Microphone interference reduction in live sound
Alice Clifford, Joshua D. Reiss · 2011
When multiple microphones are used to reproduce multiple sources microphone interference, or bleed, can occur due to each micro-phone picking up more than one source. This paper proposes com-bining the crosstalk resistant adaptive noise canceller (CTRANC) algorithm with centred adaptive filters using an estimation of delay to suppress the interference, while making little change to the tar-get signal. The proposed method is compared with similar meth-ods in both the anechoic and echoic cases. The method is shown to outperform the other methods in the anechoic case while in the echoic case it is shown to perform less well at reducing the level of the interference but still introduces the least artefacts. Extension to the proposed method to the N source and microphone case is also discussed. 1.