The effect of masking due to fluctuating sources on speech intelligibility is a phenomenon difficult to predict. Intelligibility scores vary with the efficiency of the energetic masking while the linguistic content of the message and listenerís cognitive performances add to the general incertitude that peaks for the case of masking speech. The present contribution proposes a signal-based assessment of the energetic masking at the sentence level. A mapping onto the scale of the speech intelligibility index is established for stationary noise. Predictions are quantitatively compared with the results of an intelligibility test for speech-modulated noise. The model is independent of voices similarities and semantic features, two important sources of informational masking.
Bibliographic reference. Ramirez, Juan-Pablo / Ketabdar, Hamed / Raake, Alexander (2010): "Intelligibility predictions for speech against fluctuating masker", In INTERSPEECH-2010, 2486-2489.