Balconies and Overhangs

A balcony brings the audience closer to the musicians and improves sight lines, while dividing the room vertically into separate spaces. Under a deep balcony there is less reverberant energy and the listener has less sense of envelopment and a lower reverberation time. As a consequence under-balcony spaces should be shallow and the front openings high. Figure 19.3 gives recommendations in terms of the ratio of the height to depth ratio. Beranek (1962) suggests a D/H ratio of no more than one for concert halls and no more than two for opera. Barron (1993) recommends that there be a direct line of sight between the rearmost listener and overhead reflecting surfaces and that the angle between the listener and these surfaces not be less than 45° in concert halls and 25° in opera houses.

Figure 19.3 Designs for Balcony Overhangs

Figure 19.3 Designs for Balcony Overhangs

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