JP2015148441A - Device and method for position estimation, and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal device enabling its location to be properly estimated even if it cannot receive an electric wave from a GPS satellite.SOLUTION: The position estimation device (20) includes: first acquisition means (22) for acquiring voice information which indicates voices collected by a terminal device (20); determination means (24) for determining whether or not properties of the voice information match the prescribed properties; and estimation means (25) for estimating the location of the terminal device on the basis of the determination result of the determination means.

Description

  The present invention relates to a position estimation apparatus and method for estimating the position of a terminal apparatus and the like, and a computer program used in such a position estimation apparatus.

  GPS (Global Positioning System) is widely known as a representative example of a technique for estimating the position of a terminal device. When using the GPS, the terminal device receives radio waves from at least three GPS satellites and calculates the position coordinates of the terminal device from the position coordinates of each GPS satellite included in the received radio waves, The position of the terminal device is estimated.

  In addition, although it is not the literature which discloses the technique which estimates the position of a terminal device directly, there exist patent document 1 and patent document 2 as a prior art document relevant to this invention. In Patent Document 1, a program displayed on a video display terminal is specified by determining a similarity between a video feature value generated based on an input video signal and a pre-stored video feature value. Technology is disclosed. Patent Document 2 discloses a technique for deriving position information from physical signal information received from a receiving station and distributing information based on the position information to mobile communication terminals.

JP 2005-11294 A JP 2008-512039 A

  In order to use GPS, the terminal device must be located in an environment where radio waves from GPS satellites can be received. However, the terminal device is not always located in an environment where radio waves from GPS satellites can be received. For example, when the terminal device is located inside a building or underground, it may be difficult to estimate the position of the terminal device because the terminal device cannot receive radio waves from GPS satellites. is there.

  Examples of problems to be solved by the present invention include the above. It is an object of the present invention to provide a position estimation device and method capable of suitably estimating the position of a terminal device without using GPS, and a computer program that causes a computer to be executed as such a position estimation device. .

  In order to solve the above-described problem, the position estimation device according to the present invention includes first acquisition means for acquiring voice information indicating voice collected by a terminal device, and whether the characteristics of the voice information match predetermined characteristics. Determination means for determining whether or not, and estimation means for estimating the position of the terminal device based on the determination result of the determination means.

  In order to solve the above problems, the position estimation method of the present invention includes a first acquisition step of acquiring voice information indicating voice collected by a terminal device, and whether the characteristics of the voice information match predetermined characteristics. A determination step of determining whether or not, and an estimation step of estimating the position of the terminal device based on the determination result of the determination step.

  In order to solve the above problems, a computer program of the present invention causes a computer to execute the position estimation method of the present invention.

  Such an operation and gain of the present invention will be clarified from the embodiments described below.

It is a block diagram which shows notionally the basic composition of the position estimation system of a present Example. It is a flowchart which shows the flow of operation | movement of the DJ apparatus of a present Example. It is a flowchart which shows the flow of operation | movement of the portable terminal of a present Example. It is a block diagram which shows notionally the basic composition of the position estimation system of a 1st modification. It is a flowchart which shows the flow of operation | movement of DJ apparatus of a 1st modification. It is a flowchart which shows the flow of operation | movement of the portable terminal of a 1st modification. It is a block diagram which shows notionally the basic composition of the position estimation system of a 2nd modification.

  Hereinafter, as embodiments for carrying out the invention, embodiments according to the position estimation apparatus and method and the computer program of the present invention will be described in order.

(Embodiment of position estimation device)
<1>
The position estimation apparatus according to the present embodiment includes a first acquisition unit that acquires audio information indicating the audio collected by the terminal device, and a determination that determines whether or not the characteristics of the audio information match a predetermined characteristic Means and estimation means for estimating the position of the terminal device based on the determination result of the determination means.

  The position estimation apparatus of this embodiment can estimate the position of the terminal apparatus. For example, the position estimation device of the present embodiment can estimate whether the terminal device is located at a specific point. In order to estimate the position of the terminal device, the position estimation apparatus of the present embodiment includes a first acquisition unit, a determination unit, and an estimation unit.

  The first acquisition unit acquires audio information. Here, the voice information acquired by the first acquisition means is directly the voice collected by the terminal device (for example, the voice collected by using the voice collecting means such as a microphone provided in the terminal device). Or information shown indirectly. That is, the first acquisition unit may acquire, as audio information, any information that can specify the audio collected by the terminal device in some form. For example, the first acquisition unit may acquire the voice collected by the terminal device as voice information. For example, a 1st acquisition means may acquire the information obtained by performing a predetermined process with respect to the audio | voice currently collected by the terminal device as audio | voice information.

  Whether the characteristic of the audio information acquired by the first acquisition unit (in other words, the characteristic of the audio information, for example, the name, tone, tempo, etc. of the audio indicated by the audio information) matches the predetermined characteristic. Determine whether or not. That is, the determination unit determines whether or not the audio information acquired by the first acquisition unit has a predetermined characteristic. For example, when the characteristic is tempo, the determination unit may determine whether or not the tempo of the audio information acquired by the first acquisition unit matches a predetermined tempo “AA”. For example, when the characteristic is a tune, the determination unit may determine whether or not the tune of the audio information acquired by the first acquisition unit matches a predetermined tune of “BB”. Of course, even when the characteristic is an arbitrary characteristic other than the tempo and the tune, similarly, the determination unit determines whether or not the characteristic of the audio information matches the predetermined characteristic.

  The estimating means estimates the position of the terminal device (that is, the terminal device collecting sound) based on the determination result of the determining means. For example, the estimation means may estimate that the terminal device is located at a specific point when the determination result of the determination means is the first determination result. For example, the estimation unit may estimate that the terminal device is not located at a specific point when the determination result of the determination unit is not the first determination result. For example, the estimation means may estimate that the terminal device is located at the first specific point when the determination result of the determination means is the first determination result. For example, when the determination result of the determination means is a second determination result that is different from the first determination result, the estimation unit is located at a second specific point that is different from the first specific point. It may be estimated.

  Here, the voice flowing at a specific point often has some characteristic (in other words, a characteristic). Therefore, when the collected sound has some kind of unique characteristic, the terminal device collecting the sound is located at a specific point where such sound is flowing. It is estimated that there is a high possibility. For example, when the sound collected by the terminal device has a characteristic specific to a piece of music that is flowing in a club located at a specific point, the terminal device uses the club in which the piece of music is flowing. (In other words, it is estimated that there is a high possibility of being located at a specific point). For this reason, the position estimation device according to the present embodiment is based on the determination result of whether or not the characteristics of the voice information indicating the voice collected by the terminal apparatus match the predetermined characteristics. The position can be estimated appropriately.

  In addition, the position estimation apparatus of the present embodiment can preferably estimate the position of the terminal apparatus without using GPS. Therefore, the position estimation apparatus according to the present embodiment can preferably estimate the position of the terminal apparatus even when the terminal apparatus cannot receive radio waves from GPS satellites.

<2>
In another aspect of the position estimation apparatus of the present embodiment, the predetermined characteristic is a characteristic of a predetermined musical piece, and the estimation unit determines that the characteristic of the audio information matches the characteristic of the predetermined musical piece. In this case, it is estimated that the terminal device is located at a specific point where the predetermined music is reproduced.

  According to this aspect, the position estimation device determines the position of the terminal device based on the determination result of whether or not the characteristic of the audio information indicating the sound collected by the terminal apparatus matches the characteristic of the predetermined music. It can be estimated suitably. Specifically, for example, when the characteristics of the audio information match the characteristics of the predetermined music, the terminal device that collects the sound indicated by the audio information is the specific point where the predetermined music is being reproduced. It is estimated that there is a high possibility of being located. Therefore, the position estimation device determines whether or not the music is being reproduced based on the determination result of whether or not the characteristic of the audio information indicating the sound collected by the terminal device matches the characteristic of the predetermined music. It can be suitably estimated whether or not the terminal device is located.

  The coincidence between the characteristics of the audio information and the characteristics of the predetermined music may substantially correspond to the coincidence between the audio information and the predetermined music. Therefore, the determination unit may determine whether or not the voice information (in other words, the voice collected by the terminal device) matches a predetermined music piece. The estimation means may estimate that the terminal device is located at a specific point where the predetermined music is reproduced when it is determined that the audio information matches the predetermined music.

<3>
In another aspect of the position estimation apparatus of the present embodiment, the predetermined characteristic is a characteristic of a predetermined piece of music being played back by a playback device located at a specific point, and the estimation means When it is determined that the characteristic matches the characteristic of the predetermined music, it is estimated that the terminal device is located at the specific point where the playback device is located.

  According to this aspect, in the position estimation device, the characteristic of the audio information indicating the sound collected by the terminal device matches the characteristic of the predetermined music being reproduced by the reproduction device located at the specific point. Based on the determination result, it is possible to suitably estimate the position of the terminal device. Specifically, for example, when the characteristics of the audio information match the characteristics of a predetermined music being played back by a playback device located at a specific point, the voice indicated by the voice information is collected. It is estimated that the terminal device is likely to be located at a specific point where the playback device that plays the predetermined music is located. Therefore, the position estimation device determines whether or not the characteristic of the audio information indicating the sound collected by the terminal device matches the characteristic of the predetermined music being reproduced by the reproduction device located at the specific point. Based on the determination result, it can be suitably estimated whether or not the terminal device is located at the specific point where the playback device is located.

<4>
In another aspect of the position estimation apparatus of the present embodiment, the position estimation device further includes second acquisition means for acquiring characteristic information indicating the predetermined characteristic and position information indicating a specific point associated with the predetermined characteristic, and The means determines whether or not the characteristic of the voice information matches the predetermined characteristic indicated by the characteristic information, and the estimation means determines that the characteristic of the voice information matches the predetermined characteristic In this case, it is estimated that the terminal device is located at the specific point indicated by the position information.

  According to this aspect, the second acquisition means acquires a set of characteristic information and position information. For this reason, the position estimation device can appropriately recognize the association between the “predetermined characteristic” referred to by the determination unit and the “specific point” estimated by the estimation unit as the position of the terminal device. That is, the position estimation device estimates that the terminal device is located at a specific point indicated by the position information associated with the characteristic information when the characteristic of the voice information matches the predetermined characteristic indicated by the characteristic information. can do. Therefore, the position estimation apparatus can estimate the position of the terminal apparatus more appropriately.

  In the position estimation device that estimates that the terminal device is located at a specific point where the predetermined music is reproduced when it is determined that the characteristics of the audio information match the characteristics of the predetermined music, the second acquisition unit Preferably, as the characteristic information and the position information, characteristic information indicating characteristics of a predetermined music piece and position information indicating a specific point where the predetermined music piece is reproduced are acquired. Further, in the position estimation device that estimates that the terminal device is located at a specific point where the playback device is located when it is determined that the characteristics of the audio information match the characteristics of the predetermined music, the second acquisition means As the characteristic information and the position information, it is preferable to acquire characteristic information indicating characteristics of a predetermined music being reproduced by the reproduction apparatus and position information indicating a specific point where the reproduction apparatus is located.

<5>
In another aspect of the position estimation apparatus including the second acquisition unit as described above, the second acquisition unit acquires the characteristic information and the position information from an external device connected to the position estimation apparatus via a network. .

  According to this aspect, the second acquisition unit can preferably acquire the characteristic information and the position information.

(Embodiment of position estimation method)
<6>
The position estimation method of the present embodiment includes a first acquisition step of acquiring voice information indicating the voice collected by the terminal device, and a determination of determining whether or not the characteristics of the voice information match a predetermined characteristic And an estimation step of estimating the position of the terminal device based on the determination result of the determination step.

  According to the position estimation method of the present embodiment, it is possible to receive the same benefits as the various benefits of the position estimation device of the present embodiment described above. Incidentally, in response to the various aspects of the position estimation apparatus of the present embodiment described above, the position estimation method of the present embodiment can also adopt various aspects.

(Embodiment of computer program)
<7>
The computer program of the present embodiment causes a computer to execute the above-described position estimation method of the present embodiment (including various aspects thereof).

  According to the computer program of the present embodiment, it is possible to receive the same benefits as the various benefits of the position estimation device of the present embodiment described above. Incidentally, in response to the various aspects of the position estimation apparatus of the present embodiment described above, the computer program of the present embodiment can also adopt various aspects.

  Such an operation and other advantages of the present embodiment will be further clarified from examples described below.

  As described above, the position estimation apparatus of the present embodiment includes the first acquisition unit, the determination unit, and the estimation unit. The position estimation method of this embodiment includes a first acquisition step, a determination step, and an estimation step. The computer program of this embodiment causes a computer to execute the position estimation method of this embodiment. Therefore, even when the terminal device cannot receive radio waves from GPS satellites, the position of the terminal device can be estimated appropriately.

  Embodiments of a position estimation apparatus, a position estimation method, and a computer program according to the present invention will be described below with reference to the drawings. In the following, description will be given using an example in which the position estimation device, the position estimation method, and the computer program are applied to the portable terminal 20 which is a specific example of “terminal device”.

(1) Basic Configuration of Position Estimation System 1 First, the basic configuration of the position estimation system 1 of the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram conceptually showing the basic structure of the position estimation system 1 of the present embodiment.

  As shown in FIG. 1, the position estimation system 1 includes a DJ (Disc Jockey) device 10 that is a specific example of a “playback device”, and a mobile terminal that is a specific example of a “terminal device” and a “position estimation device”. 20. FIG. 1 shows an example in which the position estimation system 1 includes one DJ device 10 and one mobile terminal 20. However, the position estimation system 1 may include two or more DJ devices 10. The position estimation system 1 may include two or more mobile terminals 20.

  Hereinafter, the DJ device 10 and the mobile terminal 20 will be described in order.

(1-1) Basic Configuration of DJ Device 10 The DJ device 10 continuously reproduces music while adding various special effects (effects) to a ballroom such as a club or disco. Such a DJ device 10 is typically operated by a DJ which is a specific example of a “player”.

  As shown in FIG. 1, the DJ device 10 includes a reproduction unit 11, a music acquisition unit 12, a position registration unit 13, and a communication unit 14.

  The reproduction unit 11 reproduces the music in a reproduction mode according to the operation content of the DJ.

  The music acquisition unit 12 acquires music information indicating the music to be played back by the playback unit 11. The music information may be information (for example, an audio signal itself) that directly indicates the music that the playback unit 11 plays. The music information may be information that indirectly indicates the music that the playback unit 11 plays (for example, information that indicates the characteristics of the music). Hereinafter, for simplification of description, the music information is assumed to be information indicating the characteristics (for example, name, tempo, and tone) of the music reproduced by the reproducing unit 11. The music information is a specific example of “characteristic information”.

  The position registration unit 13 registers position information indicating a location where the DJ device 10 is installed. For example, the position registration unit 13 may register the position information by detecting the location where the DJ device 10 is installed by an arbitrary method. Alternatively, for example, the position registration unit 13 may register the position information by referring to the information regarding the location manually input to the DJ device 10.

  The communication unit 14 communicates with the mobile terminal 20 via a wired or wireless network 40. In particular, in this embodiment, the communication unit 14 transmits the music information acquired by the music acquisition unit 12 and the position information registered by the position registration unit 13 to the mobile terminal 20.

  Note that at least one of the playback unit 11, the music acquisition unit 12, the position registration unit 13, and the communication unit 14 is realized by executing a computer program on a CPU (Central Processing Unit) included in the DJ device 10. It may be a logical processing block (functional block). Alternatively, at least one of the reproduction unit 11, the music acquisition unit 12, the position registration unit 13, and the communication unit 14 may be a physical circuit included in the DJ device 10.

(1-2) Basic Configuration of Mobile Terminal 20 As shown in FIG. 1, the mobile terminal 20 includes a communication unit 21 that is a specific example of “second acquisition means” and a specific example of “first acquisition means”. A sound collection unit 22, a music analysis unit 23 which is a specific example of "first acquisition means", a comparison unit 24 which is a specific example of "determination means", and a specific example of "estimation means". A position estimation unit 25.

  The communication unit 21 communicates with the DJ device 10 via the network 40. In particular, in the present embodiment, the communication unit 21 receives music information and position information transmitted by the DJ device 10.

  The sound collection unit 22 collects sound around the mobile terminal 20. Such a sound collecting unit 22 may be a microphone, for example.

  The music analysis unit 23 analyzes the sound collected by the sound collection unit 22. For example, the music analysis unit 23 may acquire the characteristics (for example, name, tempo, and tune) of the sound collected by the sound collection unit 22 by analyzing the sound collected by the sound collection unit 22.

  The comparison unit 24 analyzes the analysis result of the music analysis unit 23 (for example, the characteristics of the sound collected by the sound collection unit 22) and the music information received by the communication unit 21 (for example, the characteristics of the music reproduced by the reproduction unit 11). And compare.

  The position estimation unit 25 estimates the position of the mobile terminal 20 based on the comparison result of the comparison unit 24. Below, the position estimation part 25 shall estimate whether the portable terminal 20 is located in the location where the DJ apparatus 10 is installed based on the comparison result of the comparison part 24. FIG.

  Note that at least one of the communication unit 21, the sound collection unit 22, the music analysis unit 23, the comparison unit 24, and the position estimation unit 25 is realized by executing a computer program on the CPU included in the mobile terminal 20. It may be a logical processing block (functional block). Alternatively, at least one of the communication unit 21, the sound collection unit 22, the music analysis unit 23, the comparison unit 24, and the position estimation unit 25 may be a physical circuit included in the mobile terminal 20.

(2) Operation of Position Estimation System 1 Subsequently, the operation of the position estimation system 1 will be described with reference to FIGS. Below, for convenience of explanation, the operation of the DJ device 10 and the operation of the mobile terminal 20 will be described in order.

(2-1) Operation of DJ device 10 First, the operation of the DJ device 10 will be described with reference to FIG. FIG. 2 is a flowchart showing the operation flow of the DJ device 10.

  As shown in FIG. 2, when the DJ device 10 is first installed at a predetermined location (for example, a club), as an initial operation, the position registration unit 13 is a position indicating the location where the DJ device 10 is installed. Information is registered (step S11). The position information registered by the position registration unit 13 may be stored as an operation parameter of the DJ device 10 in a memory included in the DJ device 10. As described above, the position registration unit 13 may register the position information using an arbitrary method.

  Thereafter, the playback unit 11 plays back the music (step S12). For example, the reproducing unit 11 reads music data recorded on a recording medium (for example, an optical disk such as a CD or a semiconductor memory such as a USB memory) mounted on the DJ device 10 to reproduce the music. Good.

  At this time, the playback unit 1 plays back the music in a playback mode according to the operation content of the DJ. For example, when the DJ performs an operation of turning the turntable included in the DJ device 10 in the forward direction (clockwise), the playback unit 11 may forward play the music. For example, when the DJ performs an operation of turning the turntable included in the DJ device 10 in the reverse direction (counterclockwise), the playback unit 11 may reversely play the music. For example, when the DJ performs an operation of pressing an effect button included in the DJ device 10, the playback unit 11 may play the music while adding an effect corresponding to the pressed effect button.

  In parallel with the reproduction of the music by the reproduction unit 11, the music acquisition unit 12 acquires music information indicating the music reproduced by the reproduction unit 11 (step S12). Note that, as described above, the music acquisition unit 12 acquires music information indicating the characteristics (for example, name, tempo, and tone) of the music reproduced by the reproduction unit 11. For example, the music acquisition unit 12 may acquire music information by analyzing music data recorded on a recording medium attached to the DJ device 10 (that is, music data read by the playback unit 11). . Alternatively, when music information is included in the music data, the music acquisition unit 12 may acquire the music information included in the music data as it is. In any case, the music acquisition unit 12 acquires music information indicating the default characteristics of music to be played back by the playback unit 11 (that is, the characteristics of music that does not reflect the operation details of DJ). However, the music acquisition unit 12 may acquire music information indicating the characteristics of the music being played back by the playback unit 11 (that is, the characteristics of the music reflecting the operation contents of the DJ).

  Thereafter, the communication unit 14 determines whether or not the mobile terminal 20 requests transmission of the position information registered by the position registration unit 13 in step S11 and the music information acquired by the music acquisition unit 12 in step S13 ( Step S14). For example, the communication unit 14 may determine whether or not a request message for requesting transmission of position information and music information is transmitted from the mobile terminal 20 to the DJ device 10.

  As a result of the determination in step S14, when it is determined that the mobile terminal 20 requests transmission of position information and music information (step S14: Yes), the communication unit 14 transmits the music information and position information to the mobile terminal. 20 is transmitted (step S15). Note that the communication unit 14 preferably transmits both the music information and the position information to the portable terminal 20 as a set. In other words, the communication unit 14 transmits one of the music information and the position information to the mobile terminal 20 and does not transmit the other of the music information and the position information to the mobile terminal 20. It is preferable not to perform.

(2-2) Operation of Mobile Terminal 20 Next, the operation of the mobile terminal 20 will be described with reference to FIG. FIG. 3 is a flowchart showing an operation flow of the mobile terminal 20.

  As shown in FIG. 3, the sound collection unit 22 collects sound around the mobile terminal 20 (step S21). The sound collection unit 22 transfers a sound signal indicating the collected sound to the music analysis unit 22.

  Thereafter, the music analysis unit 23 analyzes the sound collected by the sound collection unit 22 (step S22). For example, the music analysis unit 23 represents the sound collected by the sound collection unit 22 through an analysis process that can calculate the characteristics of the sound collected by the sound collection unit 22 (for example, name, tempo, and tune). You may perform with respect to an audio | voice signal. As a result, the music analysis unit 23 acquires the characteristics of the sound collected by the sound collection unit 22. The music analysis unit 23 transfers the acquired audio characteristics to the comparison unit 24.

  Following the operation from step S21 to step S22, or before or after or in parallel, the communication unit 21 requests the DJ device 10 to transmit position information and music information (step S23). For example, the communication unit 21 may transmit a request message for requesting transmission of position information and music information to the DJ device 10.

  In response to such a request message, the DJ device 10 transmits position information and music information to the mobile terminal 20 (step S15 in FIG. 2). Accordingly, the communication unit 21 receives the position information and music information transmitted by the DJ device 10 (step S24).

  Thereafter, the comparison unit 24 analyzes the analysis result of the music analysis unit 23 in step S22 (that is, the characteristics of the sound collected by the sound collection unit 22) and the music information received by the communication unit 21 in step S24 (that is, playback). The characteristics of the music reproduced by the unit 11 are compared (step S25). Specifically, the comparison unit 24 determines whether or not the analysis result of the music analysis unit 23 in step S22 matches the music information received by the communication unit 21 in step S24 (step S25).

  As a result of the determination in step S25, when it is determined that the analysis result of the music analysis unit 23 matches the music information (step S25: Yes), the sound collected by the sound collection unit 22 and the playback unit 11 Is likely to be the same as the music being played. When it is relatively likely that the sound collected by the sound collection unit 22 and the music reproduced by the reproduction unit 11 are the same, the mobile terminal 20 collecting the sound is It is estimated that there is a relatively high possibility that the DJ device 10 that reproduces the image is located at the location where the DJ device 10 is installed. In other words, when there is a relatively high possibility that the sound collected by the sound collecting unit 22 and the music reproduced by the reproducing unit 11 are the same, the mobile terminal 20 collecting the sound. However, it is estimated that there is a relatively high possibility that the DJ device 10 is located in a location where the music being played back can be viewed.

  The location where the DJ device 10 is installed is indicated by position information transmitted from the DJ device 10 to the portable terminal 20 together with the music information. Therefore, when it is determined that the analysis result of the music analysis unit 23 matches the music information (step S25: Yes), the position estimation unit 25 is located at the location indicated by the position information received by the communication unit 31 in step S24. The mobile terminal 20 is estimated to be located (step S26). That is, the position estimation unit 25 estimates that the mobile terminal 20 is located at the location where the DJ device 10 is installed (step S26).

  If it is determined that the analysis result of the music analysis unit 23 matches the music information, the sound collected by the sound collection unit 22 and the music reproduced by the reproduction unit 11 may be the same. In consideration of the fact that the performance is estimated to be relatively high, the comparison unit 24 substantially matches the sound collected by the sound collection unit 22 and the music reproduced by the reproduction unit 11. It can be said that it is determined whether or not to do. Therefore, the operation of determining whether or not the analysis result of the music analysis unit 23 by the comparison unit 24 matches the music information is substantially the same as the sound collected by the sound collection unit 22 and the reproduction unit 11. It can be said that this is an operation for determining whether or not the music being reproduced matches. That is, it can be said that the comparison unit 24 determines whether the sound collected by the sound collection unit 22 matches the music reproduced by the reproduction unit 11.

  On the other hand, as a result of the determination in step S25, when it is determined that the analysis result of the music analysis unit 23 and the music information do not match (step S25: No), the sound collected by the sound collection unit 22 and It is estimated that the possibility that the music reproduced by the reproducing unit 11 is the same is relatively low. When it is relatively unlikely that the sound collected by the sound collecting unit 22 and the music reproduced by the reproducing unit 11 are the same, the mobile terminal 20 collecting the sound It is estimated that there is a relatively low possibility that the DJ device 10 that is playing the video is located at the location where the DJ device 10 is installed. In other words, when it is relatively unlikely that the sound collected by the sound collection unit 22 and the music reproduced by the reproduction unit 11 are the same, the mobile terminal 20 collecting the sound. However, it is estimated that there is a relatively low possibility that the DJ device 10 is located in a location where the music being played back can be viewed.

  Therefore, when it is determined that the analysis result of the music analysis unit 23 and the music information do not match (step S25: No), the position estimation unit 25 indicates the location indicated by the position information received by the communication unit 31 in step S24. It is estimated that the mobile terminal 20 is not located (step S27). That is, the position estimation unit 25 estimates that the mobile terminal 20 is not located at the location where the DJ device 10 is installed (step S27).

  Thus, in the position estimation system 1 of the present embodiment, the mobile terminal 20 determines whether or not the characteristics of the sound collected by the mobile terminal 20 match the characteristics of the music being played back by the DJ device 10. Based on the determination result, the position of the mobile terminal 20 can be estimated appropriately. That is, the mobile device 20 is installed on the DJ device 10 based on the determination result of whether or not the characteristics of the sound collected by the mobile device 20 match the characteristics of the music being played by the DJ device 10. Whether or not the mobile terminal 20 is located at the location where it is set can be estimated appropriately.

  In particular, in the present embodiment, the mobile terminal 20 can estimate the position of the mobile terminal 20 using voice around the mobile terminal 20. Therefore, the position estimation system 1 according to the present embodiment estimates whether or not the mobile terminal 20 is located in a specific space where music such as a club flows (or any space where desired music flows). It is extremely useful when doing.

  In addition, the mobile terminal 20 of the present embodiment can preferably estimate the position of the mobile terminal 20 without using GPS. Therefore, the mobile terminal 20 of the present embodiment can suitably estimate the position of the mobile terminal 20 even when the mobile terminal 20 cannot receive radio waves from GPS satellites. In particular, in consideration of the fact that it is often difficult to use GPS in a club or the like due to the club or the like being in a building or in the basement, the position estimation system 1 of the present embodiment is capable of receiving music such as a club. This is extremely useful in estimating whether or not the mobile terminal 20 is located in a specific closed space that is flowing.

  In addition, in the present embodiment, the mobile terminal 20 can receive music information and position information transmitted from the DJ device 10. For this reason, the mobile terminal 20 can appropriately recognize the association between the “voice characteristics” collected by the mobile terminal 20 and the “location” where the mobile terminal 20 will be located. In other words, the mobile terminal 20 is “location of the music” collected by the mobile terminal 20 and “location” where the music is played (that is, the DJ device 10 that plays the music is installed). Can be suitably recognized. Therefore, the DJ device 10 is installed in the mobile terminal 20 based on the determination result of whether or not the characteristics of the sound collected by the mobile terminal 20 match the music information transmitted from the DJ device 10. It can be suitably estimated whether or not the mobile terminal 20 is located at a certain location.

  In addition, since the mobile terminal 20 receives the music information and the position information from the DJ device 10, the mobile terminal 20 can appropriately acquire different sets of music information and position information. Alternatively, the mobile terminal 20 can acquire a plurality of sets of music information and position information. For this reason, even when the mobile terminal 20 moves (as a result, the sound collected by the mobile terminal 20 changes), the mobile terminal 20 can preferably estimate the position of the mobile terminal 20. For example, it is assumed that the mobile terminal 20 initially receives a set of music information indicating the characteristic “X1” and position information indicating the location “Y1”. In this case, the mobile terminal 20 moves the mobile terminal 20 to the location “Y1” based on the determination result of whether or not the characteristic of the sound collected by the mobile terminal 20 is “X1”. It can be estimated whether it is located. After that, for example, in accordance with the movement of the mobile terminal 20, the mobile terminal 20 newly receives a set of music information indicating the characteristic “X2” and position information indicating the location “Y2”. To do. In this case, the mobile terminal 20 moves the mobile terminal 20 to the location “Y2” based on the determination result of whether or not the characteristic of the sound collected by the mobile terminal 20 is the characteristic “X2”. It can be estimated whether it is located.

  Alternatively, since the mobile terminal 20 can appropriately acquire different sets of music information and position information or can acquire a plurality of sets of music information and position information, the mobile terminal 20 is stationary or hardly moves. Even if the sound around the portable terminal 20 changes with the passage of time, the portable terminal 20 can preferably estimate the position of the portable terminal 20. In other words, even when the music played back by the DJ device 10 is changed under a situation where the mobile terminal 20 is stationary or hardly moves, the mobile terminal 20 preferably adjusts the position of the mobile terminal 20. Can be estimated. For example, it is assumed that the mobile terminal 20 initially receives a set of music information indicating the characteristic “X1” and position information indicating the location “Y1”. In this case, the mobile terminal 20 moves the mobile terminal 20 to the location “Y1” based on the determination result of whether or not the characteristic of the sound collected by the mobile terminal 20 is “X1”. It can be estimated whether it is located. Thereafter, for example, it is assumed that the mobile terminal 20 newly receives a set of music information indicating the characteristic “X2” and position information indicating the location “Y1” as time passes. In this case, the mobile terminal 20 moves the mobile terminal 20 to the location “Y1” based on the determination result of whether or not the characteristic of the sound collected by the mobile terminal 20 is “X2”. It can be estimated whether it is located.

  In the above description, the portable terminal 20 estimates the position of the portable terminal 20 by comparing the characteristics of the sound collected by the sound collection unit 22 and the characteristics of the music reproduced by the reproduction unit 11. . However, in addition to or in place of comparing the characteristics of the sound collected by the sound collection unit 22 and the characteristics of the music reproduced by the reproduction unit 11, the mobile terminal 20 You may estimate the position of the portable terminal 20 by comparing with the music which the reproducing part 11 reproduces directly or indirectly.

  In the above description, the description has been made using the distribution system 1 including the DJ device 10 and the mobile terminal 20. However, the position estimation system 1 may include an arbitrary playback device installed at an arbitrary location in addition to or instead of the DJ device 10. The position estimation system 1 may include an arbitrary terminal device located at an arbitrary location in addition to or instead of the mobile terminal 20.

(3) Modified Example Next, a modified example of the position estimation system will be described. In addition, about the component and operation | movement similar to the position estimation system 1 mentioned above, the same referential mark and the same step number are attached | subjected, and those detailed description is abbreviate | omitted.

(3-1) Position estimation system 1a of the first modified example
First, the position estimation system 1a according to the first modification will be described with reference to FIGS.

(3-1-1) Basic Configuration of Position Estimation System 1a of First Modification First, the basic configuration of the position estimation system 1a of the first modification will be described with reference to FIG. FIG. 4 is a block diagram conceptually showing the basic structure of the position estimation system 1a of the first modification.

  As shown in FIG. 4, in the position estimation system 1a of the first modified example, the DJ device 10a further includes an operation content analysis unit 15a and the mobile terminal 20a has an analysis result compared to the position estimation system 1 described above. The difference is that it further includes a correction unit 26a.

  The operation content analysis unit 15a analyzes the operation content of the DJ. The operation information indicating the operation content of the DJ analyzed by the operation content analysis unit 15a is transmitted from the DJ device 10a to the portable terminal 20a together with the music information and the position information.

  The analysis result correction unit 26a corrects the analysis result of the music analysis unit 23 based on the operation information transmitted from the DJ device 10a. In this case, in addition to or instead of comparing the analysis result of the analysis unit 23 and the music information transmitted from the DJ device 10a, the comparison unit 24 and the analysis result corrected by the analysis result correction unit 26a and the DJ device 10a. Analyzing the operation content to be compared with the music information transmitted from the.

  Hereinafter, details of operations of the operation content analysis unit 15a and the analysis result correction unit 26a will be further described while explaining operations of the DJ device 10a and the mobile terminal 20a of the first modification.

(3-1-2) Operation of DJ Device 10a First, the operation of the DJ device 10a of the first modification will be described with reference to FIG. FIG. 5 is a flowchart showing an operation flow of the DJ device 10a according to the first modification.

  As shown in FIG. 5, also in the first modified example, the DJ device 10a performs the operations from step S11 to step S13 as in the above-described embodiment. That is, the position registration unit 13 registers the position information (step S11), the reproduction unit 11 reproduces the music (step S12), and the music acquisition unit 12 acquires the music information (step S13).

  Thereafter, in the first modification, the operation content analysis unit 15a analyzes the operation content of the DJ (step S16a). Specifically, for example, the operation content analysis unit 15a is configured so that the DJ operates the operators (for example, various buttons such as a turntable, an effect button, and various sliders such as a tempo slider) provided in the DJ device 10a. Analyzing whether or not In this case, the operation content analysis unit 15a may analyze the operation content of the DJ by analyzing operation signals output from various operators. The operation content analysis unit 15a further generates operation information indicating the operation content of the analyzed DJ.

  Thereafter, the communication unit 14 uses the location information registered by the location registration unit 13 in step S11, the operation information generated by the operation content analysis unit 15a in step S16a, and the music acquired by the music acquisition unit 12 in step S13. It is determined whether or not information transmission is requested (step S14a). For example, the communication unit 14 may determine whether or not a request message requesting transmission of position information, operation information, and music information is transmitted from the mobile terminal 20a to the DJ device 10a.

  As a result of the determination in step S14a, when it is determined that the mobile terminal 20a is requesting transmission of position information, operation information, and music information (step S14a: Yes), the communication unit 14 determines the music information, operation information. And position information is transmitted with respect to the portable terminal 20a (step S15a). The communication unit 14 preferably transmits all of the music information, operation information, and position information to the mobile terminal 20 as a set. That is, the communication unit 14 transmits part of the music information, operation information, and position information to the mobile terminal 20 and transmits the other part of the music information, operation information, and position information to the mobile terminal 20. However, it is preferable not to perform the operation of not transmitting.

(3-1-3) Operation of Mobile Terminal 20a Subsequently, the operation of the mobile terminal 20a of the first modification will be described with reference to FIG. FIG. 6 is a flowchart showing an operation flow of the mobile terminal 20a of the first modified example.

  As shown in FIG. 6, also in the first modified example, the portable terminal 20a performs the operations from step S21 to step S22 as in the above-described embodiment. That is, the sound collection unit 22 collects sound around the mobile terminal 20a (step S21), and the music analysis unit 23 analyzes the sound collected by the sound collection unit 22 (step S22).

  Following the operation from step S21 to step S22, before or after or in parallel, the communication unit 21 requests the DJ device 10a to transmit position information, operation information, and music information (step S23a). . For example, the communication unit 21 may transmit a request message for requesting transmission of position information, operation information, and music information to the DJ device 10a.

  In response to such a request message, the DJ device 10a transmits position information, operation information, and music information to the mobile terminal 20a (step S15a in FIG. 5). Accordingly, the communication unit 21 receives the position information, operation information, and music information transmitted by the DJ device 10a (step S24a).

  Thereafter, the analysis result correction unit 26a corrects the analysis result of the music analysis unit 23 in step S22 based on the operation information received in step S23a (step S28a). For example, when the music analysis unit 23 performs an analysis process for acquiring the tempo of the sound and the operation information indicates the operation amount of the tempo slider, the analysis result correction unit 26 a is acquired by the music analysis unit 23. The tempo of the sound is corrected according to the operation amount of the tempo slider indicated by the operation information. This is because the music analysis unit 23 analyzes the sound actually collected by the sound collection unit 22, and the operation contents of the DJ are reflected in the analysis result of the music analysis unit 23. On the other hand, since the music information transmitted from the DJ device 10 indicates the default characteristics of the music, the operation contents of the DJ are not reflected. Therefore, if the analysis result is not corrected based on the operation information, the analysis result reflecting the DJ operation content and the DJ operation content are reflected under a situation where it is determined that the analysis result and the music information match. There is a possibility that it is determined that the music information that has not been matched does not match. For this reason, the analysis result correction unit 26a corrects the analysis result reflecting the DJ operation content to an analysis result not reflecting the DJ operation content by correcting the analysis result based on the operation information. Yes.

  It should be noted that, in a situation where it is determined that the analysis result and the music information match, the analysis result reflecting the DJ operation content and the music information not reflecting the DJ operation content do not coincide with each other. From the point of view, the analysis result correction unit 26a may correct the music information based on the operation information instead of correcting the analysis result based on the operation information. That is, the analysis result correction unit 26a may correct the music information that does not reflect the operation details of the DJ to the music information that reflects the operation details of the DJ.

  Thereafter, the comparison unit 24 corrects the analysis result of the analysis result music analysis unit 23 corrected by the analysis result correction unit 26a in step S28a (that is, the characteristics of the sound collected by the sound collection unit 22 based on the operation information). And the music information received by the communication unit 21 in step S24 (that is, the characteristics of the music played back by the playback unit 11) (step S25a). Specifically, the comparison unit 24 determines whether or not the analysis result corrected by the analysis result correction unit 26a in step S28a matches the music information received by the communication unit 21 in step S24 (step S25a). .

  As a result of the determination in step S25a, when it is determined that the analysis result corrected by the analysis result correction unit 26a matches the music information (step S25a: Yes), the position estimation unit 25 determines that the communication unit 31 in step S24. It is estimated that the mobile terminal 20 is located at the location indicated by the received position information (step S26).

  On the other hand, as a result of the determination in step S25a, when it is determined that the analysis result corrected by the analysis result correction unit 26a and the music information do not match (step S25a: No), the position estimation unit 25 determines in step S24. It is estimated that the mobile terminal 20 is not located at the location indicated by the position information received by the communication unit 31 (step S27).

  Thus, also in the position estimation system 1a of the first modification, the mobile terminal 20a can preferably estimate whether the mobile terminal 20a is located at the location where the DJ device 10 is installed.

  Note that the operation information is used in the first modification because the music information transmitted from the DJ device 10 to the mobile terminal 20 shows the default characteristics of the music. On the other hand, the DJ device 10 may acquire music information that indicates music characteristics and reflects the operation contents of the DJ, instead of music information that indicates the default characteristics of the music. In this case, the operation information may not be used.

(3-2) Position estimation system 1b of the second modified example
Subsequently, a position estimation system 1b according to a second modification will be described with reference to FIG. FIG. 7 is a block diagram conceptually showing the basic structure of a position estimation system 1b in the second modification.

  As shown in FIG. 7, it is said that the position estimation system 1b of the second modified example further includes a processing server 30b including a communication unit 31b and a storage unit 32b, as compared with the position estimation system 1 described above. It is different in point.

  The communication unit 31 b communicates with at least one of the DJ device 10 and the mobile terminal 20 via the network 40.

  In particular, the communication unit 31b receives music information and position information transmitted by the communication unit 14 included in the DJ device 10. For this reason, in the second modification, the communication unit 14 included in the DJ device 10 transmits the music information and the position information to the processing server 30b in addition to or instead of the DJ device 20. The music information and position information received by the communication unit 31b are stored in the storage unit 32b, which is a memory or the like, for example.

  Further, the communication unit 31b transmits the music information and the position information stored in the storage unit 32b to the mobile terminal 20 when the mobile terminal 20 requests transmission of the position information and the music information. For this reason, in the second modification, the communication unit 21 included in the mobile terminal 20 requests the processing server 30b to transmit position information and music information in addition to or instead of the DJ device 10.

  As described above, in the second modification, the position information and the music information are transmitted directly from the DJ device 10 to the portable terminal 20 in addition to or instead of the DJ device 10 via the processing server 30b. Are transmitted to the portable terminal 20. Also in the position estimation system 1b of the second modified example, the mobile terminal 20b can preferably estimate whether the mobile terminal 20b is located at a location where the DJ device 10b is installed.

  In the description of the second modification described above, the processing server 30b receives position information and music information from the DJ device 10, stores the received position information and music information, and stores the stored position information and music information. Is transmitted to the portable terminal 20.

  However, the processing server 30b may have at least a part of the functions of the DJ device 10 in addition to or instead of these functions. For example, the processing server 30b may include the music acquisition unit 12 included in the DJ device 10. In this case, the DJ device 10 preferably transmits the music played back by the playback unit 11 to the processing server 30b, and may not include the music acquisition unit 12. Therefore, the processing load on the DJ device 10 is relatively reduced.

  Alternatively, the processing server 30b may have at least a part of the functions of the mobile terminal 20 in addition to or instead of these functions. For example, the processing server 30b may include at least a part of the music analysis unit 23, the comparison unit 24, and the position estimation unit 25 included in the mobile terminal 20. In this case, the mobile terminal 20 preferably transmits the sound collected by the sound collection unit 22 (or the analysis result of the music analysis unit 23 or the comparison result of the comparison unit 24) to the processing server 30b, and At least another part of the music analysis unit 23, the comparison unit 24, and the position estimation unit 25 may not be provided. Accordingly, the processing load on the mobile terminal 20 is relatively reduced.

  In the second modification, the operation using the operation information described in the first modification may be applied.

  The present invention is not limited to the above-described embodiments, and can be appropriately changed without departing from the gist or concept of the invention that can be read from the claims and the entire specification, and position estimation accompanying such a change. Apparatuses and methods, and computer programs are also included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1, 1a, 1b Distribution system 10 DJ apparatus 11 Transmission part 12 Music acquisition part 13 Position registration part 14 Communication part 15a Operation content analysis part 20 Portable terminal 21 Communication part 22 Sound collection part 23 Musical analysis part 24 Comparison part 25 Position estimation part 26a Analysis result correction unit 30b Processing server 31b Communication unit 32b Storage unit

Claims (7)

First acquisition means for acquiring voice information indicating the voice being collected by the terminal device;
Determination means for determining whether or not the characteristics of the audio information match a predetermined characteristic;
A position estimation apparatus comprising: estimation means for estimating the position of the terminal device based on a determination result of the determination means. The predetermined characteristic is a characteristic of a predetermined music,
The estimation means estimates that the terminal device is located at a specific point where the predetermined music is played when it is determined that the characteristics of the audio information match the characteristics of the predetermined music. The position estimation apparatus according to claim 1. The predetermined characteristic is a characteristic of a predetermined music being played by a playback device located at a specific point,
The estimation means estimates that the terminal device is located at the specific point where the playback device is located when it is determined that the characteristic of the audio information matches the characteristic of the predetermined music piece. The position estimation apparatus according to claim 1 or 2, wherein A second acquisition unit for acquiring characteristic information indicating the predetermined characteristic and position information indicating a specific point associated with the predetermined characteristic;
The determination means determines whether or not the characteristic of the voice information matches the predetermined characteristic indicated by the characteristic information;
The estimation means estimates that the terminal device is located at the specific point indicated by the position information when it is determined that the characteristic of the voice information matches the predetermined characteristic. Item 4. The position estimation device according to any one of Items 1 to 3. The position estimating device according to claim 4, wherein the second acquiring unit acquires the characteristic information and the position information from an external device connected to the position estimating device via a network. A first acquisition step of acquiring voice information indicating voice collected by the terminal device;
A determination step of determining whether or not the characteristic of the voice information matches a predetermined characteristic;
An estimation step of estimating a position of the terminal device based on a determination result of the determination step.   A computer program causing a computer to execute the position estimation method according to claim 6.

Images