JP6927726B2 - Broadcast system and slave station equipment - Google Patents

Description

The present invention relates to a broadcast broadcasting system including a master station device for transmitting broadcast audio and a slave station device for receiving and reproducing and outputting broadcast audio.

The introduction of a regional disaster prevention (radio) system is being promoted as a means of protecting the lives and property of local residents from disasters such as typhoons, floods, and earthquakes. , It is operated to guide evacuation. As a disaster prevention measure, a means of transmitting information in an emergency is important, but a comprehensive system that includes the establishment of a disaster response headquarters, evacuation facilities for residents, and securing of 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 radio broadcast system is known. In this municipal disaster prevention radio broadcast system, emergency information etc. is transmitted from the master station device to an outdoor loudspeaker station installed outdoors and equipped with a public address system or a door-to-door receiver installed indoors. NS. The outdoor public address system that receives the emergency information, etc., transmits the emergency information, etc. to the local residents by voice notification using the public address system. Further, the door-to-door receiver that has received the emergency information or the like outputs the emergency information or the like to the display unit or the voice output unit of the door-to-door receiver.
For example, Patent Document 1 discloses an example in which a parent station notifies local residents and passersby of public information and disaster prevention information by a municipal digital broadcasting communication system, which is one of the broadcasting systems. ..

Japanese Unexamined Patent Publication No. 2011-188169

Each slave station device (outdoor loudspeaker station or door-to-door receiver) amplifies the report content received from the master station device to a predetermined power, and makes a loudspeaker report via a speaker. In addition, when broadcasting outdoors, in order to prevent the reverberation from making it difficult to hear the voice, the whistleblower intentionally speaks slowly to minimize the effect of the reverberation. Here, the reverberation is a complex combination of reflected sounds in which sound waves from a sound source are reflected by a wall or the like and energy is attenuated, and arrives late from various directions.

Conventionally, when broadcasting to an outdoor loudspeaker station and a door-to-door receiver, for example, when making a batch report to all slave station devices, in order to suppress the reverberation effect of the sound of the outdoor loudspeaker station. , The whistleblower intentionally speaks slowly, but for those who are listening to this with a door-to-door receiver, there is a problem that it is too slow and difficult to hear. Also, for outdoor broadcasting, areas that are susceptible to reverberation (for example, there are mountains or tall buildings nearby) and areas that are not easily affected by reverberation (for example, reporting to the sea side) Depending on the distribution destination (for example, when an elderly person is used), a slower speed than usual is preferable for the door-to-door receiver installed indoors. It's different. Further, there is a problem that it is difficult for a person who is not accustomed to reporting to speak slowly.

The present invention has been made in view of the above-mentioned conventional circumstances, and it is not necessary for the whistleblower to adjust his / her own utterance speed when uttering the content of the report, and the reporter makes a report in the slave station device. The purpose is to be able to control the speed.

In order to achieve the above object, the present invention has configured the broadcast broadcasting system as follows.
That is, in the broadcast reporting system including the master station device for transmitting the report voice and the slave station device for receiving and reproducing the report voice, the master station device associates the report voice with the information on the reproduction speed. Is transmitted, and 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, the reproduction speed of the notification voice in the slave station device can be controlled from the master station device. Therefore, when the whistleblower utters the content of the report, it is possible to control the report speed in the slave station device without having to adjust the utterance speed of the whistleblower.

Here, as an example of the configuration, the slave station device stores preset playback speed information, and based on the playback speed information received from the master station device and the preset playback speed information. , The playback speed of the notification voice may be determined. As a result, the slave station device can determine the reproduction speed of the notification voice based on the preset reproduction speed. Therefore, for example, when a plurality of slave station devices make a report, even if the same playback speed is specified in the master station device, each slave station device can make a report at a different speed.

According to the present invention, it becomes possible to control the reporting speed in the slave station device without the need for the whistleblower to adjust his / her own vocalizing speed when vocalizing the reporting content.

It is a figure which shows the structural example of the broadcast broadcasting 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 notification voice in the broadcast system of FIG.

The broadcast broadcasting system according to the 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 system of this example is a municipal digital broadcast communication system, in which a master station facility 100 as a master station device and a plurality of n slave station devices 200-1, 200-2, ..., It has 200-n (hereinafter, when the slave station devices 200-1, 200-2, ..., 200-n are not distinguished, it is simply referred to as the slave station device 200).

In the broadcast broadcasting system of this example, roughly, the master station equipment 100 transmits the reproduction speed information in association with the notification voice, and the slave station device 200 receives the reproduction speed information from the master station device 100. Based on the above, the playback speed of the notification voice is controlled. Information on the reproduction speed transmitted from the master station equipment 100 to the slave station device 200 can be input by, for example, a whistleblower who is a handler of the master station equipment 100 by operating the master station equipment 100. Therefore, it becomes possible to control the reporting speed in the slave station device 200 without the need for the whistleblower to adjust his / her own vocalizing speed when vocalizing the reporting content.
Hereinafter, the broadcast 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, a city hall or a town / village office. The master station equipment 100 includes an operation console 120 and a wireless device 140.
The operation console 120 includes a control unit 121, a storage unit 122, a microphone 123, and an operation unit 124. The operator (reporter) of the operation console 120 operates the operation unit 124 to input various settings related to the report (for example, designation of the report destination slave station, playback speed of the report voice, etc.) and reports to the microphone 123. Input voice. The operation 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 a voice signal including a notification voice input by the microphone 123. The input of the setting including the report start time may be received from the operation unit 124 and stored in the storage unit 122 together with the report voice, and the report signal may be output to the wireless device 140 when the report start time arrives.
The wireless device 140 modulates the notification signal input from the console 120 and wirelessly transmits it to the slave station device 200 via the 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, a door-to-door receiver installed indoors, and the like.
The slave station device 200 includes a control unit 201, a radio unit 202, a storage unit 204, a sound amplifier unit 205, and a sound output unit 206. Under the control of the control unit 201, the slave station device 200 demodulates the notification signal received from the wireless device 140 of the master station equipment 100 via the antenna by the wireless unit 202, and stores the D / A-converted notification sound. The recording is performed on the 204, and then the notification sound is amplified by the sound amplifier unit 205 and output as a loudspeaker from the sound output unit 206.

Further, the slave station 200 holds information on the reproduction speed preset for the own station in the storage unit 204, and is used when reproducing the notification voice recorded in the storage unit 204. The playback speed information preset 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 a notification operation in the master station equipment 100 to sound source reproduction in the slave station device 200 as an example of the processing flow by the broadcast broadcasting system of FIG.
The master station equipment 100 transmits a notification signal to the slave station device 200 (step S1). The notification signal includes information on the playback speed applied in this notification. Hereinafter, the reproduction speed preset in the slave station device 200 is referred to as “self-station holding speed setting”, and the reproduction speed specified by the notification signal from the master station equipment 100 is referred to as “reporting speed setting”.

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

When the slave station device 200 D / A-converts the sound source of the notification voice, the slave station device 200 records the D / A-converted sound source (step S6). Next, the slave station device 200 compares the speed setting for holding the own station with the speed setting at the time of reporting (step S7), and if the speed setting for holding the own station <the speed setting at the time of reporting, the slave station device 200 holds the own station. The notification voice is played back at the speed setting of (step S8), and when the speed setting for holding the own station ≥ the speed setting at the time of reporting, the notification voice is played back at the speed setting at the time of reporting (step S9). After that, the slave station device 200 amplifies the reproduced notification voice to a predetermined level (step S10) and outputs a loud voice (step S11).

FIG. 3 shows an example of the reproduction speed of the notification voice in the broadcast broadcasting system of FIG.
The slave station device 200 holds in advance a speed setting according to the type of its own station and the installation environment. In this example, the speed setting for holding the own station in the slave station device 200 is "1.0 times speed" in the case of a door-to-door receiver distributed to the general public, and "0.9" in the case of a door-to-door receiver distributed to the elderly. "Double speed" is set, "0.8x speed" is set for outdoor loudspeaker stations in scattered areas, and "0.6x speed" is set for outdoor loudspeaker stations in dense areas. In addition, the speed setting at the time of notification set by the console 120 is "1.0x speed", "0.9x speed", "0.8x speed", "0.7x speed", "0.6x speed". , "0.5x speed" is specified. In either combination, if the speed setting for holding the own station <the speed setting for reporting, the speed setting for holding the own station is applied, and if the speed setting for holding the own station ≥ the speed setting for reporting, the speed setting for reporting Has been applied.

As described above, in the broadcast system of this example, the slave station device 200 holds the information of the reproduction speed preset for the own station, and the reproduction received at the time of reporting from the master station equipment 100. It is configured to determine the playback speed of the notification voice based on the speed information and the playback speed information held by the own station. Therefore, the whistleblower can adjust the playback speed of the whistleblower voice according to the slave station device 200 by setting only one type of speed at the time of whistleblower. In particular, since the slave station device 200 of this example holds information on the playback speed preset according to the type and installation environment, the playback speed is adjusted according to the type and installation environment of the slave station device 200. can do. Moreover, when the speed setting at the time of notification is faster than the speed setting of the slave station holding, the slave station device 200 applies the speed setting of the own station holding, so that the slave station device 200 has an unfavorable playback speed. The notification voice is not played.

In this example, the speed setting for holding the own station is set as the upper limit, and the slower speed setting for holding the own station and the speed setting at the time of reporting are selected to determine the playback speed of the notification voice. The reporting speed may be determined by using another method that can uniquely specify a value within the range of the speed setting of and the speed setting at the time of reporting. For example, the average value of the speed setting for holding 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 system of this example, a sound source other than the sound input by the whistleblower through the microphone, for example, a sound source such as a siren, a chime, or a music chime, may be reproduced and output from the slave station device 200 at the same speed. Therefore, 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 voice, the pitch changes at the same time as the tempo is simply changed. In other words, the faster the tempo, the higher the sound. Therefore, in the broadcast system of this example, the reproduction speed of the notification voice is adjusted by using a method such as the CUT & SLICE method that does not involve pitch modulation. For example, a very short part of sound data is deleted or repeatedly reproduced. Specifically, by subdividing the sound data into blocks of several tens to several hundreds of milliseconds and deleting or repeating a part of each block, not only the pitch but also the tone color 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 input by the whistleblower (sound source with the content of the report) is played back at a playback speed that is easy to hear, while the sound source such as siren, chime, and music chime (sound source without the content of the report) is played at the normal playback speed. It can be played back at, making it easier for residents to hear the content of the report.

In addition, since the playback speed can be set individually for each slave station device 200, the installation environment of the outdoor loudspeaker station (presence or absence of reverberation) and the distribution destination of the individual receiver (whether or not it is for the elderly). Since the setting can be changed one by one according to the above, speed control corresponding to various cases can be performed. Furthermore, since the whistleblower can make a report without being aware of his / her own vocalization speed (speaking speed), usability is also improved. Further, since the reproduction speed of the slave station device 200 can be preset remotely from the console 120 of the master station equipment 100, it is possible to reduce the burden on the operator who installs the slave station device 200 on site.

Further, the setting of the playback speed to be transmitted at the time of reporting does not necessarily have to be input by the whistleblower operating the console 120 each time a report is made. As an example, the playback speed is set in advance in association with the whistleblower and stored in the storage unit 122 of the console 120, recognizes which whistleblower is the handler of the console 120, and the whistleblower. The reproduction speed corresponding to the above may be read out and transmitted to the slave station device 200. As another example, a function unit that analyzes voice and automatically calculates a playback speed suitable for loudspeaker broadcasting is provided on the console 120, and the playback speed calculated from the notification voice input by the microphone is transmitted to the slave station device 200. It may be configured to be used.

The configuration of the system or device according to the present invention is not necessarily limited to the one shown 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 these may be connected by a cable or the like.
Further, the present invention can be provided, for example, as a method or method for executing the process according to the present invention, a program for realizing such a method or method, a storage medium for storing the program, or the like.

The present invention can be used in a broadcast broadcasting system including a master station device for transmitting broadcast audio and a slave station device for receiving and reproducing and outputting broadcast audio.

100: Master station equipment, 120: Operation 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 Unit, 202: Wireless unit, 204: Storage unit, 205: Sound amplifier unit, 205: Audio output unit

Claims (2)

In a broadcast reporting system including a master station device that transmits a notification voice and a slave station device that receives and reproduces the notification voice.
The master station device transmits information on the playback speed in association with the notification voice,
The slave station device stores preset playback speed information, and reproduces the notification voice based on the playback speed information received from the master station device and the set playback speed information. A broadcast notification system characterized in that the speed is determined and the playback speed of the notification voice is controlled. In the slave station device that receives the notification voice transmitted from the master station device and reproduces it.
It stores preset playback speed information and stores
The playback speed information transmitted in association with the notification voice is received from the master station device, and the information is received.
A slave station device characterized in that the reproduction speed of the notification voice is determined based on the received reproduction speed information and the set reproduction speed information, and the reproduction speed of the notification voice is controlled.

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