A microphone array devoted to multimedia workstations is presented. This array, which was designed according to basic beam-forming principles, is made of subarrays, each characterized by a specific intersensor spacing. It is shown that accurate control of the directivity can be achieved over a given range of frequencies by combining these subarrays in a proper way. The measurement of its acoustic behavior and its use in real multimedia applications have shown that in spite of its low cost, this array yields a great improvement in speech quality when compared to a single microphone.

Authors: Mahieux, Yannick; Le Tourneur, Grégoire; Saliou, Alain
Affiliation: Centre National d'Etudes des Tdldcommunications, Lannion Cedex, France
JAES Volume 44 Issue 5 pp. 365-372; May 1996
Publication Date: May 1, 1996

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