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VOKON Audio-Visual System Solution for Smart Gymnasium
Solutions

VOKON Audio-Visual System Solution for Smart Gymnasium

1. Excessively Long Reverberation Time
Problem Description:
This is the most common acoustic issue in gymnasiums. After a sound is produced, it repeatedly reflects off various hard surfaces instead of being absorbed, causing the sound to have a prolonged “tail” that lingers for an extended period of time.
2. Echo
Problem Description:
An echo occurs when sound reflects off large, distant hard surfaces (such as the opposite wall or the rear wall of the stands), and the delay is long enough (typically more than 50 milliseconds) for the human ear to clearly distinguish the reflected sound from the original sound, resulting in the perception of an “echo.”
3. Flutter Echo
Problem Description:
This is a special type of echo phenomenon that usually occurs between two parallel, hard, and smooth surfaces (such as side walls). Sound rapidly bounces back and forth between the two surfaces like a ping-pong ball, producing a series of rapid, distinct echoes that create a “buzzing” or “fluttering” sound.

4. Stage and Lighting Requirements of the Gymnasium
The on-site stage in the gymnasium is relatively large. When the gymnasium is used for major school events or large gatherings, professional stage lighting is required to support performances. The lighting must evenly cover the entire stage; otherwise, the following issues may occur:
5. Insufficient or Uneven Brightness
“Not lit” or “not bright enough”:
Insufficient fixture power, an inadequate number of luminaires, or unreasonable installation positions (height and angle) may result in insufficient brightness in the center, edges, or specific performance areas of the stage (such as the podium or performer pathways).
6. Severe Shadow Issues
“Actor shadows”:
When the key light source is singular (usually only from the front of the stage) and positioned at a high angle, performers or objects may cast heavy and unattractive shadows on the stage floor and background, especially under the nose and eye sockets.
7. Challenges in Vertical (Façade) Lighting
Uneven illumination of backdrops and curtains:
Providing uniform vertical illumination for tall backdrops or curtains is highly challenging. Common problems include a brighter top with a darker bottom, a brighter center with darker sides, or visible light streaks.

This is the most common acoustic issue in gymnasiumsThis is the most common acoustic issue in gymnasiums

Sound Reinforcement System Design

Considering the overall size of the gymnasium, the sound reinforcement system is configured with two sets of 4+1 line array speaker systems, each consisting of two 15-inch subwoofers paired with eight 10-inch full-range speakers. These systems are suspended on both sides in front of the stage to cover the main audience seating area in the center of the gymnasium.
Due to the large stage area, four 15-inch full-range monitor speakers are installed to provide on-stage sound coverage for speeches and performances. Performers and speakers can clearly hear the reproduced sound through these monitor speakers.
To meet the requirements of gatherings and performances, two dual 18-inch subwoofers are additionally configured to enhance low-frequency performance. With these subwoofers, comprehensive and powerful low-frequency coverage throughout the entire gymnasium is achieved.
Meanwhile, ten Bose Wave constant-directivity active adjustable speakers are installed on the walls on both sides of the spectator stands as supplementary sound reinforcement for the central area of the venue. The coverage direction of these speakers can be adjusted via dedicated professional software, enabling full-area sound coverage with no dead zones.

This is the most common acoustic issue in gymnasiums

Designed in accordance with the National Sports Venue Sound Reinforcement System Standard (GB/T 28049-2011), VOKON conducted acoustic simulations of the gymnasium using professional EASE Focus software. A customized sound reinforcement solution was developed based on the venue’s dimensions.
Simulation results show that the average sound pressure level in this project can exceed the national Class I hall sound reinforcement standard of 103 dB, fully meeting the requirements for daily meetings, performances, and events in the gymnasium.

This is the most common acoustic issue in gymnasiums

Lighting Arrangement of the Gymnasium

Based on the size of the gymnasium stage, this stage lighting design includes five top lights and one front light, covering the stage with the following fixtures:
Imaging Light:
Provides uniform, clear, and three-dimensional frontal illumination for performers and speakers on stage (especially facial lighting), preventing faces from appearing dark or underexposed in photographs.
Floodlight:
Offers multiple color options for the stage and is mainly used to create different color atmospheres and visual effects. The overall stage color can be adjusted according to specific scenes.
Conference Panel Light:
Primarily used for conference lighting and supplementary illumination, ensuring sufficient brightness on stage during meetings, photography, or video recording.
Moving Head Lights:
Mainly used during performances and events to generate dynamic beams and patterns. When combined with PAR lights, they can create rich and impressive lighting effects.