[LAU] orchestra mixing, reverb, and spatialization

Hello, I am helping a friend to mix an orchestral piece using Ardour. To add depth to the different instruments, we have created three buses, each with a TAP Reverberator with the same settings (Hall HD type) excepted the dry/wet ratio. The different instruments are panned according to a common orchestral layout. This works, but I feel that both the depth and the stereo positioning could be improved. Indeed, the Hall HD reverb settings has fixed early reflections patterns while the different instruments should have different ones according to their physical positions. I was wondering if any of you knows about some ways to improve this. As a solution, I am thinking about writing a software to compute the early reflections patterns of an instrument given its 2D position in the orchestra. In this case, do you have suggestions of how many early reflections I should use (left/right walls + back for left/right walls?). Does the allpass filter settings depend on the position of the instrument/walls? My feeling is that the reverb GUI should include stereo panning as well in order to launch rays from the correct 2D positions. What do you think about such idea? Would someone be interested to contribute to such project? Thank you, kind regards, Stéphane -- http://stephane.magnenat.net