Central and Eastern European Survey
General Info
Department of Phonoscopic Examination
Lithuanian Institute of Forensic Examination
Type of Organisation: public
Number of Employees: Less than 10
Activities developed: Research, Education, Services, Software.
For speaker identification we
use algorithms that were developed by our Department.
There are algorithms for computation of pitch and relative distances, using
pseudostationary segments and some linguistic features of Lithuanian
language. 7 experts work at our Department that are capable to use the
developed methods. A research work for improvement of speaker
identification methods and development new algorithms is being done, using
neural networks theory.
We use C programming language, Windows and DOS operating systems. At our
department three working sites are arranged for phonoscopic examination.
These consist of:
- three IBM PC (two IBM486, one IBM586) with 16-bit converters A/D and D/A;
- software for digital processing and graphical representation of speech
signals;
- software for measurement of acoustic parameters of speaker and for
evaluation of their statistical distributions;
- software for determination of an authentity of speech records
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