Noise Reduction Method for Multiple Sound Source Signals and Its Application to Two-channel Microphone System
Takaaki Ishibashi, Kana Higuchi, Chiharu Okuma, Kiyoteru Hayama · 2017
This paper proposes a noise reduction method for multiple sound source signals. The proposed method can change the direction of unidirectional pattern and can select multiple directivity pattern. The method can reduce noise even when the number of sound sources is larger than that of observed mixture signals. In addition, a noise reduction system is developed using two-channel microphone arrays. The system can be processed in real-time. By several simulations, it is found that the proposed method can extract the target speech signals from multi speaker's utterance sounds.