Examples of target signal and noise conditions used in the current study. The waveform (top) and spectrogram (bottom) of the signal and the noise conditions (1-talker babble, 2-talker babble, 8-talker babble, and speech-shaped noise (SSN). In 1-talker babble condition, individual words by the competing talker are discernible, providing informational interference. In contrast, in SSN, individual lexical items are not discernible, but the masking is more continuous, and allows for less signal ‘glimpsing’.