Analysis-synthesis of impact sounds by real-time dynamic filtering

  • Authors:
  • M. Aramaki;R. Kronland-Martinet

  • Affiliations:
  • CNRS-Lab. de Mecanique et d'Acoustique, Marseille, France;-

  • Venue:
  • IEEE Transactions on Audio, Speech, and Language Processing
  • Year:
  • 2006

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Abstract

This paper presents a sound synthesis model that reproduces impact sounds by taking into account both the perceptual and the physical aspects of the sound. For that, we used a subtractive method based on dynamic filtering of noisy input signals that simulates the damping of spectral components. The resulting sound contains the perceptual characteristics of an impact on a given material. Further, the addition of very few modal contributions-using additive or banded digital waveguide synthesis-together with a bandpass filtering taking into account the interaction with the excitator, allows realistic impact sounds to be synthesized. The synthesis parameters can be linked to a perceptual notion of material and geometry of the sounding object. To determine the synthesis parameters, we further address the problem of analysis-synthesis aiming at reconstructing a given impact sound. The physical parameters are extracted through a time-scale analysis of natural sounds. Examples are presented for sounds generated by impacting plates made of different materials and a piano soundboard.