This paper proposes an efficient mechanism for the fusion of two noisy speech signals obtained by an array of two microphones using single-tap time-frequency filters and by taking into account the correct time delay of arrival (TDOA) of the speech source. Speech signals obtained by the microphones are transformed into a set of two complex time-frequency (TF) images. By knowing the correct TDOA, and therefore the associated phase difference between the signals at each frequency, it is possible to non-linearly filter both the real and the imaginary parts of the TF images. This will consist of a TF reward-punish filter that adjusts the amplitude of the TF blocks based upon the variation of their phase-difference with the ideal phase-difference defined by the TDOA. Simulation results show that the proposed technique can achieve a Signal-to-Noise Ratio (SNR) improvement of 15 dB when there, is strong Gaussian noise present (-20 dB initial SNR). When the original SNR is OdB, the simulated improvement is approximately 8 dB. It is also shown that although the proposed technique is a more general case of the adaptive beamformer (where the adaptive beamformer has a specific reward-punish characteristic), other reward-punish characteristics that are proposed in this paper can often surpass the performance of the ideal adaptive beamformer.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Multi-channel time-frequency data fusion


    Beteiligte:
    Aarabi, P. (Autor:in) / Guangji Shi, (Autor:in)


    Erscheinungsdatum :

    01.01.2002


    Format / Umfang :

    728344 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Multi-Channel Time-Frequency Data Fusion

    Aarabi, P. / Shi, G. / International Society of Information Fusion et al. | British Library Conference Proceedings | 2002


    Dual-frequency multi-code unambiguous combined acquisition algorithm based on channel fusion

    Shu, Yi / Hu, Hui / Li, Ming et al. | Emerald Group Publishing | 2025


    Time-multiplexed multi-channel radio-frequency arbitrary waveform generation

    Torres-Company, V. / Metcalf, A. J. / Supradeepa, V. R. et al. | IEEE | 2011


    Multi sensor data fusion for real time aircraft collision

    Harris, C.J. | IET Digital Library Archive | 1996


    Travel Time Prediction of Multi-Source Historical Data Fusion

    Liu, Wen Ting ;Wang, Zhi Jian ;Yan, Qin | Trans Tech Publications | 2011