Historical buildings are an architectural form of heritage where unique aesthetic spaces can be adapted to host new functions. This is a case study of a national heritage building in Sofia, Bulgaria, originally built as a private house and atelier for a famous sculptor. The building is currently adapted as a cultural center with a theatrical performance hall, an exhibition/lecture hall and a small music hall. The spaces need acoustic corrections in order to provide adequate performance. Due to aesthetic and historical reasons, sound-absorbing panels should be designed and imported in the space in an appropriate manner. Room acoustic simulation software is used to locate the most effective positions of sound-absorbing panels, to reduce reverberation time and improve speech intelligibility.
