The challenge was set at Yingyuan School's new auditorium project, featuring a small stage within. With an effective volume of approximately 5910m3, a total effective area of 2700m2, and a height of 10.5m, the venue was designed to accommodate 1004 seats and serve as a multi-functional space for conferences and artistic performances.
To ensure the seamless functionality of the auditorium, the acoustic environment demanded language clarity meeting standards and delivering an exceptional listening experience. The acoustic goals extended beyond controlling reverberation time to eliminating flaws like vibrational echoes, ensuring clear speech and an even sound field throughout the auditorium.
Considering the volume of 5200m³ and a seating capacity of 5.18m³ per seat, optimal mid-frequency reverberation time for multi-purpose auditoriums was targeted at approximately 1.1 seconds (T60=1.1±0.1 seconds at f=500∽1KHz).
Acoustic analysis revealed challenges in the auditorium's side walls, positioned 15m from the stage sound source. The flat wall surface resulted in incomplete sound reflection, impacting tonal richness. To address this, adjustments were made to the wall-mounted lighting strips, introducing a relief pattern to enhance sound reflection, with a 100mm protrusion between each strip.
Beneath the balcony seating, modifications were made to the ceiling to create a sloping design, ensuring better sound reflection for the rear audience. However, the last four rows required additional consideration for electronic sound reinforcement.
With these adjustments to the wall and ceiling structures, the overall sound particle distribution became uniform, showcasing a noticeable diffusion effect. The final acoustic treatment achieved the targeted mid-frequency reverberation time of 1.1 seconds, ensuring an immersive and acoustically optimized environment for conferences and artistic performances at Yingyuan School's auditorium.
