TABLE II.

Key variables.

Variable	Meaning
ks, kd	Number of basis elements in the speech and noise bases
td, tn	Number of spectrogram frames of the noise-only and noisy speech signals
Vs, Vd, V	Complex-valued spectrograms of speech, noise-only, and noisy speech signals
Ws, Wd, Wn	Speech basis, noise basis learned on noise-only signal, and noise basis learned on noisy speech
Hs, Hd, Hn	Speech time-activation matrix, noise time-activation matrix learned on noise-only signal, and noise time-activation matrix learned on noisy speech
Ps, Pd, Pn	Speech phase matrix, noise phase matrix learned on noise-only signal, and noise phase matrix learned on noisy speech