New (stage) parameter for conductor’s acoustics? - part 2: further investigation on LQ7-40

In the previous paper ‘New (stage) parameter for conductor’s acoustics?’ a new parameter (LQ7-40) has been defined. The research with respect to this parameter was presented at ICA2007 in Madrid and at Acoustics'08 in Paris. As elucidated, the objective measurement results for LQ7-40 seem to correspond with the subjective perception of the musicians and the conductor, for the two measured stages, and provide information about the ‘transversely support over the stage’ as well. However, the amount of measured situations was limited. As the parameter LQ7-40 seems to be very promising, the validity and applicability of this parameter have been further investigated. Therefore measurements have been carried out on stages of several Dutch concert halls. Additionally the experiences of the orchestra and the conductor have been determined through a questionnaire. In this paper the results of this investigation are presented and the usefulness of LQ7-40 for the design and control of stage acoustics in concert halls is elucidated.