Acoustical design of Auditorium hall
Acoustical design of Auditorium hall
![Acoustical design of Auditorium hall 2024 Acoustical design of Auditorium hall, good acoustical condition in Hall, Acoustical design, Auditorium hall, Reverberation & sound absorption](http://www.ishwaranand.com/wp-content/uploads/2020/01/122-1024x426.jpg)
General planning principles & factors which are important for the good acoustical condition in Hall
- Site selection & planning
- Dimensions
- Shape
- Seat & seating arrangement
- Treatment of interior surfaces
- Reverberation & sound absorption
Site selection & planning is Auditorium hall
- The problem of noise is an important consideration
in design. - A noise survey of the area should be made.
- The site selected should depend upon its surroundings.
- Sound insulation like plantation should be provided.
- Prudish orientation, place selection into cases where no air conditioning remains provided.
Dimension in the Auditorium hall
- The site should be fixed concerning some audiences required to be seated.
- Also in proportion to the intensity of sound to be generated.
- During music halls, the volume should be large so that sufficient spaces are available for some music to spread in that hall.
- For lecture halls, small volumes are useful.
The shape of the Auditorium hall
- The shape of a hall or auditorium is an important factor.
- The shape of the hall is geometrically arranged in the view of better audibility.
- A fan shape floor plan is preferred.
- The side walls should be arranged to have an angle of not more than 100 degrees with a certain line.
- The distance of the farthest seats from the curtain line should not normally exceed 23 m.
Seat & Seating arrangements in the Auditorium hall
- The seat should be arranged in concentric arcs our circles
- Every angle subtended including horizontal at some front-most observer by the highest object should not exceed 30⁰
- For drama, the distance of the first row is about 3.6m.
- For the cinema, it is 4.5m.
- The width of the seat should be 45cm to 56 cm.
- For the balcony, its projection into the hall should not be more than twice the free height of the opening of the balcony.
![Acoustical design of Auditorium hall 2024 Acoustical design of Auditorium hall, good acoustical condition in Hall, Acoustical design, Auditorium hall, Reverberation & sound absorption](http://www.ishwaranand.com/wp-content/uploads/2023/07/123.jpg)
Treatment of interior surfaces of the Auditorium hall
- Ceilings, sidewalls, and rear walls play an important role in acoustical design.
- The ceiling & wall should provide favourable reflection.
- Each auditorium’s rear walls should be each flat or convex in shape.
Reverberation & sound absorption of the Auditorium hall
- A certain amount of reverberation is desirable, especially for giving richness to the music.
- But too much reverberation is undesirable.
- The optimum time for reverberation in a hall depends upon the purpose for which it is to be used, the audience factor.