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Three types of ecological events (crushing, walking and running) have been considered. Their acoustic properties have been mod-eled following the physics-based approach. Starting from an existing physically-based impact model, we superimposed to it the dynamic and temporal stochastic characteristics governing crushing events. The resulting model was(More)
This paper reviews the state of the art in the display and perception of walking generated sounds and tactile vibrations, and their current and potential future uses in interactive systems. As non-visual information sources that are closely linked to human activities in diverse environments, such signals are capable of communicating about the spaces we(More)
A shoe-based interface is presented, which enables users to play percussive virtual instruments by tapping their feet. The wearable interface consists of a pair of sandals equipped with four force sensors and four actuators affording audio-tactile feedback. The sensors provide data via wireless transmission to a host computer, where they are processed and(More)
The main goal of the work here described is the DSP implementation of innovative algorithms for real-time voice transformation. This work represents part of the procedure (developed in the framework of the RACINE-S European Project) conceived for reconstructing voice and dialogue in audio tracks of old and highly damaged film movies.
Interactive audio processing systems sometimes include user-controlled digital filters, whose response is obtained by interpolating between different transfer functions. Audible artifacts produced by these filters are caused by migration across the unit circle of the zeros in their transfer function, depending on the interpolation parameter values. There(More)
—Waveguide meshes are efficient and versatile models of wave propagation along a multidimensional ideal medium. The choice of the mesh geometry affects both the computational cost and the accuracy of simulations. In this paper, we focus on two-dimensional (2-D) geometries and use multidimensional sampling theory to compare the square, triangular, and(More)