Circuit Theory and Signal Processing

Active Noise Cancellation for Comfort Improvment

Active Noise Control (ANC) is a technique that permits the reducing of undesired sound by introducing an interference signal. This can be obtained through a microphone and a loudspeaker: the former picks up the noise at the listener position while the latter reproduce the interference signal, a sound that is out of phase with the unwanted noise. In this way, at the microphone position, the interference is added to the noise, thus reducing the perceptible noise level. ANC has been applied to several noisy environment, e.g. automotive, aircraft, etc. Since the ANC presents better results at the low frequency range, it has been recently applied with success to yacht bedrooms in order to permit a more comfortable sleep by reducing the annoying effect due to engine and power generators noises. The main topics of our research activities are:

  • Environment acoustics analysis
  • Feedback multichannel ANC for automotive, yacht and domestic environment
  • Feedforward multichannel ANC for automotive, yacht and domestic environment
LaboratoryAudio LAB and Semi-Anechoic Chamber
Contact PersonStefania Cecchi


  • Leaff Engineering
  • Videoworks

ProjectsPrivate funding of PhD and PostDoc Research Fellowships

PeopleStefania Cecchi, Alessandro Terenzi, Stefano Nobili