Articles

Analysis and Synthesis of Pseudo-Periodic -Like Noise by Means of Wavelets with Applications to Digital Audio

Voiced musical sounds have nonzero energy in sidebands of the frequency partials. Our work is based on the assumption, often experimentally verified, that the energy distribution of the sidebands is shaped as ...

Authors: Pietro Polotti and Gianpaolo Evangelista

Multi-Channel Sub-Band Speech Recognition

Two distinct fields of research into robust speech recognition are the use of microphone arrays for signal enhancement and the use of independent frequency sub-band models for robust recognition. In this artic...

Authors: Iain A. McCowan and Sridha Sridharan

Generalization of a 3-D Acoustic Resonator Model for the Simulation of Spherical Enclosures

A rectangular enclosure has such an even distribution of resonances that it can be accurately and efficiently modelled using a feedback delay network. Conversely, a nonrectangular shape such as a sphere has a ...

Authors: Davide Rocchesso and Pierre Dutilleux

Denoising Using Blind Source Separation for Pyroelectric Sensors

This paper deals with a process of denoising based on a Blind Source Separation (BSS) method. This technique is inserted in an experimental device of nondestructive testing. Its excitation is a laser beam and ...

Authors: Regis Huez, Danielle Nuzillard and Alain Billat

Radial Basis Function Networks for Conversion of Sound Spectra

In many advanced signal processing tasks, such as pitch shifting, voice conversion or sound synthesis, accurate spectral processing is required. Here, the use of Radial Basis Function Networks (RBFN) is propos...

Authors: Carlo Drioli

Editorial

Authors: Kenneth E. Barner, Gonzalo R. Arce, Giovanni L. Sicuranza and Ilya Shmulevich

Audio Effects Based on Biorthogonal Time-Varying Frequency Warping

We illustrate the mathematical background and musical use of a class of audio effects based on frequency warping. These effects alter the frequency content of a signal via spectral mapping. They can be impleme...

Authors: Gianpaolo Evangelista and Sergio Cavaliere