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Method and Tool Innovations for Speech Science Education (M.A.T.I.S.S.E.)
April 16-17, 1999
London, UK |
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Snorri, a software for speech sciences
Yves Laprie
LORIA/CNRS, Vandoeuvre-les-Nancy, France
Using tools for investigating speech signals is an invaluable help to
teach phonetics and more generally speech sciences. For several years we
have undertaken the development of the software Snorri which is for both
speech scientists as a research tool and lecturers in phonetics as an illustration
tool.
Unlike other softwares dedicated to signal processing, Snorri is intended
specifically to speech. It consists of five types of tools:
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to edit speech signals (e.g. to create stimuli for perception experiments).
The spectrogram is recomputed after each command (cut, paste, filtering,
damping) so that the acoustic consequences can be easily evaluated.
- to annotate phonetically or orthographically speech signals. The set of
phonetic symbols is fully parametrised so that it is possible to annotate
any language. Snorri offers tools to explore annotated corpora automatically.
- to analyse speech with a large set of spectral analyses and monitor spectral
peaks along time.
- to study prosody. Besides pitch calculation it is possible to synthesise
new signals by modifying the F0 curve and/or the speech rate.
- to generate parameters for Klatt’s synthesiser (e.g. to accurately control
which are the acoustic cues introduced in a speech signal). A user friendly
graphic interface and copy synthesis tools allows the user to generate
files for Klatt’s synthesiser easily.
In the context of speech sciences Snorri can therefore be exploited for
many purposes, among them, investigating acoustic cues of speech sounds
and prosody in order to evaluate their perceptive importance.
Full Paper
Bibliographic reference.
Laprie, Yves (1999):
"Snorri, a software for speech sciences",
In MATISSE-1999, 89-92.