morning is 126 mg / dl or higher, or if the blood glucose level is 200 mg / dl or higher regardless of whether a meal has been eaten or not, it is diagnosed as diabetes. Diabetes can occur in combination with various other diseases. There are type I and type II diabetes. There are three types of treatment for each type: Drug A, Drug B, and Drug C. Drug C is contraindicated for patients taking Drug D..."

[0035] Question Receiving Step (S103) The question receiving process (S103) is a process in which the question input unit 13 of the system receives the question (information related to the question) output from the audience terminal 11. For example, an icon related to the question is displayed on the display unit of the audience terminal. If this display unit is a touch panel, the question is output from the audience terminal 11 to the system by touching the icon (for example, a "?" icon).

[0036] Keyword matching process (S104) The keyword matching step (S104) is a step in which the output control unit 9 of the system matches the voice terms used up until the question is received with the keywords stored in the explanatory material storage unit 3 of the system. The explanatory material storage unit 3 stores a plurality of keywords related to the presentation and explanatory information related to each keyword. For example, the memory unit 3 stores the keywords "contraindicated," "drug D," and "drug C." The output control unit 9 then compares the voice terms with these keywords. Among the voice terms, "contraindicated," "drug D," and "drug C" are present before the question is input. In this way, the keywords are compared with the voice terms.

[0037] Extracted keyword acquisition step (S105) The extracted keyword acquisition step (S105) is a step in which the output control unit 9 of the system extracts keywords that match the collated speech terms and obtains the extracted keywords. For example, in this step, "taboo" is extracted from the speech terms as the extracted keyword immediately before the question. Also, "drug D" and "drug C" may be extracted from the speech terms as secondary candidate extracted keywords. In this case, in addition to the extracted keyword immediately before the question, the second closest keyword and the third closest keyword that receive the question may also be extracted and extracted as secondary candidate extracted keywords. Also, the extracted keywords may be displayed on the display unit of the audience terminal to allow the audience to select one. When the selection information is input to the audience terminal, the selection information is input to the system 1, and the extracted keyword is determined. Furthermore, the attributes of the audience and the adoption rate as the extracted keyword in the past may be stored, and for multiple keywords raised as candidates, the candidate with the highest adoption rate may be set as the extracted keyword, taking into account the attributes of the audience. In the example of FIG. 3, "drug C", "drug D" and "taboo" are displayed on the audience listening terminal. In addition, the candidate extracted keywords may be displayed on the audience terminal in the order of the candidate extracted keywords closest to the time the question was entered ("contraindicated", "drug D", "drug C"). For example, an audience member selects drug D. Then, information that drug D has been selected is input to the audience terminal. The audience terminal transmits information that drug D has been selected to system 1. Then, system 1 sets "drug D" as the extracted keyword. In this way, the extracted keyword is obtained.

[0038] Explanation information reading step (S106) The explanatory information reading process (S106) is a process in which the output control unit 9 of the system uses extracted keywords (extracted keywords immediately before the question, extracted keywords that are secondary candidates) to read explanatory information stored in association with the keywords in the explanatory material memory unit 3 of the system. The explanatory material storage unit 3 of the system stores explanatory information associated with keywords. Therefore, by using the extracted keyword, it is possible to read explanatory information associated with the keyword. For example, explanatory text or presentation materials associated with the keyword "Drug D" are stored. The system reads this explanatory information from the storage unit.

[0039] Explanation information output step (S107) The explanatory information output step (S107) is a step in which the output control unit 9 of the system outputs the read explanatory information to the audience terminal 11. The audience terminal 11 can receive the explanatory information and display the explanatory information on the display unit. If it is necessary to narrow down the explanatory information more precisely, the relevant keyword or a sentence containing the keyword may be displayed and selected. In addition, in this step, multiple candidates of explanatory information may be read from the storage unit. Then, multiple pieces of explanatory information or information related to multiple pieces of explanatory information (such as titles) may be transmitted to the audience terminal 11. Examples of multiple pieces of explanatory information are a presentation material for "Drug D", a PDF document for "Drug D", an explanatory text for "Drug D", "About the medicinal effects of Drug D", and "Explanation of Drug D". In this way, the multiple pieces of explanatory information may be types of explanatory information or titles. Then, the multiple pieces of explanatory information or multiple pieces of explanatory information (such as titles) are displayed on the display unit of the audience terminal 11. Then, the audience terminal 11 selects one of the pieces of explanatory information. Then, the selected explanatory information is displayed on the display unit of the audience terminal 11. Also, the fact that the explanatory information has been selected is input to the audience terminal 11 and output to the system. The system that receives this information may output the selected explanatory information to the audience terminal.

[0040] Explanation information display step (S108) The audience terminal 11 that receives the explanatory information displays the explanatory information on the display unit of the audience terminal. EXAMPLES

[0041] Figure 4 is a conceptual diagram showing an example of the timing of presentations and questions. Since general webinars do not include evaluations during the seminar, participants are less likely to participate and many drop out. This system can grasp if there are questions from the audience during the presentation. For example, this system tally up the questions in real time. Then, the number of tallied questions is displayed on the presenter's display. In a preferred embodiment, the total number of questions for a certain presentation may also be displayed. This allows the presenter to give a presentation while grasping whether the audience has understood his / her presentation. For example, if there are many questions, the presenter can increase the audience's understanding and satisfaction by using simple terms, presenting slowly, and skipping difficult slides. In other words, by collecting questionnaires during the presentation and giving the presentation while receiving evaluations, it is possible to give a presentation with a high level of understanding and satisfaction. EXAMPLES

[0042] FIG. 5 is a conceptual diagram showing an example of the relationship between questions and attributes. In this example, the audience terminal indicates an evaluation (understanding). For example, the audience terminal can output an evaluation such as "like" to the system during a presentation. In addition, for example, the system is configured to grasp the attributes of the audience operating the audience terminal. For example, the identification information of the audience terminal or the identification information of the audience and the attributes of the audience are stored in the memory unit, and the attributes of the audience can be read using the identification information of the audience terminal or the identification information of the audience. In this way, the analyzer performed at the lecture can be visualized in real time. The system can tally up the number of likes (evaluations) and the cumulative value of likes (evaluations) and display them on the presenter's display unit. Then, the presenter knows that he or she is being evaluated and can give a presentation with confidence. In addition, this makes it possible to make the webinar interactive. In addition, it is possible to memorize the slides that resonated with each attribute (slides that received many evaluations) and the corresponding parts of the audio of the explanation. Then, when giving an explanation to an audience with a certain attribute, it becomes possible to extract the slides that received high evaluations for that attribute. [Industrial Applicability]

[0043] This invention can be used in the information industry.

Claims

1. An explanatory material storage unit (3) that stores explanatory materials; A voice input unit (5) to which voice is input; a speech analysis unit (7) for analyzing terms contained in the speech to obtain speech terms; An output control unit (9) that outputs display information; A computer-based explanation support system (1), comprising: The explanatory material storage unit (3) stores explanatory information included in the explanatory material in association with a keyword, The explanation support system (1) includes an audience attribute memory unit (21) that stores the attributes of an audience, The system further includes a question input unit (13) for receiving questions from the audience terminal (11), The output control unit (9) extracts keywords contained in the speech terms analyzed by the speech analysis unit (7) before receiving the question from the question input unit (13) based on the attributes of the audience member who output the question, obtains extracted keywords, reads out the explanatory information associated with the extracted keywords from the explanatory material memory unit (3), and outputs it to the audience terminal (11), in this explanation support system (1).

2. The explanation support system (1) according to claim 1, The output control unit (9) extracts, from among the keywords contained in the speech terms analyzed by the speech analysis unit (7) before receiving the question from the question input unit (13), those keywords that have a high adoption rate in terms of the attributes of the audience who output the question as extracted keywords, reads out the explanatory information related to the extracted keywords from the explanatory material storage unit (3), and outputs it to the audience terminal (11), in this explanation support system (1).

3. The explanation support system (1) according to claim 1 or 2, The output control unit (9) extracts, as semi-candidate extracted keywords, keywords contained in the voice terms analyzed by the voice analysis unit (7) before receiving the question from the question input unit (13), including the extracted keyword immediately before the question, the second closest keyword to receive the question, and the third closest keyword, and from the semi-candidate extracted keywords, extracts, as extracted keywords, those with a high adoption rate in terms of the attributes of the audience who output the question, reads out the explanatory information related to the extracted keywords from the explanatory material memory unit (3), and outputs it to the audience terminal (11).This is an explanation support system (1).

4. The explanation support system (1) according to claim 1 or 2, The system further includes a question counting unit that counts the number of questions received by the question input unit (13) in real time, The output control unit (9) of the explanation support system (1) further outputs the number of questions counted by the question counting unit.

5. Computer, An explanatory material storage unit (3) that stores explanatory materials; A voice input unit (5) to which voice is input; a speech analysis unit (7) for analyzing terms contained in the speech to obtain speech terms; An output control unit (9) that outputs display information; An explanation support system (1) having: The explanatory material storage unit (3) stores explanatory information included in the explanatory material in association with a keyword, The explanation support system (1) includes an audience attribute memory unit (21) that stores the attributes of an audience, The system further includes a question input unit (13) for receiving questions from the audience terminal (11), The output control unit (9) is a program for functioning as an explanation support system (1) that extracts keywords contained in the speech terms analyzed by the speech analysis unit (7) before receiving the question from the question input unit (13) based on the attributes of the audience member who output the question, obtains extracted keywords, reads out the explanatory information related to the extracted keywords from the explanatory material storage unit (3), and outputs it to the audience terminal (11).

6. A computer-readable recording medium storing the program according to claim 5.

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