An interactive auralization method using real-time sound sources

Paper in proceeding, 2012

During recent years, auralization methods have evolved towards using more interactive measures. The use of interactive elements, like navigation in static sound fields, has proven to be very significant in order to better integrate the listener with the simulated soundscape. In this study the possibility of engaging the user by actively contributing to the sound field is explored. Enabling the subject to act as a sound source and allowing communication within the environment, utilizing real-time synthesis of an acoustic environment's response. Auralization allows for a psychoacoustic evaluation of the acoustical space and therefore plays an important part in a wider understanding of different environmental characteristics. With an auralization framework adapting this kind of interaction, experience of the acoustical response is enabled and can thus be used as a tool in the process of subjectively assessing the acoustical space. Real-time convolution software implementing this mode of procedure has been designed. A subjective evaluation has been performed using a listening room equipped with an ambisonics multi-channel reproduction system, and a directional microphone with feedback control. Evaluation results indicate a positive response from the subjects to the added control over the simulated space.