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Temporal Loudness Weights Are Frequency Specific
Alexander Fischenich1, Jan Hots2, Jesko Verhey2
1Department of Psychology, Johannes Gutenberg-Universität Mainz, Mainz, Germany.
Frontiers in Psychology
|April 5, 2021
Summary
The beginning of a sound significantly impacts loudness perception. This study reveals that temporal loudness weighting is specific to different frequency bands, even when gaps are introduced.
Area of Science:
- Auditory perception
- Psychoacoustics
- Signal processing
Background:
- The initial part of a sound is crucial for perceived loudness (primacy effect).
- A silent gap within a sound can cause the primacy effect to reappear in the subsequent sound segment.
Purpose of the Study:
- To investigate if temporal loudness weighting operates independently across different frequency bands.
- To determine if the primacy effect, following a silent gap, is frequency-specific.
Main Methods:
- Participants listened to sounds composed of two bandpass noises.
- Four gap conditions were tested: simultaneous gap in both bands, gap in one band only, or no gap.
- Temporal loudness weights were analyzed for each frequency band across conditions.
Main Results:
- A primacy effect was observed at sound onset in all conditions.
- Temporal weights decreased over time for un-gapped bands, irrespective of the other band's condition.
- Gaps in a specific frequency band led to an increased weight at the band's re-onset, independent of the other band.
Conclusions:
- Temporal loudness weighting is frequency-specific.
- The reoccurrence of the primacy effect after a gap is largely independent across frequency bands.
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