An overview of the design of a computer program that can be input with a desirable acoustic quality in terms of a property within an impulse response, and automatically generate a room geometry that would possess the input desirable acoustic quality has been described. This was achieved through the creation of a ray-tracing model and through utilisation of the Nelder-Mead Simplex Method for function minimisation. To illustrate its operation, solution impulse responses and room geometries possessing an ITDG of 15ms, ignoring first order floor reflections, were presented for a typically sized mono, stereo and 5-channel control room with an RT60 of approximately 0.4 seconds; the validity of the 5-channel room geometry was confirmed using ODEON room acoustic software. The program was shown to successfully converge to solution geometries for each input loudspeaker configuration for a room with 97 surfaces and would indicate that the Acoustic Geometry Sculptor was capable of generating valid geometries worthy of further investigation. However, it should be borne in mind that although the ray-tracing modelling method used within the program is capable of providing an adequate approximation of the impulse response at the listening position for the purpose of generating the error associated with a particular room geometry, it should be seen in the light of its inherent useful frequency range limitations (spectral reflection assumption) and its neglect in the treatment of phase and diffraction at and around surfaces.
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