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Forensic reference data on articulation rate in German
1Forensic Science Institute, Department of Speaker Identification and Audio Analysis (KT54), Bundeskriminalamt, 65173 Wiesbaden, Germany. Michael.Jessen@bka.bund.de
Science & Justice : Journal of the Forensic Science Society
|October 19, 2007
Summary
Articulation rate (AR) is crucial for forensic voice comparisons. This study analyzed AR in 100 German males, providing population data and revealing differences between read and spontaneous speech for forensic experts.
Area of Science:
- Forensic Linguistics
- Phonetics
- Speaker Recognition
Background:
- Articulation rate (AR) is a key parameter in forensic voice comparisons.
- Multi-speaker studies on AR are currently limited, hindering its application.
- Understanding AR variations is vital for speaker identity assessment.
Purpose of the Study:
- To address the scarcity of multi-speaker AR data.
- To provide population-based histograms of AR for German-speaking males.
- To investigate differences in AR between read and spontaneous speech.
Main Methods:
- Measured articulation rate (AR) in 100 German-speaking male subjects.
- Generated histograms for mean AR and standard deviation of AR.
- Compared AR in read versus spontaneous speech samples.
Main Results:
- Provided population data for mean AR and its standard deviation.
- Found significantly higher mean AR in read speech compared to spontaneous speech.
- Observed a significantly smaller standard deviation of AR in read speech versus spontaneous speech.
Conclusions:
- The study provides essential population data for AR in forensic voice analysis.
- Differences in AR between speech types (read vs. spontaneous) are significant but show individual variation.
- The findings aid forensic experts in interpreting AR evidence for speaker identity.
