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Shouting affects temporal properties of the speech amplitude envelope
Kostis Dimos1, Lei He1, Volker Dellwo1
1Department of Computational Linguistics, University of Zurich, Zurich, Switzerlandkostis.dimos@uzh.ch, lei.he@uzh.ch, volker.dellwo@uzh.ch.
JASA Express Letters
|January 3, 2024
Summary
Shouting significantly alters speech amplitude envelope (ENV) temporal properties. These changes, including steeper ascent and delayed peaks, may help identify shouted speech, aiding communication for hearing aid users.
Area of Science:
- Acoustics
- Speech Science
- Psychoacoustics
Background:
- Distinguishing shouted from normal speech is vital for effective communication.
- Acoustic cues in speech, such as the amplitude envelope (ENV), are critical for speech perception.
Purpose of the Study:
- To investigate the impact of shouting on the temporal characteristics of the amplitude envelope (ENV) in speech.
- To identify acoustic features of shouted speech that could aid in its automatic detection.
Main Methods:
- 18 Swiss German speakers produced 720 sentences in both normal and shouted modes (≥80 dB SPL at 1m).
- Temporal properties of the amplitude envelope (ENV) were analyzed using generalized additive models.
Main Results:
- Shouting significantly altered the temporal properties of the amplitude envelope (ENV).
- Key alterations included a steeper ascent, a delayed peak, and extended high-level portions of the ENV.
- These temporal modifications provide potential acoustic cues for identifying shouted speech.
Conclusions:
- The temporal characteristics of the amplitude envelope (ENV) are significantly modified during shouting.
- These findings offer valuable cues for automatic detection of shouted speech.
- This research has implications for speech processing systems, especially for individuals with hearing impairments like cochlear implant users, where fine-structure cues may be limited.
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