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On possible cues in profile analysis: identification of the incremented component
1Department of Cognitive Psychology, Carl von Ossietzky University of Oldenburg, Germany. hedwig.gockel@mrcapu.cam.ac.uk
The Journal of the Acoustical Society of America
|January 24, 1998
Summary
Listeners can identify a signal frequency within a complex sound, even when distinguishing between similar sound patterns. This suggests pitch perception plays a role in auditory profile analysis.
Area of Science:
- Auditory Perception
- Psychoacoustics
- Signal Processing
Background:
- Multitone complexes are fundamental in auditory perception research.
- Understanding how listeners detect changes within complex auditory scenes is crucial for fields like speech and music processing.
Purpose of the Study:
- To assess the ability to identify the frequency of an incremented component within an 11-tone complex.
- To compare frequency identification with discrimination between standard and modified sound complexes.
Main Methods:
- Three conditions were used: Standard-absent, Standard-present, and a discrimination task.
- Adaptive procedures estimated thresholds for level increment detection.
- Stimuli consisted of 11-tone complexes with controlled component levels and phases.
Main Results:
- Auditory frequency identification ability was comparable to discrimination ability between sound complexes.
- Thresholds for increment detection were successfully estimated across different signal frequencies.
- Performance was robust despite variations in overall level and signal position.
Conclusions:
- The ability to identify a specific frequency within a complex sound is a key aspect of auditory processing.
- Increased pitch strength of a modified component may serve as a cue in auditory profile analysis.
- These findings contribute to understanding the mechanisms of complex sound perception.