JP2013236195A - Broadcast material confirmation system and broadcast material confirmation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately detect whether or not audio material to be broadcasted is actually broadcasted.SOLUTION: A broadcast material confirmation system 1 includes: a registration processing section 10 which adds a tone to inputted material data for each first timing, performs predetermined frequency analysis with respect to the tone-added first material data, stores a first integrated value obtained by integrating a resulted analysis value at each first timing interval, and outputs the first material data to a broadcast station 40; a reception processing section 20 which receives tone-added second material data broadcasted from the broadcast station 40, detects the tone from the second material data, performs the predetermined frequency analysis with respect to the second material data, stores a second integrated value obtained by integrating the resulted analysis value at the second timing interval at which the tone is detected; and a comparison processing section 30 which compares the first and second integrated values and determines whether the first and second material data respectively corresponding to the first and second integrated values are same based on the comparison result.

Description

  The present invention relates to a broadcast material confirmation system and a broadcast material confirmation method, and more particularly to a system and method for confirming whether or not an audio material to be broadcast has actually been broadcast.

  Conventionally, in a radio system that broadcasts audio material, whether or not the audio material is accurately broadcast according to preset operation data is confirmed based on information indicating the result of the broadcast by the control of the radio system. . However, with this method, it is possible to confirm the result of reproducing the audio material from the radio system, but it is not possible to confirm whether or not it was actually broadcasted to the outside.

  Therefore, recently, in order to solve such a problem, various kinds of confirming whether or not the sound material is broadcast correctly by comparing the sound material to be broadcast with the sound material actually broadcast Have been proposed.

  For example, in Patent Document 1, audio data in which a silent state for a predetermined time is added in advance to the head portion of audio material is generated and stored, and when a silent state is detected from broadcast audio data, Is used as a starting point, audio data for a predetermined time is stored, and the level and / or fundamental frequency of each stored audio data is compared to confirm whether or not the audio material to be broadcast has been accurately broadcast A method is described.

  Further, in Patent Document 2, a comparison pattern used when comparing input voice data is registered in advance, a start point is determined based on the level of the input voice data, and from this start point. Describes a method of performing frequency analysis on the input pattern of voice data and a comparison pattern registered in advance, and recognizing the voice based on the analysis result.

Japanese Patent Laid-Open No. 11-252588 JP 63-132300 A

  However, in the method described in Patent Document 1, it is necessary to add a silence state for a predetermined time for determining the start point to the audio material, but there is a silence state for a predetermined time at the head of the broadcast audio material. If it does not exist, the starting point of the audio material cannot be determined. In addition, when there is a silence state for a predetermined time in the sound material, it is mistaken as a start point immediately after the silence state, and the two sound materials cannot be accurately compared.

  Furthermore, when comparing the basic frequencies of two audio materials, only the audio data for a predetermined time from the start point is compared, so for audio materials exceeding the predetermined time, for example, the basic frequency of the last part of the audio material May be recognized as the same audio material even if they are different.

  In the method described in Patent Document 2, since the start point of the sound material is determined by the sound level, there is a possibility that the comparison may be started when there is sound material having the same level as the sound level of the comparison pattern during the broadcast. is there.

  That is, in the methods described in Patent Documents 1 and 2 described above, since the start point of the sound material is determined based on the presence / absence of the soundless state and the sound level, the soundless state and sound level that are the same as the predetermined time in the sound material are the same. There is a problem that audio materials cannot be accurately compared when there is a portion.

  In addition, since only a predetermined amount of time is compared from the starting point of the sound material, there is a problem that similar sound materials having different portions exceeding the predetermined time may be recognized as the same sound material.

  Therefore, the present invention has been made in view of the above-described problems in the prior art, and accurately detects whether or not the audio material to be broadcast has actually been broadcast without almost processing the material. It is an object of the present invention to provide a broadcast material confirmation system and a broadcast material confirmation method that can be used.

  In order to achieve the above object, the present invention is a broadcast material confirmation system for confirming material data broadcast from a broadcast station, and adds a tone to input material data at each predetermined first timing. A predetermined frequency analysis is performed on the first material data to which the tone is added, and a first integrated value obtained by integrating the analysis value obtained by the frequency analysis at each first timing interval is stored. And a registration processing unit that outputs the first material data to the broadcasting station, and second material data that is broadcast from the broadcasting station and to which a tone is added, and receives the second material data. The tone is detected from the second material data, the predetermined frequency analysis is performed on the second material data, and the analysis value obtained by the frequency analysis is integrated at every second timing interval at which the tone is detected. The first and second materials corresponding to the first and second integrated values are compared with the reception processing unit that stores the integrated value of 2, and the first and second integrated values, and based on the comparison result. And a comparison processing unit for determining whether or not the data is the same.

  According to the present invention, the first and second integrated values obtained based on the first and second timings are compared, and the input material data and the material data received from the broadcasting station are the same. In order to determine whether or not there is, it is possible to reliably confirm whether or not material data to be broadcast has actually been broadcast.

  In the broadcast material confirmation system, the registration processing unit includes a timing control unit that generates a first timing signal that defines the first timing, and a frequency component equal to or lower than a predetermined cutoff frequency in the input material data. And a tone that generates the first material data by adding the tone at the first timing to a band below the cut-off frequency of the material data based on the first timing signal. The adding unit and the first material data are subjected to frequency analysis, and based on the first timing signal, frequency components are integrated at each first timing interval to calculate the first integrated value. A first frequency analysis unit; a first storage unit for storing the first integrated value; and outputting the first material data to the broadcasting station. A material registration unit, and the reception processing unit detects the tone from the broadcast reception unit that receives the second material data broadcast from the broadcast station, and the second material data, and the detection The tone detection unit that generates and outputs a second timing signal that defines the second timing at the determined timing, and performs frequency analysis on the second material data, and outputs the second timing signal to the second timing signal. And a second frequency analysis unit that calculates the second integrated value by integrating frequency components at each second timing interval, and a second storage unit that stores the second integrated value. The comparison processing unit compares the first and second integrated values and determines whether or not the first and second integrated values match, and based on a determination result in the search unit , The first and second It may comprise a result output unit for the first and second material data corresponding to the calculated value to determine whether it is the same.

  In the broadcast material confirmation system, the search unit compares the first and second integrated values for each frequency component, and the frequency component having the same signal level is equal to or higher than a predetermined ratio set in advance. The first output value is determined to match the second integrated value, and the result output unit determines that the first output value is equal to or greater than a predetermined ratio set in advance by the search unit. It can be determined that the first and second material data corresponding to the second integrated value are the same. As a result, for example, when material data is broadcast from a broadcasting station, it can be determined that the first and second material data are the same even if some failure occurs.

  In the broadcast material confirmation system, the material data may be data including an audio signal.

  In the broadcast material confirmation system, the tone can be a single tone composed of a single frequency component.

  Also, the present invention is a broadcast material confirmation method for confirming material data broadcast from a broadcasting station, wherein a tone is added to input material data at each predetermined first timing, and the tone is added. A predetermined frequency analysis is performed on the first material data thus obtained, a first integrated value obtained by integrating the analysis value obtained by the frequency analysis at each first timing interval is stored, and the first Outputting material data to the broadcasting station, receiving second material data to which a tone is added, broadcast from the broadcasting station, detecting the tone from the second material data, and detecting the second The predetermined frequency analysis is performed on the material data, and a second integrated value obtained by integrating the analysis value obtained by the frequency analysis at each second timing interval at which the tone is detected is stored. And second integration Compare, comparison based on the result, wherein the first and second material data corresponding to the first and second integrated values to determine whether the same. According to the present invention, as in the case of the above-described invention, it is possible to reliably confirm whether or not material data to be broadcast has actually been broadcast.

  As described above, according to the present invention, it is possible to accurately detect whether or not an audio material to be broadcast has actually been broadcast, with little processing of the material.

It is a block diagram which shows one Embodiment of the broadcast material confirmation system which concerns on this invention. It is a basic diagram for demonstrating a high pass filter. It is a basic diagram for demonstrating a tone addition part. It is a basic diagram for demonstrating a frequency analysis part. It is a basic diagram for demonstrating extraction of the frequency component in a frequency analysis part. It is a basic diagram for demonstrating a frequency integration value memory part. It is a basic diagram for demonstrating a timing control part. It is a basic diagram for demonstrating a tone detection part. It is a basic diagram for demonstrating a frequency integration value memory part. It is a basic diagram for demonstrating a search part. It is a basic diagram for demonstrating the comparison process in a search part. It is a basic diagram for demonstrating a search part. It is a sequence diagram for demonstrating the flow of a process of the broadcast material confirmation system which concerns on this invention. It is a flowchart for demonstrating the flow of a process of a comparison process part.

  Next, an embodiment for carrying out the present invention will be described in detail with reference to the drawings.

  First, an example of the configuration of the broadcast material confirmation system according to the present invention will be described. FIG. 1 shows an embodiment of a broadcast material confirmation system according to the present invention. The broadcast material confirmation system 1 is roughly divided into audio material data (hereinafter referred to as “material data”) that is an audio signal to the broadcasting station 40. And a registration processing unit 10 that performs a predetermined frequency analysis on the material data, a reception processing unit 20 that performs a predetermined frequency analysis on the material data received from the broadcast station 40, and a registration The comparison processing unit 30 is configured to compare the results of frequency analysis on the material data by the processing unit 10 and the reception processing unit 20 and determine whether the respective material data match.

  The registration processing unit 10 includes a high pass filter (HPF) 11, a tone adding unit 12, a frequency analysis unit 13, a frequency integrated value memory unit 14, a timing control unit 15, and a sound material registration unit 16.

  The high pass filter 11 receives material data to which a material name is added, and limits frequency components below a predetermined frequency. For example, as shown in FIG. 2, the high-pass filter 11 limits frequency components that are equal to or lower than a cutoff frequency fc set in advance for input material data. The cut-off frequency fc is set, for example, so as to limit a frequency band that causes no problem with hearing. FIG. 2 shows an example where the cutoff frequency fc is 50 Hz.

  The tone adding unit 12 receives a tone having a predetermined frequency component from the timing data supplied from the timing control unit 15 to be described later with respect to the material data in which the frequency component equal to or lower than the cutoff frequency fc is limited by the high pass filter 11. It is added at the timing shown. As shown in FIG. 3, the tone is a single tone composed of a single frequency component lower than the cut-off frequency fc, for example. FIG. 3 shows an example where the tone frequency is 30 Hz and the output level is −40 dBm.

  The frequency analysis unit 13 performs frequency analysis such as FFT (Fast Fourier Transform) on the material data to which the tone is added by the tone addition unit 12, and generates a timing signal supplied from the timing control unit 15 at every predetermined timing. Based on this, an integrated value of the analysis values is calculated for each timing signal interval. Then, a predetermined number of frequencies having a high sound level are extracted from the calculated integrated value.

  Specifically, for example, as shown in FIG. 4, when the timing signal from the timing control unit 15 is supplied at 100 msec intervals, the time point when the predetermined timing signal is supplied is set as the starting point. The time when the next timing signal is supplied is set as the end point, FFT is performed to divide 100 msec from the start point to the end point at 100 Hz, and the integrated value of the analysis value is calculated for each material length every 100 msec.

  Next, as shown in FIG. 5, the frequency analysis unit 13 selects a predetermined number of frequencies having a high audio level from the integrated values of the audio level that exceed a preset threshold th with respect to the calculated integrated value. Extract. Then, using the integrated value of the frequency with the highest audio level as a reference value, the ratio of the extracted integrated values of the frequencies is calculated.

  The example of FIG. 5 shows a case where the threshold th is −20 dBm and the number of extractions is “10”. In this example, the frequency is 7.3 kHz, 5.3 kHz, 11.3 kHz, 4.6 kHz, 9.3 kHz, 2.5 kHz, 8.3 kHz, 3.9 kHz, 6.3 kHz in order from the highest sound level. An integrated value of 13.7 kHz is extracted. Then, the integrated value of 7.3 kHz having the highest audio level is set as the reference value (1.0), and the ratio of the extracted integrated values of each frequency is calculated.

  The frequency integrated value memory unit 14 stores the integrated value calculated by the frequency analyzing unit 13. When storing the integrated value, the frequency integrated value memory unit 14 creates a folder with the same name as the material name, and assigns the material name and a number indicating the division order of the material data as a name in this folder. The accumulated value is stored. For example, as shown in FIG. 6, when the material name added to the material data input to the broadcast material confirmation system 1 is “AAAA”, a folder “AAAAA” is created and the name is “AAAA-1”. ”,“ AAAA-2 ”,... For example, when the material data length is 20 seconds and the timing signal interval is 100 milliseconds, the frequency analysis unit 13 calculates only 200 integrated values, so the name of the integrated value is “AAAA− 1 "to" AAAAA-200 ".

  The timing control unit 15 generates a timing signal at every predetermined timing and supplies the timing signal to the tone adding unit 12 and the frequency analysis unit 13. As described above, the interval between the timing signals generated at each predetermined timing is the interval at which the frequency analysis value is integrated in the frequency analysis unit 13. For example, as shown in FIG. 7, the timing control unit 15 is configured by a switch that is turned ON / OFF at each predetermined timing. When the timing control unit 15 is turned ON, the timing signal is transmitted to the tone adding unit 12 and the frequency analysis unit 13 ( (Not shown).

  The audio material registration unit 16 registers the material data to which the tone is added by the tone adding unit 12 and supplies the material data to the broadcast station 40 through media or the like. The broadcasting station 40 broadcasts the material data supplied from the audio material registration unit 16 according to preset operation data.

  The reception processing unit 20 includes a broadcast reception unit 21, a tone detection unit 22, a frequency analysis unit 23, and a frequency integrated value memory unit 24. The broadcast receiving unit 21 receives material data broadcast from the broadcast station 40 and supplies the material data to the tone detection unit 22 and the frequency analysis unit 23.

  For example, the tone detection unit 22 is configured by a low-pass filter that limits frequency components of a predetermined cutoff frequency or higher with respect to input data. As shown in FIG. 8, the tone detecting unit 22 detects the tone added by the tone adding unit 12 by limiting the frequency component equal to or higher than the above-described cutoff frequency from the material data supplied from the broadcast receiving unit 21. To do. And the timing which detected the tone is supplied to the frequency analysis part 23 as timing of a starting point and an end point.

  The frequency analysis unit 23 performs the same frequency analysis (FFT or the like) as the frequency analysis performed by the frequency analysis unit 13 on the material data supplied from the broadcast reception unit 21, and the start supplied from the tone detection unit 22 The integrated value of the analysis values is calculated for each point and end point timing. Then, as with the frequency analysis unit 13, a predetermined number of frequencies having a high audio level are extracted from the calculated integrated value.

  The frequency integrated value memory unit 24 stores the integrated value calculated by the frequency analyzing unit 23 and supplies the stored integrated value to the search unit 31. When storing the integrated value, the frequency integrated value memory unit 24 creates a folder with a name based on the date and time when the material data was broadcast, and an integrated value in which a number according to the division order is assigned as the name Remember. For example, as shown in FIG. 9, when the broadcast date of the material data is “2011/12/20 16:57:20”, a folder “20111220165720” is created, and the name is “1”, “ The integrated value is stored as “2”,. For example, if the material data length is 20 seconds and the timing signal interval is 100 milliseconds, the frequency analysis unit 23 calculates only 200 integrated values, so the integrated value name is “1”. ~ "200".

  The comparison processing unit 30 includes a search unit 31 and a result output unit 32. When the integrated value is supplied from the frequency integrated value memory unit 24, the search unit 31 compares this integrated value with the integrated value stored in the frequency integrated value memory unit 14 to determine whether or not the integrated values match. Judging.

  For example, the search unit 31 confirms whether or not the characteristics of each frequency in the integrated values stored in the frequency integrated value memory unit 14 and the frequency integrated value memory unit 24 match at least a predetermined ratio set in advance. . As a result of the confirmation, if the frequency characteristics match by a predetermined ratio or more, it is determined that the integrated values match, and search information indicating “match” is output. If the matching frequency characteristics are less than a predetermined ratio, it is determined that the integrated values do not match, and search information indicating “mismatch” is output.

  Specifically, as shown in FIG. 10, the integrated value “1” in the folder “20111220165720” supplied from the frequency integrated value memory unit 24 and the folder “AAAA” stored in the frequency integrated value memory unit 14 Is compared with the integrated value “AAAA-1”. When comparing the integrated values, if, for example, 80% or more of the 10 frequency components extracted based on the threshold th match, it is determined that the integrated values match, indicating “match”. The search information is output to the result output unit 32. For example, in the example shown in FIG. 11, the integrated value “AAAA-1” stored in the frequency integrated value memory unit 14 and the integrated value “1” stored in the frequency integrated value memory unit 24 are compared, and the frequency is The characteristics (ratio with respect to the reference value) at 7.3 kHz, 4.6 kHz, 9.3 kHz, 2.5 kHz, 8.3 kHz, 3.9 kHz, 6.3 kHz, and 13.7 kHz coincide with each other, and 8 of the extracted frequency components Since the percentages match, it is determined that the integrated values match.

  Thereafter, similarly, the integrated values stored in the frequency integrated value memory unit 14 and the frequency integrated value memory unit 24 are sequentially compared based on the division order, and search information corresponding to the comparison result is output.

  Here, when the number of data of the integrated values to be compared does not match, the material data lengths are different. Therefore, the search unit 31 determines that the material data to be compared is different, and sets “no target data”. The search information shown is output.

  For example, in the example shown in FIG. 12, there are n integrated values in the folder “20111220165720”, while there are m integrated values in the folder “AAAA” that are larger than n points. In this case, the number of data stored in the folder “AAAA” and the folder “20111220165720” are different, and the m-th integrated value “AAAAA-m” in the folder “201112201616520” cannot be compared. Accordingly, in such a case, the search unit 31 outputs search information indicating “no target data”.

  The result output unit 32 outputs result information indicating the comparison result of each material data based on the search information supplied from the search unit 31. The result output unit 32 determines that the material data corresponding to each integrated value is matched when the search information indicating “match” is equal to or higher than a predetermined ratio (for example, 80% or higher), and as result information The material name is output. Further, when the search information indicating “mismatch” and / or “no target data” is less than a predetermined ratio, it is determined that the material data corresponding to each integrated value does not match, and the result information includes “material” Information indicating "None" is output.

  Next, the operation of the broadcast material confirmation system 1 having the above configuration will be described with reference to FIGS. First, the operation of the entire broadcast material confirmation system 1 will be described with reference to FIG.

  When material data is input to the broadcast material confirmation system 1, the registration processing unit 10 restricts frequency components below the cutoff frequency fc with respect to the material data input in the high-pass filter 11, and the tone adding unit 12. A tone consisting of a predetermined single frequency is added. Then, the frequency analysis unit 13 performs frequency analysis on the material data (steps S1 and S2).

  The integrated value obtained by the frequency analysis is supplied to the broadcasting station 40 via the audio material registration unit 16 (sequence SEQ1) and is stored in the frequency integrated value memory unit 14 (step S3).

  Broadcast station 40 broadcasts the material data supplied from registration processing unit 10 according to preset operation data (sequence SEQ2).

  The reception processing unit 20 receives the material data broadcast by the broadcasting station 40 by the broadcast receiving unit 21 (step S5), detects a tone from the received material data by the tone detection unit 22 (step S6), and performs frequency analysis. The unit 23 performs frequency analysis on the material data (step S7). The integrated value obtained by the frequency analysis is stored in the frequency integrated value memory unit 24 (step S8) and supplied to the search unit 31 of the comparison processing unit 30 (sequence SEQ3).

  The comparison processing unit 30 includes the integrated value supplied from the frequency integrated value memory unit 24 of the reception processing unit 20 by the search unit 31 and the integrated value (sequence SEQ4) stored in the frequency integrated value memory unit 14 of the registration processing unit 10. ), A comparison process for determining whether or not the integrated values match each other is executed, and search information indicating the comparison result of the integrated values is output (step S9). Details of this comparison process will be described later. Then, the comparison processing unit 30 causes the result output unit 32 to output result information indicating whether or not the material data corresponding to each integrated value matches based on the search information.

  Next, details of the comparison processing by the search unit 31 in step 9 of FIG. 13 will be described with reference to FIG.

  First, in step S11, the integrated value in the predetermined folder supplied from the frequency integrated value memory unit 24 to the search unit 31 is compared with the integrated value in the predetermined folder stored in the frequency integrated value memory unit 14. The Here, first, among the integrated values stored in the respective folders, the first integrated values are compared with each other. For example, in the example shown in FIG. 10, the integrated value “1” in the folder “20111220165720” supplied from the frequency integrated value memory unit 24 and the integrated value in the folder “AAAA” stored in the frequency integrated value memory unit 14. “AAAA-1” is compared.

  Next, as a result of the comparison in step S11, it is determined whether or not the integrated values match (step S12). Specifically, for example, a plurality of frequency components extracted based on the threshold th are compared, and it is confirmed whether or not the ratio of the matching frequency component to the reference value of the sound level matches. Then, when the frequency components having the same ratio among the plurality of frequency components become equal to or greater than a predetermined ratio, it is determined that the respective integrated values match. In other cases, the respective integrated values match. It is judged not to.

  For example, when the frequency components having the same ratio among the plurality of frequency components are 80% or more, it is determined that the integrated values match. In the example shown in FIG. 11, since the ratios of 8 points out of 10 frequency components match, it is determined that the integrated values match.

  Next, when it is determined that the integrated values match (step S12; Yes), search information indicating “match” is output (step S13). On the other hand, if it is determined that the integrated values do not match (step S12; No), search information indicating “mismatch” is output (step S14).

  Next, it is determined whether or not there is an integrated value to be compared next in each folder (step S15). If the next integrated value exists (step S15; Yes), the process returns to step S11, and the next integrated values stored in the respective folders are compared with each other. When the next integrated value does not exist (step S15; No), it is determined whether or not the number of integrated value data stored in each folder matches (step S16), and the number of integrated value data is determined. If they match (step S16; Yes), the series of processing ends.

  On the other hand, when the number of data of the integrated values does not match (step S16; No), since the integrated values to be compared are different, search information indicating “no target data” is output (step S17).

  As described above, according to the present embodiment, the tone is added to the input material data based on the timing of the timing signal generated by the timing control unit, and the material data to which the tone is added is added. Based on the integrated value obtained by performing frequency analysis and the material data received from the broadcast station with the tone added, the material data received from the broadcast station is detected based on the timing at which the tone was detected. The integrated values obtained by performing the frequency analysis are compared, and it is determined whether or not the material data corresponding to each integrated value is the same. At this time, if the input material data and the broadcasted material data are the same, the timings based on the tone are the same, and thus the respective integrated values match. This makes it possible to reliably detect whether the material data has been broadcast.

DESCRIPTION OF SYMBOLS 1 Broadcast material confirmation system 10 Registration processing part 11 High pass filter 12 Tone addition part 13 Frequency analysis part 14 Frequency integrated value memory part 15 Timing control part 16 Audio material registration part 20 Reception processing part 21 Broadcast reception part 22 Tone detection part 23 Frequency analysis Unit 24 frequency integrated value memory unit 30 comparison processing unit 31 search unit 32 result output unit 40 broadcast station

Claims (6)

A broadcast material confirmation system for confirming material data broadcast from a broadcasting station,
Tones are added to the input material data at every predetermined first timing,
A predetermined frequency analysis is performed on the first material data to which the tone is added, and a first integrated value obtained by integrating the analysis value obtained by the frequency analysis at each first timing interval is stored. ,
A registration processing unit for outputting the first material data to the broadcasting station;
Receiving the second material data to which the tone is added, broadcast from the broadcasting station;
Detecting the tone from the second material data;
Reception that stores the second integrated value obtained by performing the predetermined frequency analysis on the second material data and integrating the analysis value obtained by the frequency analysis at every second timing interval at which the tone is detected. A processing unit;
Comparing the first and second integrated values;
A broadcast material confirmation comprising: a comparison processing unit for determining whether or not the first and second material data corresponding to the first and second integrated values are the same based on a comparison result system. The registration processing unit
A timing control unit that generates a first timing signal that defines the first timing;
A high-pass filter that limits frequency components below a predetermined cutoff frequency in the input material data;
A tone adding unit that generates the first material data by adding the tone at the first timing to a band below the cutoff frequency of the material data based on the first timing signal;
A first frequency for performing frequency analysis on the first material data and calculating the first integrated value by integrating frequency components for each first timing interval based on the first timing signal The analysis department;
A first storage unit for storing the first integrated value;
A material registration unit for outputting the first material data to the broadcasting station,
The reception processing unit
A broadcast receiver for receiving the second material data broadcast from the broadcast station;
A tone detector that detects the tone from the second material data and generates and outputs a second timing signal that defines the second timing at the detected timing;
A second frequency for performing frequency analysis on the second material data and calculating the second integrated value by integrating frequency components for each second timing interval based on the second timing signal; The analysis department;
A second storage unit for storing the second integrated value,
The comparison processing unit
A search unit that compares the first and second integrated values and determines whether or not the first and second integrated values match;
A result output unit for determining whether or not the first and second material data corresponding to the first and second integrated values are the same based on a determination result in the search unit, The broadcast material confirmation system according to claim 1. The search unit
The first and second integrated values are compared for each frequency component, and when the frequency components having the same signal level are equal to or higher than a predetermined ratio, the first and second integrated values match. Judging
The result output unit
The first and second material data corresponding to the first and second integrated values are the same when the integrated values determined to match by the search unit are greater than or equal to a predetermined ratio set in advance. The broadcast material confirmation system according to claim 2, wherein the broadcast material confirmation system is determined.   The broadcast material confirmation system according to claim 1, 2 or 3, wherein the material data includes an audio signal.   5. The broadcast material confirmation system according to claim 1, wherein the tone is a single tone composed of a single frequency component. A broadcast material confirmation method for confirming material data broadcast from a broadcasting station,
Tones are added to the input material data at every predetermined first timing,
A predetermined frequency analysis is performed on the first material data to which the tone is added, and a first integrated value obtained by integrating the analysis value obtained by the frequency analysis for each of the first timing intervals is stored.
Outputting the first material data to the broadcasting station;
Receiving the second material data to which the tone is added, broadcast from the broadcasting station;
Detecting the tone from the second material data;
Performing the predetermined frequency analysis on the second material data, storing a second integrated value obtained by integrating the analysis value obtained by the frequency analysis at each second timing interval in which the tone is detected;
Comparing the first and second integrated values;
A broadcast material confirmation method, wherein, based on a comparison result, it is determined whether or not the first and second material data corresponding to the first and second integrated values are the same.

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