Patent ID: 8612187

Claim:
Platform for testing different implementations of a process for positioning a sound object in a three-dimensional sound environment, characterized in that it comprises: Means for selecting only the spatial configurations and the filter synthesis methods that the target audio device can support, taking into account its memory resources and CPU, An interface for selecting the spatial configuration of virtual loudspeakers on the listening sphere, An interface for selecting the method for transformation of FIR-type HRTF filters into IIR-type HRTF filters and the order of the IIR filters to be obtained, and Means for implementing —with different types of sound sources —the process that comprises the following stages: Defining a sound space that comprises N distinct virtual loudspeakers positioned on a listening sphere in the center of which the listener is located, Positioning the sound object at a desired location of the listening sphere by adapting the characteristics of the input signals bound for each virtual loudspeaker, Applying to each of the N input signals a pair of HRTF filters corresponding to the positioning of the virtual loudspeaker for which the input signal is bound for obtaining a stereo sound signal by virtual loudspeaker, and Adding up between them the sound signals from the left and the sound signals from the right between them to obtain a single broadcastable stereo sound signal that corresponds to the contribution of each of the virtual loudspeakers so as to be able to select the configuration and the method for transformation of the HRTF filters that is the most suitable for an audio system with a limited calculation and memory capacity.