Subband-based blind signal separationfor noisy speech recognition
Hyung‐Min Park, Ho‐Young Jung, Te-Won Lee, Soo-Young Lee · Electronics Letters · 1999
A method for directly extracting clean speech features from noisy speech is proposed. This process is based on independent component analysis (ICA) and a new feature analysis technique for reducing the computational complexity of the frequency-domain ICA. For noisy speech signals recorded in real environments, this method yielded a considerable performance improvement.