JP5968414B2 - Calling suitability notification apparatus, method thereof, and program - Google Patents

Description

  The present invention relates to a calling suitability notification apparatus, a method thereof, and a program for determining whether or not a receiver is currently in a state where a call can be made based on a feature amount or the like.

  Conventionally, a technique for estimating a situation of a specific place (place) in a remote place using an acoustic signal has been studied. The conventional method generates a model for estimating the situation of the field using the situation determination model generation apparatus 900 shown in FIG. 26, and the situation of the field is detected by the situation estimation apparatus 950 shown in FIG. 27 using the model. This is an estimation method (for example, Non-Patent Document 1).

  The situation determination model generation apparatus 900 includes a feature amount extraction unit 901 and a situation determination modeling processing unit 902. The feature amount extraction unit 901 receives the sound signal of a specific sound such as a footstep, for example, and calculates its sound pressure level, sound power, MFCC feature amount, LPC feature amount, etc. every short time (20 msec to 100 msec). Feature quantity (vector) is extracted. The situation determination modeling processing unit 902 generates a situation determination model for the feature quantity (vector) extracted by the feature quantity extraction unit 901 using a modeling method such as GMM (Gaussian Mixture Model). The situation determination model is generated in correspondence with a plurality of specific sounds and is made into a database to constitute a specific situation model database 903.

  The situation estimation apparatus 950 includes a feature amount extraction unit 951, a specific situation model database 903, and a situation model comparison unit 952. The feature amount extraction unit 951 is the same as the feature amount extraction unit 901 of the situation determination model generation device 900, and extracts the feature amount of the acoustic signal of the input specific sound. The situation model comparison unit 952 compares the feature amount output by the feature amount extraction unit 951 with the specific determination model stored in the specific situation model database 903 using, for example, the Euclidean distance or the cosine distance, and the closest one Is regarded as a sound representing the situation of the place, and the estimation result of the situation of the place is output.

Antti J. Eronen, Vesa T. Peltonen, Juha T. Tuomi, Anssi P. Klapuri, Seppo Fagerlund, Timo Sorsa, Gaetan Lorho, and Jyri Huopaniemi, “Audio-Based Content Recognition”, IEEE TRANSACTIONS ON AUDIO, SPEECH, AND, LANGUAGE PROCESSING, VOL, 14, NO.1, JANUARY 2006.

  The situation estimation apparatus 950 using a conventional acoustic signal identifies a short-time acoustic signal of 20 msec to 100 msec, and estimates the situation of the field using the result. At that time, for example, the situation estimation is performed by corresponding one-to-one with the characteristic amounts of specific sounds such as footsteps and door opening / closing sounds. Therefore, there was a problem that only a simple situation such as a person entering the room could be estimated. For example, it has been difficult to estimate the situation of a place (eg, during cooking) characterized for the first time by a plurality of different sounds.

  The present invention has been made in view of such a problem, and determines whether or not the receiver is in a situation where the speaker is currently able to talk based on the feature amount or the like, and determines the determination result (calling suitability notification). It is an object of the present invention to provide a call suitability notification apparatus, a method thereof, and a program that make it possible to notify a transmitter of information).

  The call suitability notification device according to the present invention includes a feature amount extraction unit, an association unit, a call recommendation model storage unit, and a call recommendation status determination unit. The feature amount extraction unit divides a listener's acoustic signal sequence including a plurality of element sounds into short frames, and extracts feature amounts for each frame. The associating unit outputs associating information in which the feature amount is associated with the operation / behavior information or the operation / behavior classification information on the receiver side. The call recommendation model storage unit is a call that associates the action / behavior information specified from the association information or the action / behavior classification information that classifies the action / behavior information with the degree of ease of making a call. Save the recommended model. The call recommendation status determination unit receives associating information and refers to a call recommendation model in which the corresponding information is matched to determine whether a call frequently occurs on the receiver side or whether a call hardly occurs. The determined call suitability notification information is transmitted to the caller side.

  In addition, the call suitability notification device of the present invention includes a feature amount extraction unit, a call recommendation model storage unit, and a call recommendation status determination unit.

  The feature amount extraction unit divides an acoustic signal sequence including a plurality of element sounds into short frames, and extracts a feature amount for each frame. The call recommendation model storage unit stores a call recommendation model in which the feature amount and the degree of ease of occurrence of a call are associated with each other. The call recommendation status determination unit receives the feature amount, and refers to the call recommendation model that matches the feature amount to determine whether the call is frequently generated or not frequently generated on the receiver side. Call adequacy notification information is transmitted to the caller.

  In addition, the call suitability notification device of the present invention includes a feature amount extraction unit, a specific element sound model database, an element sound specification unit, a call recommendation model storage unit, and a call recommendation status determination unit.

  The feature amount extraction unit divides an acoustic signal sequence including a plurality of element sounds into short frames, and extracts a feature amount for each frame. The specific element sound model database stores an element sound specific model in which a feature amount and an element sound represented by the feature amount are associated with each other. The element sound specifying unit specifies the element sound having the most similar feature value by referring to the element sound specifying model stored in the specific element sound model database, using the feature amount as an input, and specifies the element sound specifying result Output information. The call recommendation model storage unit stores a call recommendation model in which element sound identification information is associated with the degree of ease of occurrence of a call. The call recommendation situation determination unit receives element sound identification information and refers to a call recommendation model in which the element sound identification information matches, or a situation in which a call frequently occurs on the receiver side or a situation in which a call does not occur much The call suitability notification information that determines whether or not is transmitted to the caller side.

  According to the call suitability notification device of the present invention, the receiver is currently in a state where the receiver can talk on the call according to any one of the feature amount, element sound, classification class, operation / behavior information, and operation / behavior classification information. It is possible to notify the transmitter side of the determination result (calling suitability notification information).

The figure which shows the function structural example of the specific condition model database creation apparatus 100 of this invention. The figure which shows the operation | movement flow of the specific condition model database creation apparatus 100. The figure which shows the relationship between a frame and a histogram frame. The figure which shows the example of an element sound histogram. The figure which shows the function structural example of the specific condition model database creation apparatus 200 of this invention. The figure which shows the operation | movement flow of the specific condition model database creation apparatus 200. The figure which shows the function structural example of the specific element sound model database creation apparatus 300. The figure which shows the function structural example of the specific element sound model database creation apparatus 400. The figure which shows the function structural example of the condition estimation apparatus 500. FIG. The figure which shows the operation | movement flow of the condition estimation apparatus 500. The figure which shows the function structural example of the communication system 2000 incorporating the call recommendation model production | generation apparatus 600 of this invention. The figure which shows the example of a communication log | history table. The figure which shows the function structural example of the communication system 2000 incorporating the call recommendation model production | generation apparatus 610 of this invention. The figure which shows the function structural example of the communication system 2000 incorporating the call recommendation model production | generation apparatus 620 of this invention. The figure which shows the function structural example of the call recommendation model production | generation apparatus 630 of this invention. The figure which shows the function structural example of the call recommendation model production | generation apparatus 640 of this invention. The figure which shows the function structural example of the call recommendation model production | generation apparatus 650 of this invention. The figure which shows the function structural example of the call recommendation model production | generation apparatus 660 of this invention. The figure which shows the function structural example of the communication system 2000 containing the call terminal 2010 to which the calling suitability notification apparatus 700 of this invention was connected. The figure which shows the function structural example of the communication system 2000 containing the call terminal 2010 to which the calling suitability notification apparatus 710 of this invention was connected. The figure which shows the function structural example of the communication system 2000 containing the call terminal 2010 to which the calling suitability notification apparatus 720 of this invention was connected. The figure which shows the function structural example of the calling suitability notification apparatus 730 of this invention. The figure which shows the function structural example of the calling suitability notification apparatus 740 of this invention. The figure which shows the function structural example of the calling suitability notification apparatus 750 of this invention. The figure which shows the function structural example of the calling suitability notification apparatus 760 of this invention. The figure which shows the function structural example of the conventional situation determination model production | generation apparatus 900. FIG. The figure which shows the function structural example of the conventional situation determination apparatus 950. FIG.

  Embodiments of the present invention will be described below with reference to the drawings. The same reference numerals are given to the same components in a plurality of drawings, and the description will not be repeated.

[Specific situation model database creation device]

  FIG. 1 shows a functional configuration example of the specific situation model database creation device 100 of the present invention. The operation flow is shown in FIG. The specific situation model database creation device 100 includes a feature amount extraction unit 10, a specific element sound model database 20, an element sound model comparison unit 30, an element sound histogram conversion unit 40, and a specific condition modeling unit 50. To do. The specific situation model database creation apparatus 100 is realized by a predetermined program being read into a computer constituted by, for example, a ROM, a RAM, and a CPU, and the CPU executing the program.

  The feature amount extraction unit 10 divides an acoustic signal sequence including a plurality of element sounds in a specific field into short-time frames, and extracts feature amounts for each frame (step S10). Here, the acoustic signal sequence including a plurality of element sounds in a specific place is an acoustic signal sequence representing the situation in a specific place such as a situation where a person is cooking or a person is reading. That is. That is, it is an acoustic signal whose time length recorded in a specific place is about 5 to 20 seconds, for example. The acoustic signal is divided into 20 msec to 100 msec frames, and for each frame, for example, sound pressure level, acoustic power, and MFCC feature amount. The feature amount of the element sound is extracted by calculating the feature amount of the LPC feature amount.

  The element sound model comparison unit 30 compares the feature amount output from the feature amount extraction unit 10 with a large number of specific element sound models stored in the specific element sound model database 20, and compares the distance (Euclidean distance or cosine distance). ), Or a labeled acoustic signal sequence obtained by assigning the label of the specific component sound model to the acoustic signal sequence in units of frames (step S30). The feature quantity with a label of the specific element sound model is created by the specific element sound model database creation apparatus 300 described later. Details will be described later.

  The element sound histogram generation unit 40 receives the label of the specific element sound model or the labeled acoustic signal sequence output from the element sound model comparison unit 30 as an input, and outputs the specific element sound model in the histogram frame in which a predetermined number of the frames are collected. An element sound histogram which is the appearance frequency for each label is created (step S40). FIG. 3 shows the relationship between the frame and the histogram frame. FIG. 3 is an example in which the specific place is set to, for example, “a situation where a person is cooking”. The labeled acoustic signal sequence is, for example, a signal sequence to which a specific element sound model label is assigned for each frame having a time width of 20 msec to 100 msec.

In the example of FIG. 3, the first frame f ₁ is a person's footsteps, the second frame f ₂ is a sound of cutting food with a kitchen knife, the third frame f ₃ is a person's footsteps, etc. The element sound model label is assigned. The histogram frame is a collection of P frames, and the P frames are, for example, 100 to 1000. From the first frame _{f 1} to _{f P} frame is first histogram frame _{H 1.} The second histogram frame H ₂ consists of frames f ₂ to f _{P + 1} frames. When the frame length of the labeled acoustic signal sequence is M, M−P + 1 histogram frames are created.

  The element sound histogram generator 40 creates an element sound histogram that is the appearance frequency for each label of the specific element sound model in the histogram frame. FIG. 4 illustrates an element sound histogram. The horizontal axis is the label of the specific element sound model, and the vertical axis is, for example, the number of times each specific element sound appears in one histogram frame and the likelihood of each specific element sound in each frame. This is the total sum for each specific element sound.

  The specific situation modeling unit 50 receives the element sound histogram output from the element sound histogram generation unit 40 as an input, and generates a specific situation model corresponding to a specific field using the modeling method for the element sound histogram ( Step S50). For example, when a GMM (Gaussian Mixture Model) is used, the generated modeling method uses a mixed normal distribution (Mixture of Gaussian as shown in, for example, Expression (1) using an EM (Expectation Maximization) algorithm or the like. ) To model the probability model p (x) fitted.

Here, x is a feature quantity (vector), k is the number of normal distributions, π _k is a mixing coefficient, N is a probability density function of normal distribution, μ _k is an average of distribution, and Σ _k is a distribution variance. For modeling the feature quantity, an HMM (Hidden Markov Model) that applies the feature quantity calculated to the probability distribution using the condition that the component at the next time is selected depending on the signal component observed in the past. Alternatively, an SVM (Support Vector Machine) that performs modeling by maximizing the margin between the clusters and determining the separation boundary with respect to the feature amount can be used. GMM, HMM, and SVM are well known (for example, references: Manabu Okumura, Daiya Takamura, “Introduction to Machine Learning for Language Processing” Corona).

  For example, when a specific situation model is generated using GMM, each of the M−P + 1 histogram frames created by the element sound histogram generator 40 has labels of N specific element sounds models.

  The specific situation model may be output as it is or may be stored in the specific situation model database 60.

  Under this assumption, the specific situation modeling unit 50 obtains an average and a variance from a plurality of histogram frames obtained from one or a plurality of long-time acoustic signals representing a specific situation such as cooking. At this time, if R types of specific situation models are calculated, R averages and variances are calculated, respectively, and the values become the specific situation models.

  As described above, according to the specific situation model database creation device 100 of the present invention, specific element sounds are identified from an acoustic signal sequence including a plurality of element sounds in a specific field, and the identification results are histogrammed. A specific situation model that identifies the place is generated from the distribution. Since this specific situation model is obtained from a plurality of specific element sounds, unlike a piecewise feature quantity of the prior art, the situation of a place (for example, during cooking) characterized for the first time by a plurality of different sounds is estimated. It becomes effective as a model.

  FIG. 5 shows a functional configuration example of the specific situation model database creation apparatus 200 of the present invention. The operation flow is shown in FIG. The specific situation model database creation device 200 records the sound signal in an unspecified place, that is, the input acoustic signal sequence may not be an acoustic signal representing a specific place with respect to the specific situation model database creation apparatus 100 described above. The distribution clustering processing unit 210 for classifying the element sound histogram created by the element sound histogram generating unit 40 according to the distribution shape, and the situation classification modeling unit 220 for generating a situation classification model from the output. And is different in that it comprises. Similarly to the specific situation model database creation apparatus 100, the specific situation model database creation apparatus 200 reads a predetermined program into a computer composed of, for example, a ROM, a RAM, and a CPU, and the CPU executes the program. It is realized.

  The specific situation model database creation apparatus 200 includes a feature quantity extraction unit 10, a specific element sound model database 20, an element sound model comparison unit 30, an element sound histogram conversion unit 40, a distribution clustering processing unit 210, and a situation classification model. And a conversion unit 220. The feature quantity extraction unit 10, the specific element sound model database 20, the element sound model comparison unit 30, and the element sound histogram generation unit 40 are the same as the specific situation model database creation device 100 as is clear from the reference numerals.

  The distribution clustering processing unit 210 receives a plurality of element sound histograms created by the element sound histogram generating unit 40, and classifies each element sound histogram according to its distribution shape (step S210). In other words, a group of B histograms is created by classifying M−P + 1 histograms with similar distribution shapes. B is a preset “number of element sounds to be classified”. As a method of classifying by the shape of the distribution, the same method as that for generating the specific situation model described above can be used. By using a classification method such as GMM or SVM, the M−P + 1 histograms are classified into groups (sets) of B histograms. Each group of histograms having similar distribution shapes corresponds to a specific field.

  The situation classification modeling unit 220 generates B types of situation classification models using modeling techniques such as GMM, HMM, and SVM for the B sets that are a group of histograms (step S220). The method for generating the situation classification model is the same as the method for generating the specific situation model described above.

[Specific Element Sound Model Database Creation Device]

  The specific element sound model database creation apparatus 300 that creates the specific element sound model database 20 constituting the specific situation model database creation apparatuses 100 and 200 will be described. FIG. 7 shows a functional configuration example of the specific element sound model database creation device 300. The specific element sound model database creation device 300 includes a feature amount extraction unit 310 and a specific element sound modeling unit 320.

  The feature amount extraction unit 310 receives an acoustic signal sequence of a specific sound, divides the acoustic signal sequence into short frames, and extracts a feature amount for each frame. As the feature amount, for example, a sound pressure level, an MFCC feature amount, an LPC feature amount, or the like is used. For example, in the case where there are a plurality of footstep acoustic signals of a specific sound, feature quantities (vectors) of all the acoustic signals are calculated. If there are n footstep sound signals and each sound signal can be divided into m short time periods, n × m feature values (vectors) are calculated.

  The specific element sound modeling unit 320 generates one specific element sound model by using a modeling method for n × m feature quantities (vectors). As the modeling method, the same method as the method for generating the specific situation model by the specific situation modeling unit 50 described above is used. The generated specific element sound model is stored in the specific element sound model database 20. The specific element sound model database 20 constitutes the specific situation model database creation apparatus 100 as described above. Next, another embodiment of the specific element sound model database creation apparatus 300 will be described.

  FIG. 8 shows a functional configuration example of the specific element sound model database creation device 400. The specific element sound model database creation apparatus 400 is different from the specific element sound model database creation apparatus 300 in that a feature amount clustering unit 410 and an element sound classification modeling unit 420 are provided, and a plurality of elements are included in the input acoustic signal sequence. It differs in that it includes sound.

  The feature quantity extraction unit 310 is the same as that of the specific element sound model database creation apparatus 300 except that the feature quantity extraction unit 310 is different only in that an acoustic signal sequence including a plurality of element sounds is input. The feature quantity clustering unit 410 classifies the feature quantities output by the feature quantity extraction unit 310 and creates a set of feature quantities. A method such as GMM or SVM is used as a feature amount classification method, and the acoustic signal sequence is classified into C groups (groups). C is a preset “number of feature quantities to be classified”.

  The element sound classification modeling unit 420 receives a set of C feature amounts output from the feature amount clustering unit 410 and generates a component sound classification model using a modeling method for the set. As the modeling method, the same method as the method for generating the specific situation model from the element sound histogram by the specific situation modeling unit 50 described above is used.

  The specific element sound model database creation device 400 classifies an acoustic signal sequence including a plurality of element sounds based on the feature amount, and generates an element sound classification model from the classified group (set).

[Situation estimation device]

  FIG. 9 shows a functional configuration example of the situation estimation apparatus 500 of the present invention. The operation flow is shown in FIG. The situation estimation apparatus 500 is generated by the specific element sound model database 20 that stores the specific element sound model generated by the specific element sound model database creation apparatus 300 described above, and by the specific situation model database creation apparatuses 100 and 200 described above. The specific situation model database 60 storing the specific situation model and the situation classification model is used to estimate the situation represented by the acoustic signal sequence. The situation estimation apparatus 500 is realized by a predetermined program being read into a computer including, for example, a ROM, a RAM, and a CPU, and the CPU executing the program.

  The situation estimation apparatus 500 includes a feature quantity extraction unit 10, a specific element sound model database 20, an element sound model comparison unit 30, an element sound histogram generation unit 40, a situation determination model comparison unit 510, and a specific situation model database 60. And. The feature amount extraction unit 10 divides the input acoustic signal sequence into short-time frames, and extracts feature amounts for each frame (step S10). The element sound model comparison unit 30 compares the feature amount output from the feature amount extraction unit 10 with the specific element sound model or the element sound classification model stored in the specific element sound model database 20, and determines the closest one for each. The element sound is determined as an element sound of the short-time sound signal, and an element sound label is assigned to the sound signal string for each frame (step S30). The element sound histogram generation unit 40 receives the label of the specific element sound model or the labeled acoustic signal sequence output from the element sound model comparison unit 30 as an input, and outputs the specific element sound model in the histogram frame in which a predetermined number of the frames are collected. An element sound histogram which is the appearance frequency for each label is created (step S40). The operation so far is the same as that of the specific situation model database creation apparatus 100 or 200 described above.

  The situation determination model comparison unit 510 compares the element sound histogram and the specific situation model or the situation classification model stored in the specific situation model database 60, estimates the closest one as the situation represented by the specific situation model, and estimates the estimation. Output the result. Here, the comparison is performed using a plurality of specific situation models and the Euclidean distance and cosine distance of the element sound histogram.

  For the estimation of the situation of the field, for example, the model having the closest distance is estimated as the situation of the scene. If the distance is closer than the predetermined threshold, the model with the closest distance is estimated as the current situation, and if there is no model with the distance closer than the threshold, it may be estimated as “other situations”. It is done.

  According to the situation estimation apparatus 500 described above, it is possible to estimate the situation of a field characterized for the first time by a plurality of different sounds using an acoustic signal. In addition, by introducing a clustering process into the generation of the element sound determination model, it is possible to estimate the situation of the field without preparing an acoustic signal labeled with a specific sound and a specific situation in advance.

  The specific element sound model database creation device 300 that creates the specific element sound model database 20 constituting the situation estimation device 500 uses a modeling method for the feature amount (vector) of an acoustic signal of a specific sound. A sound model is generated. In the following, some devices when the technical idea is applied to a communication scene will be described. First, a call recommendation model generation apparatus 600 that generates a call recommendation model used for the purpose of knowing whether a communication partner in a remote place can communicate is described.

[Call recommendation model generator]

  The call recommendation model generation apparatus 600 is used in a communication system, and performs modeling of an acoustic signal when a telephone call frequently occurs and modeling of an acoustic signal when a telephone conversation does not occur so much. FIG. 11 shows a functional configuration example of the call recommendation model generation device 600 and a functional configuration example of a communication system 2000 in which the call recommendation model generation device 600 is connected to one communication terminal.

  The communication system 2000 includes a network 2020 such as a telephone line network or the Internet, and communication terminals 2010 and 2030 arranged on one side and the other side of the network 2020. The communication terminal 2010 is, for example, a receiving side, and the communication terminal 2020 is, for example, a transmitting side. The communication terminal 2010 is connected with a call recommendation model generation device 600. The communication terminal 2010 includes an audio / video signal presentation unit 2011 and an audio / video signal acquisition unit 2012. The notation of the audio / video signal presentation unit and the acquisition unit on the communication terminal 2030 side is omitted.

  The call recommendation model generation apparatus 600 includes a feature amount extraction unit 601, a call history extraction unit 602, a call recommendation model generation unit 603, and a call recommendation model storage unit 604. The feature quantity extraction unit 601 divides the acoustic signal sequence acquired from the audio / video signal acquisition unit 2012 of one communication terminal 2010 into short frames, and extracts the feature quantity for each frame. As the feature amount, for example, any one of sound pressure level, sound power, zero cross feature amount, MFCC feature amount, LPC feature amount, and the like is used. The extracted feature amount is output to the call recommendation model generation unit 603.

The call history extraction unit 602 receives the call history from the communication terminal 2010 at any time and transmits an incoming / outgoing call signal indicating that there is a new call / incoming call to the call recommendation model generation unit 603 and also stores the call history table. create. FIG. 12 shows an example of a call history table. The call history table includes, for example, items of outgoing / incoming time, call end time, call time, outgoing / incoming call, destination number, and historical address. The null of the call end time of the history address 0002 in FIG. 12 indicates that “a call that has been received from the other communication terminal 2030 but one of the callers did not off-hook the receiver”. Further, null of the history address 0004 indicates that “the call originated from one communication terminal 2010 but the other party did not go off-hook”.

  In response to the incoming / outgoing call signal output from the call history extraction part 602, the outgoing call recommendation model generation unit 603 identifies the feature quantity classification of the feature quantity of the acoustic signal immediately before the incoming / outgoing call signal. The identification is performed within a range of the magnitude of the distance using, for example, a Euclidean distance or a cosine distance. Then, the call recommendation model generation unit 603 creates a call history model table. Table 1 shows an example of a call history model table.

図１２に示した履歴アドレス０００３と０００５が例えば特徴量分類ａに、履歴アドレス０００１と０００６が特徴量分類ｄに分類されている。

The history addresses 0003 and 0005 shown in FIG. 12 are classified into, for example, the feature amount classification a, and the history addresses 0001 and 0006 are classified into the feature amount classification d.

  The call recommendation model generation unit 603 classifies the feature amount of the acoustic signal immediately before the incoming / outgoing call signal, and then grades the feature amount classification from the call history table corresponding to the history address. The leveling is performed so that when the number of calls often occurs, the value of the degree of ease of making the call becomes large, and when the number of calls does not occur so much, the value of the degree of ease of making the call becomes small. . For example, the following leveling is performed.

  The side that made the call at the time when the call was made considers that the call often occurs, and adds 1 to the degree T of the ease of the call. If there is an incoming call but does not go off-hook, it is considered that the call does not occur so much, and 1 is subtracted from the degree T of the ease of the call. When a call occurs, a value of 0.0 to 2.0 is added to T according to the call time. Further, even when a call occurs, if the call time is within a predetermined time (for example, 60 seconds), it is considered that the call does not occur so much, and 0.5 is subtracted from T. Thus, by adjusting the value of the degree T of the likelihood of a call, the feature amount classification can be divided into those that are likely to cause a call and those that are unlikely to cause a call. For example, if the value of T is 10 or more, it can be determined that calls often occur, and if it is -10 or less, it is determined that calls do not occur much. Then, the feature quantity classification thus generated and the occurrence degree T are associated with each other to obtain a call recommendation model. The call recommendation model is stored in the call recommendation model storage unit 604. That is, the call recommendation model is a table in which the feature amount (vector) and the occurrence degree T are associated with each other. Therefore, by evaluating the feature quantity of the acoustic signal on the receiving side using the call recommendation model, it is possible to know whether or not the call on the receiving side is likely to occur.

  Note that in order to generate the call recommendation model, only the audio signal may be used as described above, or the video signal acquired by the audio / video signal acquisition unit 2012 may be used. Further, the call recommendation model may be generated using, for example, illuminance information, temperature information, acceleration information, or the like acquired by other sensors (605 indicated by a broken line in FIG. 11). Further, as the call recommendation model, only one of a model in which calls frequently occur and a model in which calls are not frequently generated may be generated.

  FIG. 13 shows a functional configuration example of the call recommendation model generation device 610 of the present invention. The call terminal 2010 to which the call recommendation model generation device 610 is connected constitutes a communication system 2000. For example, the call recommendation model generation device 610 prepares a model in which specific element sounds such as footsteps, sound of glass breaking, and the like are associated with feature amounts in advance, and the call recommendation model generation device 600 described above. A specific element sound is specified from the feature amount extracted by the feature amount extraction unit 601 and a call recommendation model is generated using the specific element sound.

  The call recommendation model generation device 610 differs from the call recommendation model generation device 600 in that it further includes a specific element sound model database 611 and an element sound specification unit 612. In the specific element sound model database 611, the element sound in which the feature amount (vector) obtained by the feature amount extraction unit 601 is associated with the element sound represented by the feature amount (for example, footsteps, sound that breaks the glass, and voice). A specific model is stored. The method for creating the specific element sound model database 611 is the same as that in the third embodiment.

  The element sound specifying unit 612 receives the feature amount extracted by the feature amount extraction unit 601 and compares it with each specific element sound model stored in the specific element sound model database 611 to compare the distance (Euclidean distance or cosine). The one having the closest distance) is identified as the element sound of the frame, and the identification result is output to the call recommendation model generation unit 603.

  The outgoing call recommendation model generation unit 603 classifies the history addresses by the element sounds immediately before the incoming / outgoing call signal, and grades the element sounds from the call history table corresponding to the history addresses. The leveling for element sounds is the same as the method described above.

  The call recommendation model generation unit 603 associates the identification result output from the element sound identification unit 612 with the history address of the call history table, and makes a call recommendation model when a call often occurs and when a call hardly occurs Is generated. The call recommendation model in which the element sound of the specific result is associated with the occurrence degree T is stored in the call recommendation model storage unit 613. Modeling is done in the same way as described above.

  According to the call recommendation model generation device 610, it is possible to generate a call recommendation model in which element sounds of individual specific results are associated with the degree of occurrence T. An example is shown in Table 2.

表２は、例えば受話側で人の声がしている時は通話が発生し易く、ドアの開閉音が発生した時は通話が発生し難いことを示している。

Table 2 shows that, for example, a call is likely to occur when a voice is heard on the receiving side, and a call is unlikely to occur when a door opening / closing sound is generated.

  FIG. 14 shows a functional configuration example of the call recommendation model generation device 620 of the present invention. The call recommendation model generation device 620 clusters feature amounts for a certain period of time, determines a class to which the feature amount extracted by the feature amount extraction unit 601 belongs from a model generated for each cluster, and determines the class of element sound thus determined Is used to generate a call recommendation model.

  The call recommendation model generation device 620 includes a specific element sound model database 621 and an element sound cluster determination unit 622 instead of the specific element sound model database 611 and the element sound determination unit 612 of the call recommendation model generation device 610. Different. In the call recommendation model generation device 610, in order to generate a model corresponding to an element sound, for example, it is necessary to prepare in advance a feature amount corresponding to a sound such as a footstep or a sound of breaking glass. However, it is difficult to prepare in advance feature amounts corresponding to all the element sounds that can be generated.

  Therefore, the call recommendation model generation device 620 generates a model without preparing an association between element sounds and feature amounts in advance. In the specific element sound model database 621, element sound classification models created by classifying feature quantities (vectors) for a certain period of time that would be obtained by the feature quantity extraction unit 601 using a technique such as GMM, HMM, or SVM. Is saved. The method for creating the specific element sound model database 621 is the same as that in the fourth embodiment.

  The element sound cluster determination unit 622 compares the feature amount (vector) acquired from the feature amount extraction unit 601 with the element sound classification model stored in the specific element sound model database 621 to determine the classification class to which the feature amount belongs. The classification result is output to the call recommendation model generation unit 624.

  The call recommendation model generation unit 624 associates the classification class output by the element sound cluster determination unit 622 with the history address of the call history table, and recommends calls when the call often occurs and when the call does not occur much. Generate a model. Modeling is done in the same way as described above.

  According to the call recommendation model generation device 620, it is possible to generate a call recommendation model in which a classification class of element sounds and an occurrence degree T are associated with each other.

  The call recommendation model may be a model in which the degree T of occurrence of a call is associated with other information. For example, instead of the above-described feature quantity itself, the call / action information that can be estimated from the feature quantity, the action / behavior classification information that classifies the action / behavior information, and the call occurrence degree T are associated with each other. It may be a recommended model.

FIG. 15 shows an example of a functional configuration of a call recommendation model generation device 630 that generates a call recommendation model in which operation / behavior information is associated with a call occurrence degree T. The call recommendation model generating device 630 is obtained by adding an operation / behavior specifying model storage unit 631 and an operation / behavior specifying unit 632 to the configuration of the call recommendation model generating device 610 described above.

  The call recommendation model generation device 630 prepares a model in which element sounds such as element sounds, footsteps, and glass breaking sounds specified by the element sound specifying unit 612 are associated with actions and actions that generate element sounds. Thus, the action or action that generates the element sound is specified, and a call recommendation model is generated using the specified action or action.

  The action / behavior specifying model storage unit 631 is an action / action in which a specific result output by the element sound specifying unit 612 and an action / behavior (for example, cooking, reading, sleeping) are associated with each other. An action specific model is stored. The method for creating the action / behavior specific model storage unit 631 is the same as the method for creating the specific situation model database of the first embodiment. For example, the action / behavior specifying model receives, as an input, the output of the element sound specifying unit 612 for each frame having a time width of 20 msec to 100 msec, for each histogram frame in which P frames are collected, for each label of the specific element sound model. An element sound histogram representing the appearance frequency is created, and the shape of the histogram is modeled using a modeling technique.

  The action / behavior identification unit 632 creates a histogram of the identification results output from the element sound identification unit 612, compares it with the action / behavior identification model stored in the action / behavior identification model storage unit 631, and most similar operation / behavior. The action / behavior is specified by specifying the classification model, and the action / behavior information is output to the call recommendation model generation unit 603.

  The call recommendation model generation unit 634 associates the operation / behavior information output by the operation / behavior identification unit 632 with the history address of the call history table, and generates a call when a call frequently occurs and when a call hardly occurs. Create a call recommendation model. Modeling is performed in the same manner as described above, and is stored in the call recommendation model storage unit 633.

  The call recommendation model generation device 630 can generate a call recommendation model in which the action / behavior information and the occurrence degree T are associated with each other. The action / behavior information is, for example, information such as “cooking” or “reading”, and is a call recommendation model in which the value of the degree of occurrence T is associated with each.

  Further, a functional configuration example of the call recommendation model generation device 640 having a configuration in which an operation / behavior specification model storage unit 631 and an operation / behavior specification unit 632 are further added to the configuration of the call recommendation model generation device 620 described above is also considered. It is done. FIG. 16 shows a functional configuration example of the call recommendation model generation device 640.

  The call recommendation model generation device 640 prepares a model in which the element sound class specified by the element sound cluster determination unit 622 is associated with the action or action that generates the element sound, thereby generating the element sound. And an action are specified, and a call recommendation model is generated using the specified action and action.

  The call recommendation model generation unit 634 associates the operation / behavior information output by the operation / behavior identification unit 632 with the history address of the call history table, and generates a call when a call frequently occurs and when a call hardly occurs. Create a call recommendation model. Modeling is done in the same way as described above. The call recommendation model generation device 640 can also generate a call recommendation model in which the action / behavior information and the occurrence degree T are associated with each other.

  FIG. 17 shows a functional configuration example of the call recommendation model generation device 650 of the present invention in which an operation / behavior classification model storage unit 651 and an operation / behavior cluster determination unit 652 are further added to the configuration of the call recommendation model generation device 610 described above. Indicates.

  The call recommendation model generation device 650 determines the action or action class represented by the element sound specified by the element sound specifying unit 612, and generates a call recommendation model using the determined action or action class. .

  In the action / behavior classification model storage unit 651, the element sound histogram generated by the histogram processing from the element sound identification results over a plurality of frames acquired from the element sound specifying unit 612, and the action / behavior (for example, cooking) , Reading, sleeping, etc.) are stored. The creation method of the action / behavior identification model storage unit 651 is the same as the creation method of the specific situation model database of the second embodiment. For example, an output of the element sound specifying unit 612 for each frame having a time width of 20 msec to 100 msec is input, and an element sound histogram which is an appearance frequency for each label of the specific element sound model for each histogram frame in which P frames are collected. Create By classifying the histograms that are similar in shape into a set (group) of B histograms, and using these B sets using a modeling method such as GMM, HMM, or SVM, Generate an action / behavior specific model.

  The action / behavior cluster determination unit 652 calculates a frequency feature amount from the element sound identification result acquired from the element sound identification unit 612, and compares it with the action / behavior classification model stored in the action / behavior classification model storage unit 651. Then, the most similar operation / behavior classification model is identified as the operation / behavior classification represented by the identification result, and the operation / behavior classification information is output to the call recommendation model generation unit 603.

  The call recommendation model generation unit 654 associates the action / behavior classification information output from the action / behavior identification unit 652 with the history address of the call history table, and the case where the call often occurs and the case where the call does not occur much A call recommendation model is generated. The call recommendation model in which the action / behavior classification information and the occurrence degree T are associated with each other is stored in the call recommendation model storage unit 653.

  The call recommendation model generation device 650 can generate a call recommendation model in which the action / behavior classification information and the occurrence degree T are associated with each other.

  Also, a functional configuration example of the call recommendation model generation device 660 in which an operation / behavior classification model storage unit 651 and an operation / behavior cluster determination unit 652 are further added to the configuration of the call recommendation model generation device 620 described above is also conceivable. FIG. 18 shows a functional configuration example of the call recommendation model generation device 660.

  The call recommendation model generation device 660 determines an action or action class represented by the element sound class determined by the element sound cluster determination unit 622, and generates a call recommendation model using the determined action or action class. Is.

  The call recommendation model generation unit 654 associates the action / behavior classification information output by the action / behavior cluster determination unit 652 with the history address of the call history table, and the case where the call often occurs and the case where the call hardly occurs Generate a call recommendation model. Modeling is done in the same way as described above. The call recommendation model generation device 660 can also generate a call recommendation model in which the action / behavior classification information and the occurrence degree T are associated with each other.

  In addition, although the example using only an audio signal was demonstrated for generation | occurrence | production of the call recommendation model of the call recommendation model generation apparatus described in Examples 7-10, the video signal acquired by the audio / video signal acquisition unit 2012 has been described. For example, the call recommendation model may be generated using illuminance information, temperature information, acceleration information, and the like acquired by other sensors. The same. Similarly, as the call recommendation model, only one of a model in which calls are frequently generated and a model in which calls are not frequently generated may be generated.

  As described above, the call recommendation model generation apparatus that generates the call recommendation model used for the purpose of knowing whether or not the communication partner in the remote place can communicate is described. Next, using the call recommendation model generation devices 600 to 660, a call suitability notification device that solves the problem of calling a receiver even though a remote communication partner is not in a call-capable state Will be described.

[Calling suitability notification device]

  FIG. 19 shows an example of a functional configuration of a communication system 2000 including a call suitability notification device 700. The functional configuration of the communication system 2000 is the same as that described above. The call adequacy notification device 700 is connected to the communication terminal 2010 on the receiving side, and is currently in a state where the callee can talk using the call recommendation model generated by the call recommendation model generation device 600 (Example 6). Whether or not.

  The call suitability notification device 700 includes a feature amount extraction unit 601, a call recommendation model storage unit 604, and a call recommendation status determination unit 701. The feature quantity extraction unit 601 and the call recommendation model storage unit 604 are the same as the call recommendation model generation device 600.

  The call recommendation situation determination unit 701 includes, for example, feature amounts such as a sound pressure level, an acoustic power, a zero cross feature amount, an MFCC feature amount, and an LPC feature amount extracted from the acoustic signal sequence output by the feature amount extraction unit 601. A call suitability notification for notifying the sending side of the suitability of the call by comparing the call recommendation model in which the feature amount (vector) stored in the call recommendation model storage unit 604 is associated with the occurrence degree T. Output information. Appropriateness of the call is determined by comparing the value T of the above-mentioned call occurrence T with a certain threshold value. For example, if the value of T is 10 or more, the call is suitable, and the value of T is -10 or less. If it is not suitable for outgoing calls.

  The call suitability notification information is input to the call terminal 2010 and transmitted to the call terminal 2030 on the transmitting side via the network 2020. The communication terminal 2030 on the transmission side that has received the call suitability notification information displays whether or not the receiver is in a state where a call is possible. The display is performed by calling recommendation information display means (not shown) such as lighting of an LED lamp or the like, or display of a liquid crystal panel.

  The output interval of the call suitability notification information related to the design matter is assumed to be performed at intervals of several seconds to several minutes, for example. The functions of the call suitability notification device 700 and the call recommendation information display unit may be configured integrally with the call terminals (2010, 2030). In addition, the method for identifying the communication terminal on the side of the caller notifying the call suitability notification information is not the main part of the present invention, so the description thereof will be omitted, but the call terminals of a plurality of callers are registered in advance. This can easily be realized.

  FIG. 20 shows a functional configuration example of the communication system 2000 including the calling suitability notification device 710. The call suitability notification device 710 is connected to the communication terminal 2010 on the receiving side, and is currently in a situation where the receiver side can talk using the call recommendation model generated by the call recommendation model generation device 610 (Example 7). Whether or not.

  The call suitability notification device 710 includes a feature amount extraction unit 601, a specific element sound model storage unit 611, an element sound specification unit 612, a call recommendation model storage unit 613, and a call recommendation situation determination unit 711. It has. The feature amount extraction unit 601, the specific element sound model storage unit 611, the element sound specification unit 612, and the call recommendation model storage unit 613 are the same as the call recommendation model generation device 610.

  The call recommendation status determination unit 711 generates an element sound output from the element sound identification unit 612 and a call recommendation model in which a voice such as a footstep or a glass breaking sound is associated with an occurrence degree T of a call. The call suitability notification information for notifying the sending side of the suitability of the call by collating is output. The subsequent operation is the same as that of the call suitability notification device 700.

  FIG. 21 shows a functional configuration example of the communication system 2000 including the calling suitability notification device 720. The call adequacy notification device 720 is connected to the communication terminal 2010 on the receiving side, and is in a state where the caller can currently make a call using the call recommendation model generated by the call recommendation model generation device 620 (Example 8). Whether or not.

  The call suitability notification device 720 includes a feature quantity extraction unit 601, a specific element sound model database 621, an element sound cluster determination unit 622, a call recommendation model storage unit 623, and a call recommendation status determination unit 721. It has. The feature amount extraction unit 601, the specific element sound model database 621, the element sound cluster determination unit 622, and the call recommendation model storage unit 623 are the same as the call recommendation model generation device 620.

  The call recommendation status determination unit 721 checks the suitability of the call by comparing the classification class output from the element sound cluster determination unit 622 with the call recommendation model in which the classification class is associated with the call generation degree T. The call suitability notification information to be notified to the transmitting side is output. The subsequent operation is the same as that of the call suitability notification device 700.

  The call suitability notification device can also be configured using a call recommendation model in which the degree T of occurrence of a call is associated with other information. For example, instead of the above-described feature quantity itself, the call / action information that can be estimated from the feature quantity, the action / behavior classification information that classifies the action / behavior information, and the call occurrence degree T are associated with each other. It may be a recommended model.

  FIG. 22 shows a functional configuration example of the call suitability notification device 730 in that case. The call suitability notification device 730 includes a feature amount extraction unit 601, an association unit 732, a call recommendation model storage unit 633, and a call recommendation status determination unit 731. The feature amount extraction unit 601 divides the acoustic signal sequence on the receiver side including a plurality of element sounds into short-time frames, and extracts feature amounts for each frame. The associating unit 732 outputs associating information in which the feature amount is associated with the behavior / behavior information on the listener side. The call recommendation model storage unit 633 stores a call recommendation model in which the action / behavior information specified from the feature amount is associated with the degree of ease of occurrence of a call. The call recommendation situation determination unit 731 receives the association information as input, refers to the call recommendation model that matches with the action / behavior information, or is a situation in which a call frequently occurs on the receiver side or a situation in which a call hardly occurs? Is transmitted to the caller side.

  The call suitability notification device 730 notifies whether or not the receiver side is currently in a call-capable state using the call recommendation model generated by the call recommendation model generation device 630 (Example 9).

  The call suitability notification device 730 includes a feature amount extraction unit 601, an association unit 732, a call recommendation model storage unit 633, and a call recommendation status determination unit 731. The associating unit 732 includes a specific element sound model database 611, an element sound specifying unit 612, an action / behavior specifying model storage unit 631, and an action / behavior specifying unit 632. This configuration is the same as that of the call recommendation model generation device 630.

  The call recommendation status determination unit 731 receives associating information in which the feature amount output from the associating unit 732 is associated with the operation / behavior information on the receiver side, and receives a call recommendation model that matches the operation / behavior information. Referring to FIG. 5, the call adequacy notification information for determining whether the call is frequently generated on the receiver side or whether the call is not often generated is transmitted to the caller side.

  FIG. 23 shows a functional configuration example of the call suitability notification device 740. The call suitability notification device 740 notifies whether or not the receiver side is currently in a call-capable state using the call recommendation model generated by the call recommendation model generation device 640 (Example 9).

  The call suitability notification device 740 includes a feature amount extraction unit 601, an association unit 742, a call recommendation model storage unit 633, and a call recommendation status determination unit 741. The associating unit 742 includes a specific element sound model database 621, an element sound cluster determining unit 622, an action / behavior specifying model storage unit 631, and an action / behavior specifying unit 632. This configuration is the same as that of the call recommendation model generation device 630.

  The call recommendation situation determination unit 741 receives associating information that associates the feature amount output by the associating unit 742 with the action / behavior information, and refers to the call recommendation model that matches the action / behavior information. Call adequacy notification information is transmitted to the caller's side, which determines whether the call is frequently occurring on the receiver side or is not likely to occur.

  FIG. 24 shows a functional configuration example of the call suitability notification device 750. The call suitability notification device 750 notifies whether or not the receiver side is currently in a callable state using the call recommendation model generated by the call recommendation model generation device 650 (Example 10).

  The call suitability notification device 750 includes a feature amount extraction unit 601, an association unit 752, a call recommendation model storage unit 653, and a call recommendation status determination unit 751. The associating unit 752 includes a specific element sound model database 611, an element sound specifying unit 612, an action / behavior classification model storage unit 651, and an action / behavior cluster specifying unit 652. This configuration is the same as that of the call recommendation model generation device 650.

  The call recommendation status determination unit 751 receives the feature amount output from the association unit 752 and the action / behavior classification information as input, and refers to the call recommendation model that matches the action / behavior classification information, so that the call on the receiver side is good. Call adequacy notification information that determines whether the situation occurs or the situation in which a call does not occur so much is transmitted to the caller side.

  FIG. 25 shows a functional configuration example of the call suitability notification device 760. The call adequacy notification device 760 uses the call recommendation model generated by the call recommendation model generation device 660 (Embodiment 10) to notify whether or not the receiver side is currently in a callable state.

  The call suitability notification device 760 includes a feature amount extraction unit 601, an association unit 762, a call recommendation model storage unit 653, and a call recommendation status determination unit 761. The association unit 762 includes a specific element sound model database 621, an element sound cluster determination unit 622, an action / behavior classification model storage unit 651, and an action / behavior cluster determination unit 652. This configuration is the same as that of the call recommendation model generation device 660.

  The call recommendation state determination unit 761 refers to the call recommendation model that matches the action / behavior classification information by using the association information that associates the feature amount output by the association unit 762 with the action / behavior classification information as an input. Thus, call adequacy notification information is transmitted to the caller side for determining whether the call is frequently generated on the receiver side or whether the call hardly occurs.

  As described above, according to the calling suitability notification devices 700 to 760 of the present invention, the listener can use the feature amount, element sound, classification class, operation / behavior information, or operation / behavior classification information on the receiver side. It is possible to determine whether or not the telephone is currently in a callable state and notify the determination result (calling suitability notification information) to the transmitter side.

  The processes described in the above apparatuses and methods are not only executed in time series according to the order of description, but may also be executed in parallel or individually as required by the processing capability of the apparatus that executes the processes. .

  Further, when the processing means in the above apparatus is realized by a computer, the processing contents of functions that each apparatus should have are described by a program. Then, by executing this program on the computer, the processing means in each apparatus is realized on the computer.

The program describing the processing contents can be recorded on a computer-readable recording medium. As the computer-readable recording medium, for example, any recording medium such as a magnetic recording device, an optical disk, a magneto-optical recording medium, and a semiconductor memory may be used. Specifically, for example, as a magnetic recording device, a hard disk device, a flexible disk, a magnetic tape or the like, and as an optical disk, a DVD (Digital Versatile Disc), a DVD-RAM (Random Access Memory), a CD-ROM (Compact Disc Read Only). Memory), CD-
R (Recordable) / RW (ReWritable) or the like can be used as a magneto-optical recording medium, MO (Magneto Optical disc) or the like as a semiconductor memory, EEP-ROM (Electronically Erasable and Programmable-Read Only Memory) or the like as a semiconductor memory.

  The program is distributed by selling, transferring, or lending a portable recording medium such as a DVD or CD-ROM in which the program is recorded. Further, the program may be distributed by storing the program in a recording device of a server computer and transferring the program from the server computer to another computer via a network.

  Each means may be configured by executing a predetermined program on a computer, or at least a part of these processing contents may be realized by hardware.

Claims (7)

A feature quantity extraction unit that divides a listener's acoustic signal sequence including a plurality of element sounds into short-time frames and extracts a feature quantity for each frame;
An associating unit that outputs associating information that associates the feature amount with the action / behavior information or action / behavior classification information on the receiver side;
A call that stores a call recommendation model that associates the action / behavior information identified from the association information or the action / behavior classification information that classifies the action / behavior information with the degree of ease of making a call. A recommended model storage unit;
And inputs the correspondence information, the calling propriety notification information by referring to the call recommendation model the correspondence information match determines whether there in passing story possible situations in the listener, call A call suitability notification device comprising: a call recommendation status determination unit that transmits to a user side. A feature quantity extraction unit that divides an acoustic signal sequence including a plurality of element sounds into short-time frames and extracts a feature quantity for each frame;
A call recommendation model storage unit that stores a call recommendation model that associates the feature amount with the degree of ease of occurrence of a call;
And inputs the feature quantity, the outgoing call propriety notification information by referring to the call recommendation model in which the feature amount matches determines whether there in passing story possible situations in listener, the caller side A call suitability notification device comprising: a call recommendation status determination unit for transmission. A feature quantity extraction unit that divides an acoustic signal sequence including a plurality of element sounds into short-time frames and extracts a feature quantity for each frame;
A specific element sound model database in which an element sound specific model in which the feature amount and the element sound represented by the feature amount are associated with each other is stored;
Using the feature amount as an input, the element sound specifying model stored in the specific element sound model database is referred to specify the element sound having the most similar feature amount, and the element sound specifying information as the determination result is output. Element sound identification part;
A call recommendation model storage unit that stores a call recommendation model that associates the element sound identification information with the degree of ease of occurrence of a call;
And inputs the element tone identification information, the call propriety notification information by referring to the call recommendation model corresponding element tone specific information match determines whether there in passing story possible situations in listener, A call suitability notification device comprising: a call recommendation status determination unit that transmits to a caller side. A call suitability notification method executed by a call suitability notification device,
A feature amount extraction step of dividing a sound signal sequence on the receiver side including a plurality of element sounds into short-time frames and extracting a feature amount for each frame;
An associating step for outputting associating information associating the feature amount with the action / behavior information or action / behavior classification information on the receiver side;
A call that stores a call recommendation model that associates the action / behavior information identified from the association information or the action / behavior classification information that classifies the action / behavior information with the degree of ease of making a call. A recommended model storage step;
And inputs the correspondence information, the calling propriety notification information by referring to the call recommendation model the correspondence information match determines whether there in passing story possible situations in the listener, call A call suitability notification method comprising: a call recommendation status determination step to be transmitted to a party. A call suitability notification method executed by a call suitability notification device,
A feature amount extraction step of dividing an acoustic signal sequence including a plurality of element sounds into short-time frames and extracting a feature amount for each frame; and
A call recommendation model storage step for storing a call recommendation model in which the feature amount and the degree of ease of occurrence of a call are associated;
And inputs the feature quantity, the outgoing call propriety notification information by referring to the call recommendation model in which the feature amount matches determines whether there in passing story possible situations in listener, the caller side A call suitability notification method comprising: a call recommendation status determination step for transmission. A call suitability notification method executed by a call suitability notification device,
A feature amount extraction step of dividing an acoustic signal sequence including a plurality of element sounds into short-time frames and extracting a feature amount for each frame; and
With reference to the element sound specifying model stored in the specific element sound model database in which the element sound specifying model in which the feature amount and the element sound represented by the feature amount are associated with each other is input using the feature amount An element sound specifying step for specifying an element sound having the most similar feature amount and outputting element sound specifying information as a result of the determination;
A call recommendation model storage step for storing a call recommendation model in which the element sound identification information and the degree of ease of occurrence of a call are associated;
And inputs the element tone identification information, the call propriety notification information by referring to the call recommendation model corresponding element tone specific information match determines whether there in passing story possible situations in listener, A call suitability notification method comprising: a call recommendation status determination step transmitted to a caller side.   A program for causing a computer to function as the call suitability notification device according to any one of claims 1 to 3.

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