Spatialized Synthesis of Noisy Environmental Sounds

In this paper, an overview of the stochastic modeling for analysis/synthesis of noisy sounds is presented. In particular, we focused on the time-frequency domain synthesis based on the inverse fast Fourier transform (IFFT) algorithm from which we proposed the design of a spatialized synthesizer. The originality of this synthesizer remains in its one-stage architecture that efficiently combines the synthesis with 3D audio techniques at the same level of sound generation. This architecture also allowed including a control of the source width rendering to reproduce naturally diffused environments. The proposed approach led to perceptually realistic 3D immersive auditory scenes. Applications of this synthesizer are here presented in the case of noisy environmental sounds such as air swishing, sea wave or wind sound.We finally discuss the limitations but also the possibilities offered by the synthesizer to achieve sound transformations based on the analysis of recorded sounds.