Abstract
The size of a choir is based on many factors, including availability of singers, size of the performance hall, economics of practice and performance, and the desired ensemble sound. It is generally assumed that a large choir has a greater dynamic range than a small choir. It is also generally assumed that a choir with well-trained singers can produce a greater dynamic range. A theoretical study is presented here that combines sound pressure level and loudness of homogeneous and non-homogeneous groups of singers to produce an overall sound level profile of a choir. Internal constraints are self-to-other ratio and individual voice range profiles of choir members. Results indicate that the dynamic range of a choir is determined mostly by the dynamic range of individuals with wide ranges, assuming that inhomogeneity is allowed. Choir size makes little difference. Singers with small dynamic ranges have little effect on choir dynamics unless louder voices are selectively turned off in pianissimo passages.
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