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Real-Time Proxy-Control of Re-Parameterized Peripheral Signals using a Close-Loop Interface
Published on: May 8, 2021
The role of peripheral resolvability in pitch-sequence processing.
Marion Cousineau1, Laurent Demany, Daniel Pressnitzer
1Laboratoire Psychologie de la Perception, CNRS and Université Paris Descartes, 45 rue des Saints-Pères, F-75006 Paris, France. marion.cousineau@ens.fr
The Journal of the Acoustical Society of America
|November 30, 2010
Summary
Peripheral resolvability, not just harmonic number, is crucial for accurate pitch sequence processing. Dichotic presentation, which enhances resolvability, improved performance, confirming its necessity and sufficiency.
Area of Science:
- Auditory Neuroscience
- Psychoacoustics
- Signal Processing
Background:
- Previous research indicated that pitch perception is influenced by harmonic resolvability.
- Tones with resolved harmonics facilitate more accurate same/different judgments compared to unresolved harmonics.
Purpose of the Study:
- To investigate the role of peripheral resolvability in pitch-sequence processing.
- To determine if peripheral resolvability is necessary and sufficient for efficient pitch-sequence perception.
Main Methods:
- Comparing pitch-sequence judgments for tones with varying peripheral resolvability.
- Presenting tones diotically (both ears) versus dichotically (different harmonics to each ear).
- Manipulating the number of harmonics per cochlear filter.
Main Results:
- Performance on pitch-sequence tasks was significantly better with dichotic presentations compared to diotic.
- Dichotic presentation effectively halved the number of harmonics per cochlear filter, enhancing peripheral resolvability.
Conclusions:
- Peripheral resolvability, defined by harmonics per cochlear filter, is essential for efficient pitch-sequence processing.
- Peripheral resolvability is sufficient for efficient pitch-sequence processing, independent of harmonic number alone.
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