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Forensic Phonetics

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on 19 November 2013

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Transcript of Forensic Phonetics

Forensic Phonetics
What do Forensic Phoneticians Do?
Analysis of Transmitted Speech Signals
Speech Enhancement and Decoding
Tape Authentication
Examination of the Communication Acts
Speaker Analysis
Speaker Identification
Signal Analysis
Speech Enhancement
- Increasing Intelligibility
Electronic filtering, noise elimination programs
Speech Decoding
- Analyzing Spectrograms
Sifting through recorded clues to recreate what was said, when it was said, and any other pertinent information
Authenticating Recordings
- Confirming Original Status
Physical examination
Laboratory examination
Content Analysis
Speaker Identification
Aural/perceptual approaches
Earwitness testimony
Perceptual speaker identification
Machine/computer approaches
SAUSI: Semi-Automatic Speaker Identification
Vocal Behaviors
Emotions
External Conditions
Intentional Behaviors
Health States

Conclusion
Forensic Phonetics is a relatively recent development involving several disciplines and a mixture of traditional and high-tech approaches.
Ethics in this field are paramount.
Additional research is needed in every facet of forensic phonetics.
What is Forensic Phonetics?
Linguistics
Phonetics
Forensic Phonetics
The application of expertise in phonetics to issues involving law enforcement and legal contexts
An exceptionally high standard of ethics is required for anyone contributing to the field of forensic science.
By: Jennifer Bliss
LADO
Language Analysis for the Determination of Origin of Asylum Seekers
References

Fraser, H. (2011). Forensic Phonetics. Retrieved from
http://helenfraser.com.au/forensic/#section-1

Glitza, F. (2002). Forensic Phonetics. Retrieved from
http://sciencecareers.sciencemag.org/career_magazine/previous_issues/articles/2002_06_21/nodoi.13719854684495285209

Hollien, H., Bahr, R. H., & Harnsberger, J. D. (in press).
Issues in forensic voice. Journal of Voice. Retrieved from http://ezproxy.twu.edu:2055/science/article/pii/S0892199713001318#

Rodman, R. (2002). Linguistics and the law: How
knowledge of, or ignorance of, elementary linguistics may affect the dispensing of justice. Forensic Linguistics, 9 (1), p. 92-101.
Fraser (2011), Hollien, Bahr, & Harnsberger (in press)
Fraser (2011),
Glitza (2002),
Hollien et al. (in press)
Hollien et al. (in press)
Hollien et al. (in press), p. 4
Fraser (2011)
Hollien et al. (in press)
Hollien et al. (in press), p. 11
Glitza (2002), Hollien et al. (in press)
Potential Pitfalls
"Ignorance of elementary linguistic concepts may have a bearing on justice" (Rodman, 2002, p. 92).

Haitian-born American sentenced to prison for 12 years on drug charges
Guilty verdict based on alleged recording of the defendant
Prosecution made incorrect claims regarding basic linguistic principles that resulted in the defendant's conviction
Rodman, 2002
Full transcript