Loudness constancy experiments compare speech and noise across headphone, loudspeaker, and virtual presentation

Evidence

There were six conditions, comprised of two stimulus types (speech/noise) and three presentation techniques. The speech stimuli were IEEE sentences (Rothauser et al. 1969 ) and the noise stimuli were unmodulated noises filtered to have the same long-term excitation pattern (Moore and Glasberg 1987 ) as the speech. These two stimulus types were presented (1) dry over headphones, (2) from a loudspeaker to the listeners’ right or (3) virtually through lightweight open-backed headphones (Sennheiser HD414). Monaural presentation was achieved in (1) and (3) by deactivating the left earphone for the second interval of each trial and in (2) by asking the listener to block their left ear with a finger for the second interval of each trial. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1532

Categorization

• DEFINE: Defines the experimental paradigm: monaural reference vs binaural test with matched long-term excitation for speech and noise.