First of all, in order to achieve good sound quality in the hall, it is a prerequisite to do a good job of acoustic decoration. Second, it is the role played by sound systems and equipment.
That is to say: the decoration design and construction must carry out strict and scientific "acoustic decoration", and meet the requirements of relevant professional indicators, the hall can guarantee good sound quality. Party A and the decorating party tend to ignore the importance of “acoustic decorationâ€; the decoration is often limited to simple soft bag processing, which is considered to be sufficient. In fact, this is far from the real acoustic decoration. This will inevitably result in poor sound quality in the hall (there will be no more expensive electro-acoustic equipment, and the sound effect will not be good!) The responsibility of the decoration party is not fulfilled, and the electro-acoustic system design and construction workers are often used to carry out the black pot, causing unnecessary disputes.
Fortunately, at present, many parties have fully realized the importance of acoustic decoration, and require the audio engineering contractor to propose corresponding requirements and designs, and require the decoration parties to cooperate with each other to do a good job in the acoustic decoration of various halls.
Architectural Acoustic Indicator Requirements (Acoustic Renovation Requirements):
→A. Background noise: less than or equal to NR35;
→B. Sound insulation and vibration isolation measures: There should be good sound insulation and vibration isolation measures in the hall. The sound insulation vibration isolation index shall be executed according to GB3096-82 “Urban Regional Environmental Noise Standardâ€. The resident culture and education area shall be: 50dBA in the daytime and 40dBA in the nighttime. .
→C. Building acoustic indicators
(1), resonance, echo, tremor echo, room standing wave, sound focusing, sound diffusion:
The doors, windows, ceilings, glass, seats, decorations and other facilities in the halls shall not have resonance phenomenon; there shall be no defects such as echo, vibrating echo, room standing wave and sound focusing in the hall, and the sound field diffusion shall be uniform.
(2) Reverberation time Reverberation time is the primary indicator to be controlled in acoustic decoration. It is the essence of acoustic decoration. The sound quality of the hall is beautiful. This indicator is the decisive factor and the only acoustic parameter that can be measured by scientific instruments. .
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