Investigations of stage acoustics for a symphony orchestra

• Autores: Alf Berntson, Johan Andersson
• Localización: Proceedings of the ISRA 2007 Seville, Vol. 3, 2008 (Oral Session Communications), ISBN 9788469082676
• Idioma: español
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• Resumen

  • This investigation was made in collaboration with a professional symphony orchestra, with the goal of improving the acoustics at their home stage. A pre-study through questionnaires was conducted during a tour. The outcomes were used to design the first stage configurations, evaluated during the early part of a tuning week. Binaural impulse responses were measured for 14 configurations from five positions on stage to five musicians and to a dummy head in the audience. After performing seven pieces of music, all musicians judged the stage acoustics in a questionnaire. The music was recorded binaurally and the A-weighted sound pressure levels were evaluated. The musicians judged the sound level to be much lower in the final configuration. However, the binaurally measured sound pressure levels from the music played show very small differences. The measured sound level is probably mainly determined by the sound from the own instrument and the closest surrounding instruments. The judged level is probably based on the later arrived sound level and the character of the sound. Generally the judgements are highly scattered and the correlations between subjective judgements and standardized parameters like Support, Clarity, EDT, IACC etc is low.