Optimization of the acoustic response both for orchestra and for a solo instrument, the exquisitely romantic piano of Chopin, in the case study 'Chopin concert hall'

The Chopin concert hall’s shape takes account of classical forms: starting the design from a shoebox volume it tends to approach a vineyard, as a reinterpretation and synthesis of both ones. The proposed method involves a predictive analysis. Acoustics performance evaluation have been carried out using the room acoustic modeling program, Catt Acoustic. This has been used with two source types with the same sound power: an omni-directional source and a source with realistically-directional characteristics based on measurements from a real grand piano instrument. Objective analyses have been carried out on three acoustic parameters: the Sound Pressure Level (SPL), the Reverberation Time (T30) and the Clarity Index (C80). The proposed designed room shape, materials and the selected stratigraphy of the coatings are the ones for which the differences in SPL, T30 and C80 are negligible when comparing the two source types simulations, moreover the parameters values are optimized.