Last update: July 23, 2021

1. General Information

ANC global scheme

The test bench have been designed in order to test new methodologies for adaptive active noise control.
The objective in adaptive active noise control is to strongly attenuate various type of noise with unknown and time varying characteristics.
This include : multiple narow band and tonal noises, limited band noise, broad band noise.
The test bench has been designed such that it can handle both feedback attenuation schemes, feedforward noise compensation schemes (including a microphone for measuring an image of the incoming noise) and combination of fedback-feedforward noise attenuation schemes.

The computer facilities allows a straightforward real-time implementation of Matlab Simulink® schemes designed following an established protocol.

The test bench facililities allow to test 1) performances, 2) robustness and 3) complexity of the various proposed methodologies

The testbed is constituted by a main pipe with though which the noise generated by a loudspeaker propagates. At pipe’s open end, a microphone measures the system’s output (residual noise). Another microphone placed next to the disturbance speaker allow to get (if necessary) an image of the noise. A secondary pipe connected to the main pipe will generate the compensating noise which is generated by a second loudspeaker controlled by the control computer.

Model of the system as well as data for system identification of the system are available and can be downloaded.

A number of noise configurations for testing a methodology are provided.

The bench test can be also used for evaluating robustness and adaptivity with respect to change in the system characteristics.


Interested persons should contact: ioan-dore (dot) landau (at) gipsa-lab (dot) grenoble-inp (dot) fr