Geintra

Departamento de electronica Universidad de Alcala

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    Novel GCC-PHAT Model in Diffuse Sound Field for Microphone Array Pairwise Distance Based Calibration

    TitleNovel GCC-PHAT Model in Diffuse Sound Field for Microphone Array Pairwise Distance Based Calibration
    Publication TypeConference Paper
    Año de publicación2015
    AutoresVelasco, JF, Taghizadeh, MJ, Asaei, A, Bourlard, H, Martin-Arguedas, CJ, Macias-Guarasa, J, Pizarro, D
    Idioma de publicaciónEnglish
    Conference NameIEEE 40th International Conference on Acoustics, Speech and Signal Processing (ICASSP)
    Páginas2669-2673
    Fecha de publicación04/2015
    Numero ISBN978-1-4673-6997-8
    Palabras claveDiffuse sound field, Generalized cross correlation, Microphone array calibration, Pairwise distance estimation, Phase transform
    Abstract

    We propose a novel formulation of the generalized cross correlation with phase transform (GCC-PHAT) for a pair of microphones in diffuse sound field. This formulation elucidates the links between the microphone distances and the GCC-PHAT output. Hence, it leads to a new model that enables estimation of the pairwise distances by optimizing over the distances best matching the GCC-PHAT observations. Furthermore, the relation of this model to the coherence function is elaborated along with the dependency on the signal bandwidth. The experiments conducted on real data recordings demonstrate the theories and support the effectiveness of the proposed method.