The structure of the audio system for sports live demonstration activities

Foreword: [In the live show of sports events, the stage programs composed of live broadcasters, music, video and lighting are becoming more and more popular, so the audio part of the stadium is the highlight. Due to the characteristics of the site and application, the entire structure and operation are basically composed of the following points.

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1. System concept <br> build a sports show in each event, at the same time take advantage of the museum's original stadium sound system, targeted to improve or expand according to the characteristics of sports show, following in the implementation Some important links need to be arranged reasonably.

1.1 Architecture of Audio System <br> The general sports exhibition activities are composed of music control, live broadcast, video control, game information collection and transmission, and other technical personnel and coordination leaders to form a relatively independent team. The implementation of sports single-item display teams often needs to be collected in dedicated work rooms or on-site designated work areas due to actual work needs, in order to facilitate good communication and coordination between each other. This makes it possible for technicians to have unequal distances from the stadium's audio control room, thus affecting operation.

The most feasible solution is to lay a two-way transmission audio cable in the sound control room and the operation site, and add an independent sub-control mixer, so that the sound control personnel can cooperate with the live broadcast, video display and event information release in real time. Audio switching control. Each signal source required for the event can be connected to it (such as CD, MD, MP3, PC, DJMIXER, MIC), and the display of each channel level meter is adjusted to about 0dB, and the maximum output of the main output does not exceed + When 3dB, the main output is connected to the input channel of the main control console of the sound control room via the audio cable, and the input and output channel levels can be adjusted to the same state. The purpose is to ensure that the main and auxiliary consoles have the standard of no distortion. Large dynamic signal level output.

Next, the AUX output of the main control console of the sound control room is connected to the direct control console. According to this method, the audio signal of the large-screen control room and the sound control room of the stadium can be connected, so that an internal monitoring intercom system between multiple points can be formed. In the busy communication time, the telephone and the intercom are often busy, and a well-equipped internal monitoring intercom system can be used to improve the coordination and operational reliability of each working point.

If the field conditions permit, the sub-control console can use a small digital mixer, its channel automatic gain control (AGC), various dynamic processing (GATE\DUCK\COMP\EXP), graphic and parametric equalization (GEQ\PEQ). The effector (EFF) is very suitable for sound reinforcement in the field. In the early stage, each channel and output parameter settings are edited according to the requirements of use, and the save and corresponding scenes are named. After the system is connected, the system can be called directly. This way not only can obtain high-quality sound reinforcement signal, but also improve the safety and stability of the whole system, and greatly reduce the on-site tuning pressure and workload, so that the sound control personnel have enough time and energy to focus on the live music. Cohesion and atmosphere creation.

1.2 System Security Backup <br> In major sports events such as the Olympic Games, the stability and reliability of the system is to be placed first. This requires the audio system to meet the needs of the field use, but also to develop emergency backup solutions for key links. As mentioned above, the sub-control mixer on the site has access to the multi-channel audio source required for the game. But how do you take emergency measures in the event of a sudden failure of the sub-control console, each audio source or audio line? A better solution is to make the same audio source, broadcast microphone and material backup on the main console of the sound control room. It is best to additionally equip the sub-station with a wireless microphone and input the microphone receiver signal to the console, provided that the microphone frequency coverage dead point and battery usage are carefully detected and prepared before the game. When any part of the audio equipment in the field fails, the audio control system of the main control room synchronizes to follow up. Even if the sub-control console fails, the wireless microphone can still broadcast the sound without affecting the on-site system maintenance.

2. Grasping the race process <br> Speaking of the race process, it can be understood as the main line of the entire sports show. Every operator must start from the perspective of system engineering and develop a complete set of operational procedures for the preparation and implementation of pre-match, match-time and post-match. Each post must clearly know this. Time period or the content and precautions of the work in this competition. If the audience enters the stage before the start of the game, the audio staff can play some warm music, let the audience slowly integrate into the atmosphere of the game. The broadcasters can intersperse the match schedule, the contestant's information, the venue's precautions and the event hotspots. It can not only enhance the audience's interest in watching games, but also popularize relevant sports knowledge. The event and related information can be presented to the audience through the large screen of the stadium, so that the audience can understand the situation more intuitively. The grasp of the game process is also to let the staff of each position coordinate, remind each other and supervise each other, so that all the staff members can make the content correct and smooth from every time before the game to the time after the game.


In each sports exhibition, while making full use of the original sound system in the stadium, it is targeted to improve or expand according to the characteristics of the sports display. In the implementation, the following important links need to be arranged reasonably.

1.1 Architecture of Audio System <br> The general sports exhibition activities are composed of music control, live broadcast, video control, game information collection and transmission, and other technical personnel and coordination leaders to form a relatively independent team. The implementation of sports single-item display teams often needs to be collected in dedicated work rooms or on-site designated work areas due to actual work needs, in order to facilitate good communication and coordination between each other. This makes it possible for technicians to have unequal distances from the stadium's audio control room, thus affecting operation.

The most feasible solution is to lay a two-way transmission audio cable in the sound control room and the operation site, and add an independent sub-control mixer, so that the sound control personnel can cooperate with the live broadcast, video display and event information release in real time. Audio switching control. Each signal source required for the event can be connected to it (such as CD, MD, MP3, PC, DJMIXER, MIC), and the display of each channel level meter is adjusted to about 0dB, and the maximum output of the main output does not exceed + When 3dB, the main output is connected to the input channel of the main control console of the sound control room via the audio cable, and the input and output channel levels can be adjusted to the same state. The purpose is to ensure that the main and auxiliary consoles have the standard of no distortion. Large dynamic signal level output.

Next, the AUX output of the main control console of the sound control room is connected to the direct control console. According to this method, the audio signal of the large-screen control room and the sound control room of the stadium can be connected, so that an internal monitoring intercom system between multiple points can be formed. In the busy communication time, the telephone and the intercom are often busy, and a well-equipped internal monitoring intercom system can be used to improve the coordination and operational reliability of each working point.

If the field conditions permit, the sub-control console can use a small digital mixer, its channel automatic gain control (AGC), various dynamic processing (GATE\DUCK\COMP\EXP), graphic and parametric equalization (GEQ\PEQ). The effector (EFF) is very suitable for sound reinforcement in the field. In the early stage, each channel and output parameter settings are edited according to the requirements of use, and the save and corresponding scenes are named. After the system is connected, the system can be called directly. This way not only can obtain high-quality sound reinforcement signal, but also improve the safety and stability of the whole system, and greatly reduce the on-site tuning pressure and workload, so that the sound control personnel have enough time and energy to focus on the live music. Cohesion and atmosphere creation.

1.2 System Security Backup <br> In major sports events such as the Olympic Games, the stability and reliability of the system is to be placed first. This requires the audio system to meet the needs of the field use, but also to develop emergency backup solutions for key links. As mentioned above, the sub-control mixer on the site has access to the multi-channel audio source required for the game. But how do you take emergency measures in the event of a sudden failure of the sub-control console, each audio source or audio line? A better solution is to make the same audio source, broadcast microphone and material backup on the main console of the sound control room. It is best to additionally equip the sub-station with a wireless microphone and input the microphone receiver signal to the console, provided that the microphone frequency coverage dead point and battery usage are carefully detected and prepared before the game. When any part of the audio equipment in the field fails, the audio control system of the main control room synchronizes to follow up. Even if the sub-control console fails, the wireless microphone can still broadcast the sound without affecting the on-site system maintenance.

2. Grasping the race process <br> Speaking of the race process, it can be understood as the main line of the entire sports show. Every operator must start from the perspective of system engineering and develop a complete set of operational procedures for the preparation and implementation of pre-match, match-time and post-match. Each post must clearly know this. Time period or the content and precautions of the work in this competition. If the audience enters the stage before the start of the game, the audio staff can play some warm music, let the audience slowly integrate into the atmosphere of the game. The broadcasters can intersperse the match schedule, the contestant's information, the venue's precautions and the event hotspots. It can not only enhance the audience's interest in watching games, but also popularize relevant sports knowledge. The event and related information can be presented to the audience through the large screen of the stadium, so that the audience can understand the situation more intuitively. The grasp of the game process is also to let the staff of each position coordinate, remind each other and supervise each other, so that all the staff members can make the content correct and smooth from every time before the game to the time after the game.


In each sports exhibition, while making full use of the original sound system in the stadium, it is targeted to improve or expand according to the characteristics of the sports display. In the implementation, the following important links need to be arranged reasonably.

1.1 Architecture of Audio System <br> The general sports exhibition activities are composed of music control, live broadcast, video control, game information collection and transmission, and other technical personnel and coordination leaders to form a relatively independent team. The implementation of sports single-item display teams often needs to be collected in dedicated work rooms or on-site designated work areas due to actual work needs, in order to facilitate good communication and coordination between each other. This makes it possible for technicians to have unequal distances from the stadium's audio control room, thus affecting operation.

The most feasible solution is to lay a two-way transmission audio cable in the sound control room and the operation site, and add an independent sub-control mixer, so that the sound control personnel can cooperate with the live broadcast, video display and event information release in real time. Audio switching control. Each signal source required for the event can be connected to it (such as CD, MD, MP3, PC, DJMIXER, MIC), and the display of each channel level meter is adjusted to about 0dB, and the maximum output of the main output does not exceed + When 3dB, the main output is connected to the input channel of the main control console of the sound control room via the audio cable, and the input and output channel levels can be adjusted to the same state. The purpose is to ensure that the main and auxiliary consoles have the standard of no distortion. Large dynamic signal level output.

Next, the AUX output of the main control console of the sound control room is connected to the direct control console. According to this method, the audio signal of the large-screen control room and the sound control room of the stadium can be connected, so that an internal monitoring intercom system between multiple points can be formed. In the busy communication time, the telephone and the intercom are often busy, and a well-equipped internal monitoring intercom system can be used to improve the coordination and operational reliability of each working point.

If the field conditions permit, the sub-control console can use a small digital mixer, its channel automatic gain control (AGC), various dynamic processing (GATE\DUCK\COMP\EXP), graphic and parametric equalization (GEQ\PEQ). The effector (EFF) is very suitable for sound reinforcement in the field. In the early stage, each channel and output parameter settings are edited according to the requirements of use, and the save and corresponding scenes are named. After the system is connected, the system can be called directly. This way not only can obtain high-quality sound reinforcement signal, but also improve the safety and stability of the whole system, and greatly reduce the on-site tuning pressure and workload, so that the sound control personnel have enough time and energy to focus on the live music. Cohesion and atmosphere creation.

1.2 System Security Backup <br> In major sports events such as the Olympic Games, the stability and reliability of the system is to be placed first. This requires the audio system to meet the needs of the field use, but also to develop emergency backup solutions for key links. As mentioned above, the sub-control mixer on the site has access to the multi-channel audio source required for the game. But how do you take emergency measures in the event of a sudden failure of the sub-control console, each audio source or audio line? A better solution is to make the same audio source, broadcast microphone and material backup on the main console of the sound control room. It is best to additionally equip the sub-station with a wireless microphone and input the microphone receiver signal to the console, provided that the microphone frequency coverage dead point and battery usage are carefully detected and prepared before the game. When any part of the audio equipment in the field fails, the audio control system of the main control room synchronizes to follow up. Even if the sub-control console fails, the wireless microphone can still broadcast the sound without affecting the on-site system maintenance.

2. Grasping the race process <br> Speaking of the race process, it can be understood as the main line of the entire sports show. Every operator must start from the perspective of system engineering and develop a complete set of operational procedures for the preparation and implementation of pre-match, match-time and post-match. Each post must clearly know this. Time period or the content and precautions of the work in this competition. If the audience enters the stage before the start of the game, the audio staff can play some warm music, let the audience slowly integrate into the atmosphere of the game. The broadcasters can intersperse the match schedule, the contestant's information, the venue's precautions and the event hotspots. It can not only enhance the audience's interest in watching games, but also popularize relevant sports knowledge. The event and related information can be presented to the audience through the large screen of the stadium, so that the audience can understand the situation more intuitively. The grasp of the game process is also to let the staff of each position coordinate, remind each other and supervise each other, so that all the staff members can make the content correct and smooth from every time before the game to the time after the game.


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