We finally settled on a shape that was the proportion of the Concertgebouw with the sloping outside walls, which the acoustician said were crucial to this and later decided they weren't, but now we have them.
Nós finalmente concordamos com o formato que estava a proporção do Concertgebouw com as paredes inclinadas para fora, disse o técnico de acústica eram cruciais para isso e depois decidiram que não eram, mas agora nós as fizemos assim.