A perceptual investigation of polytonality

Area of Science:

• Music Perception
• Psychoacoustics
• Cognitive Science

Background:

• Polytonal music, characterized by simultaneous use of multiple keys, presents unique challenges for tonal perception.
• Understanding how listeners process complex tonal structures is crucial for music cognition research.

Purpose of the Study:

• To investigate listener sensitivity to tonal structure in polytonal music.
• To determine how different keys are perceived and weighted within polytonal excerpts.
• To examine the influence of register and context on polytonal music perception.

Main Methods:

• Four experiments were conducted using musical excerpts with conflicting key suggestions between upper and lower staves.
• Listeners rated the goodness of fit for probe tones following musical stimuli.
• Analysis focused on listener sensitivity to individual keys and their perceived importance.

Main Results:

• Listeners demonstrated sensitivity to multiple keys within polytonal music.
• The perceived importance of each key influenced listener ratings.
• Register did not dictate key perception; the upper stave's key often predominated.
• Individual staves reliably conveyed key structure independently.

Conclusions:

• Listener perception of polytonal music is influenced by key predominance and perceived importance.
• Contextual factors, such as the upper stave's key, can override other tonal information.
• Further research is needed to fully understand the interplay of long-term knowledge and immediate context in polytonal music perception.