JP2018166270A - Broadcasting system and slave station device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a communicant for controlling the communication velocity in a slave station device, without adjusting the vocalization velocity of oneself, when the communicant vocalizes the communication content.SOLUTION: In a broadcasting system including a master station facility 100 for transmitting notice voice, and slave station devices 200 for receiving the notice voice and outputting while reproducing, the master station device 100 transmits the information of reproduction speed in association with the notice voice, and the slave station device 200 controls reproduction speed of the notice voice, on the basis of the information of reproduction speed received from the master station device 100. Furthermore, the slave station device 200 is holding the information of reproduction speed preset for the local station, and determines the reproduction speed of the notice voice, on the basis of the information of reproduction speed received from the master station device 100 at the time of communication, and the information of reproduction speed held in the local station.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a broadcast broadcasting system including a master station device that transmits broadcast sound and a slave station device that receives the broadcast sound and reproduces and outputs it.

  As a means of protecting the lives and property of local residents from disasters such as typhoons, floods, and earthquakes, the introduction of regional disaster prevention (wireless) systems is being promoted, and in the event of a disaster, various information is quickly transmitted to the residents. It is operated to conduct evacuation guidance. As a disaster prevention measure, emergency information transmission means are important, but a comprehensive system including the establishment of a disaster response headquarters, evacuation facilities, and securing relief supplies is called a disaster prevention system.

As a transmission of information in a conventional disaster prevention system, for example, a municipal disaster prevention wireless broadcast system is known. In this municipal disaster prevention radio broadcast system, emergency information is transmitted from the master station device to outdoor loudspeaker stations installed outdoors and equipped with loudspeakers, or to individual receivers installed in the house. The The outdoor loudspeaker station that has received the emergency information and the like transmits the emergency information and the like to the local residents in a batch by voice report using a loudspeaker. Moreover, the door-to-door receiver that has received the emergency information and the like outputs the emergency information and the like to the display unit and the audio output unit of the door-to-door receiver.
For example, Patent Document 1 discloses an embodiment in which public information and disaster prevention information are notified from a master station to neighboring residents and passersby by a municipal digital broadcast communication system which is one of broadcast broadcasting systems. .

JP 2011-188169 A

  Each slave station device (outdoor loudspeaker slave station or individual receiver) amplifies the content of the report received from the master station device to a predetermined power level, and issues a loudspeak report via a speaker. In addition, when performing outdoor broadcasting, in order to prevent the sound from becoming difficult to hear due to reverberation, the reporter intentionally utters slowly so as to minimize the influence of reverberation. Here, the reverberation is a complex combination of reflected sounds that arrive after a delay from various directions as the sound waves from the sound source are reflected on the wall and the like while the energy is attenuated.

  Conventionally, when broadcasting to outdoor loudspeakers and door-to-door receivers, for example, when reporting to all slave stations at once, in order to suppress the reverberation effect of the sound of outdoor loudspeakers The whistleblower intentionally utters slowly, but there is a problem that it is too slow and difficult to hear for those who are listening to this at the door-to-door receiver. Also, for outdoor broadcasting, areas that are susceptible to reverberation (for example, mountains nearby or tall buildings), areas that are not susceptible to reverberation (for example, reporting to the sea side) Etc., and the indoor receivers that are installed indoors also have an optimal notification speed for each slave station device, such as a slower speed than usual, depending on the distribution destination (for example, when elderly people are used). Is different. Furthermore, there is a problem that it is difficult for a person who is not used to reporting to speak slowly.

  The present invention has been made in view of the above-described conventional circumstances, and it is not necessary for the reporter to adjust his / her voice rate when he / she utters the content of the report, so that the report at the slave station device is not required. The purpose is to be able to control the speed.

In the present invention, in order to achieve the above object, a broadcast broadcasting system is configured as follows.
That is, in a broadcast notification system including a master station device that transmits a notification sound and a slave station device that receives and reproduces the notification sound, the master station device reproduces information on the playback speed in association with the notification sound. The slave station device controls the playback speed of the notification voice based on the playback speed information received from the master station device.

  With such a configuration, it is possible to control the playback speed of the notification voice in the slave station device from the master station device. Therefore, when the reporter utters the content of the report, the report speed in the slave station device can be controlled without having to adjust the utterance speed of the reporter.

  Here, as an example of the configuration, the slave station device stores information on a preset playback speed, and based on the playback speed information received from the master station device and the preset playback speed information. Alternatively, the playback speed of the report voice may be determined. Thereby, the slave station apparatus can determine the playback speed of the notification voice based on the playback speed set in advance. Therefore, for example, when reporting is performed by a plurality of slave station devices, even if the same playback speed is specified by the master station device, it is possible to report at different rates at each slave station device.

  According to the present invention, it is possible to control the reporting speed in the slave station apparatus without requiring the reporting person to utter his / her reporting content without adjusting his / her speech rate.

It is a figure which shows the structural example of the broadcast system which concerns on one Embodiment of this invention. It is a figure which shows the example of the processing flow by the broadcast broadcasting system of FIG. It is a figure which shows the example of the reproduction speed of the report audio | voice in the broadcast system of FIG.

A broadcast broadcasting system according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a configuration example of a broadcast broadcasting system according to an embodiment of the present invention. The broadcast broadcasting system of this example is a municipal digital broadcast communication system, and a master station equipment 100 as a master station device and a plurality of n slave station devices 200-1, 200-2,. 200-n (hereinafter, the slave station devices 200-1, 200-2,..., 200-n are simply referred to as slave station devices 200).

In the broadcast broadcasting system of this example, generally, the master station equipment 100 transmits playback speed information in association with the notification voice, and the slave station apparatus 200 receives the playback speed information received from the master station apparatus 100. Is configured to control the playback speed of the notification voice. The information on the reproduction speed transmitted from the master station equipment 100 to the slave station apparatus 200 can be input by operating the master station equipment 100 by a reporter who is a handler of the master station equipment 100, for example. For this reason, when the reporter utters the content of the report, the report speed in the slave station device 200 can be controlled without having to adjust the utterance speed of the reporter.
Hereinafter, the broadcast broadcasting system of this example will be specifically described.

The master station equipment 100 is usually installed in a building of an administrative authority such as a disaster prevention center, city hall or town / village office. The master station equipment 100 includes a console 120 and a wireless device 140.
The console 120 includes a control unit 121, a storage unit 122, a microphone 123, and an operation unit 124. The operator (reporter) of the console 120 operates the operation unit 124 to input various settings relating to the report (for example, designation of a report destination slave station, the playback speed of the report voice), and report to the microphone 123. Input audio. The console 120 generates a notification signal and outputs it to the wireless device 140 under the control of the control unit 121. The notification signal includes a control signal including various settings input by the operation unit 124 and an audio signal including a notification sound input by the microphone 123. Note that an input of settings including the notification start time may be received from the operation unit 124 and stored in the storage unit 122 together with the notification voice, and the notification signal may be output to the wireless device 140 when the notification start time arrives.
Radio apparatus 140 modulates the notification signal input from console 120 and transmits it to slave station apparatus 200 wirelessly via an antenna.

The slave station device 200 is a terminal station installed in various places within the administrative jurisdiction, and includes an outdoor loudspeaker station installed outdoors and a door-to-door receiver installed in a house.
The slave station device 200 includes a control unit 201, a wireless unit 202, a storage unit 204, an audio amplification unit 205, and an audio output unit 206. Under the control of the control unit 201, the slave station device 200 demodulates the report signal received via the antenna from the radio device 140 of the master station facility 100 by the radio unit 202, and stores the D / A converted report voice as a storage unit The information is recorded in 204, and then the notification voice is amplified by the voice amplifying unit 205 and output from the voice output unit 206.

  Further, the slave station 200 holds information on the reproduction speed set in advance for the own station in the storage unit 204, and is used when the notification voice recorded in the storage unit 204 is reproduced. The information on the reproduction speed set in advance in the slave station device 200 may be input by directly operating the slave station device 200 or by remote operation using the console 120 of the master station equipment 100. .

FIG. 2 shows a processing flow from the notification operation at the master station equipment 100 to the sound source reproduction at the slave station device 200 as an example of the processing flow by the broadcast broadcasting system of FIG.
A notification signal is transmitted from the master station equipment 100 to the slave station device 200 (step S1). The notification signal includes information on the playback speed applied in this notification. Hereinafter, the playback speed set in advance in the slave station device 200 is referred to as “own station held speed setting”, and the playback speed specified by the report signal from the master station equipment 100 is referred to as “report speed setting”.

  All the slave station devices 200 in the system receive the report signal (step S2) and determine whether the report signal is directed to the own station (whether or not it is designated as a report destination slave station) (step S3). . The slave station device 200 performs D / A conversion on the sound source of the notification sound when the notification signal is directed to the own station (step S4), and transitions to a standby state when the notification signal is not directed to the own station (step S4). Step S5).

  The slave station device 200, when D / A converting the sound source of the report voice, records the D / A converted sound source (step S6). Next, the slave station device 200 compares the speed setting of the local station with the speed setting at the time of reporting (step S7), and if the speed setting of the local station is less than the speed setting at the time of reporting, The notification voice is reproduced at the speed setting (step S8), and if the own-station held speed setting ≧ the speed setting at the time of notification, the notification voice is reproduced at the speed setting at the time of notification (step S9). Thereafter, the slave station device 200 amplifies the reproduced notification voice to a predetermined level (step S10), and outputs the amplified voice (step S11).

FIG. 3 shows an example of the reproduction speed of the notification sound in the broadcast broadcasting system of FIG.
The slave station device 200 holds in advance speed settings according to the type of the own station and the installation environment. In this example, as the speed setting of the local station holding in the slave station device 200, “1.0 times speed” is set for a general-distributed household receiver, and “0.9” is set for an elderly-distributed household receiver. “Double speed”, “0.8 times speed” is set for outdoor loudspeaker stations in scattered areas, and “0.6 times speed” is set for outdoor loudspeaker stations in crowded areas. In addition, the speed setting at the time of notification set by the console 120 is “1.0 times speed”, “0.9 times speed”, “0.8 times speed”, “0.7 times speed”, “0.6 times speed”. , “0.5 times speed” is designated. Regardless of the combination, if your own station holding speed setting <the speed setting at the time of reporting, the own station holding speed setting is applied, and if your own station holding speed setting ≥ the speed setting at the time of reporting, the speed setting at the time of reporting Has been applied.

  As described above, in the broadcast broadcasting system of this example, the slave station device 200 holds the information on the reproduction speed set in advance for the own station, and the reproduction received at the time of reporting from the master station equipment 100 Based on the speed information and the playback speed information held by the own station, the playback speed of the report voice is determined. For this reason, the reporter can adjust the playback speed of the report voice according to the slave station device 200 only by setting one type of speed when reporting. In particular, since the slave station device 200 of this example holds information on the reproduction speed set in advance according to the type and installation environment, the reproduction speed is adjusted according to the type and installation environment of the slave station device 200. can do. Moreover, if the speed setting at the time of reporting is faster than the speed setting at the local station, the slave station apparatus 200 applies the speed setting at the local station, so that the slave station apparatus 200 has an unfavorable playback speed. The alert voice is not played back.

  In this example, the speed setting for own station holding is set as the upper limit, and the playback speed of the report voice is determined by selecting the slower speed setting for own station holding and the speed setting for reporting. The notification speed may be determined using another method that can uniquely specify a value within the range between the speed setting and the speed setting at the time of notification. For example, the average value of the speed setting of the own station and the speed setting at the time of reporting may be determined as the playback speed of the reporting voice.

  Here, in the broadcast broadcasting system of this example, a sound source that is not the voice input by the reporter, for example, a sound source such as a siren, chime, or music chime may be reproduced and output from the slave station device 200 at the same speed. Since it is preferable, the sound source is held in the storage unit 204 of the slave station device 200, and the sound source is reproduced by the activation signal from the master station equipment 100.

  In the case of audio, the pitch changes simultaneously with simply changing the tempo. In other words, when the tempo is increased, the sound becomes higher accordingly. Therefore, in the broadcast broadcasting system of this example, the adjustment of the playback speed of the notification voice is performed using a technique such as the CUT & SLICE method that does not involve pitch modulation. For example, a very short part of the sound data is deleted or repeatedly reproduced. Specifically, the sound data is subdivided into blocks of tens to hundreds of milliseconds, and a part of each block is deleted or repeated, so that the tone and the development of the song are not changed. Only the tempo can be modulated. Such processing can be performed using a DSP (Digital Signal Processor). As a result, the voice (sound source with notification content) input by the caller is played at a playback speed that is easy to hear, while the sound source (sound source without notification content) such as siren, chime, and music chime is played at normal playback speed. The residents can easily listen to the contents of the report.

  In addition, since the playback speed can be individually set for each slave station device 200, the installation environment of the outdoor loudspeaker slave station (presence of reverberation) and the distribution destination of the door-to-door receiver (whether for the elderly) Since the setting can be changed one by one according to, etc., speed control corresponding to various cases can be performed. Furthermore, since the reporter can make a report without being aware of his / her speaking speed (speaking speed), usability is improved. In addition, since the reproduction speed for the slave station apparatus 200 can be set in advance remotely from the console 120 of the master station equipment 100, the burden on the operator who installs the slave station apparatus 200 in the field can be reduced.

  Further, the setting of the playback speed to be transmitted at the time of reporting does not necessarily need to be input by the reporter operating the console 120 every time reporting is performed. As an example, a playback speed is set in advance in association with the reporter and is stored in the storage unit 122 of the console 120, and the reporter who recognizes the operator of the console 120 is recognized. It is also possible to read out the playback speed corresponding to and transmit it to the slave station device 200. As another example, the console 120 is provided with a functional unit that analyzes voice and automatically calculates a playback speed suitable for loudspeaker broadcasting, and transmits the playback speed calculated from the notification voice input to the microphone to the slave station device 200. It is good also as composition to do.

Note that the configurations of the system and apparatus according to the present invention are not necessarily limited to those described above, and various configurations may be used. For example, in the broadcast broadcasting system of this example, communication between the master station equipment 100 and the slave station device 200 is performed wirelessly, but a configuration in which these are connected by a cable or the like may be used.
The present invention can also be provided as, for example, a method and method for executing the processing according to the present invention, a program for realizing such a method and method, and a storage medium for storing the program.

  INDUSTRIAL APPLICABILITY The present invention can be used in a broadcast broadcasting system including a master station device that transmits broadcast sound and a slave station device that receives broadcast sound and reproduces and outputs it.

  100: Master station equipment, 120: Console, 121: Control unit, 122: Storage unit, 123: Microphone, 124: Operation unit, 140: Wireless device, 200-1 to 200-n: Slave station device, 201: Control 202: Radio unit 204: Storage unit 205: Audio amplification unit 205: Audio output unit

Claims (4)

In a broadcast notification system comprising a master station device that transmits a notification sound and a slave station device that receives and reproduces the notification sound,
The master station device transmits reproduction speed information in association with the notification voice,
The broadcast station system, wherein the slave station apparatus controls the playback speed of the report voice based on the playback speed information received from the master station apparatus. In the broadcast notification system according to claim 1,
The slave station device stores information on a preset playback speed, and based on the playback speed information received from the master station device and the set playback speed information, playback of the notification voice is performed. A broadcast system characterized by determining the speed. In the slave station device that receives and reproduces the report voice transmitted from the master station device,
From the master station device, receiving information on the playback speed transmitted in association with the notification voice,
A slave station apparatus that controls the playback speed of the notification voice based on the received playback speed information. The slave station device according to claim 3,
A child that stores information on a preset playback speed and determines the playback speed of the notification voice based on the received information on the playback speed and the information on the set playback speed. Station equipment.

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