ESTIMATION OF THE IDEAL BINARY MASK USING DIRECTIONAL SYSTEMS
Jesper Bunsow Boldt, Ulrik Kjems, Michael Syskind Pedersen, Thomas Lunner, DeLiang Wang · 2010
The ideal binary mask is often seen as a goal for time-frequency masking algorithms trying to increase speech intelligibility, but the required availability of the unmixed signals makes it difficult to calculate the ideal binary mask in any real-life applications. In this paper we derive the theory and the requirements to enable calculations of the ideal binary mask using a directional system without the availability of the unmixed signals. The proposed method has a low complexity and is verified using computer simulation in both ideal and non-ideal setups showing promising results. Index Terms — Time-Frequency Masking, Directional systems, Ideal Binary Mask, Speech Intelligibility, Sound separation