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Fig. 5 | EURASIP Journal on Audio, Speech, and Music Processing

Fig. 5

From: Multichannel speaker interference reduction using frequency domain adaptive filtering

Fig. 5

MAEC approach in the meeting scenario for speaker m = 1. Thereby, the box denotes again the buffering of the previous KR samples, while shows the elimination of KR samples w.r.t. the OLS constraint. Additionally, depicts the replacement of KR samples by zeros. The RIRs H1,2(,k) and H1,3(,k) of interferer signals \(S^{\prime }_{2}(\ell,k)\) and \(S^{\prime }_{3}(\ell,k)\) are estimated (\(\hat {H}_{1,2}(\ell,k), \hat {H}_{1,3}(\ell,k)\)). Afterwards, microphone signals Y2(,k) and Y3(,k) are multiplied with \(\hat {H}_{1,2}(\ell,k)\) and \(\hat {H}_{1,3}(\ell,k)\), respectively, and are then subtracted from the microphone signal Y1(,k), resulting in \(\hat {S}_{1}(\ell,k)\). By means of the error signal E1(,k), the estimation of the RIRs is adapted. To obtain \(\hat {S}_{2}(\ell,k)\) and \(\hat {S}_{3}(\ell,k)\), the inputs are changed accordingly

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