Comparing dip and constant levels isolates how relative loudness shifts affect syllable perception.

Evidence

The nonsense words were then adjusted to produce the two level conditions illustrated in Fig. 1 : In the “dip” condition (left column), the level of the second syllable was 70, 60, 50 or 40 dB, while the first and third syllables were fixed at 70 dB. In the “constant” condition (right column), all three syllables were set to 70, 60, 50 or 40 dB. — Dijk, Pim van, Physiology, Psychoacoustics and…, 4060