Jorge Proença 1 Dirce Celorico 1 Arlindo Veiga 1,2 Sara Candeias 1 Fernando Perdigão 1,2 1 Instituto de Telecomunicações, Coimbra, Portugal 2 University of Coimbra, DEEC, Portugal Acoustical Characterization of Vocalic Fillers in European Portuguese The 6th Workshop on Disfluency in Spontaneous Speech Stockholm, Sweden August 21-23, 2013
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Jorge Proença 1
Dirce Celorico 1
Arlindo Veiga 1,2
Sara Candeias 1
Fernando Perdigão 1,2
1Instituto de Telecomunicações, Coimbra, Portugal2University of Coimbra, DEEC, Portugal
Acoustical Characterization of
Vocalic Fillers in European Portuguese
The 6th Workshop on Disfluency in Spontaneous Speech
Stockholm, Sweden August 21-23, 2013
2
DiSS 2013
Stockholm, Sweden - August 21-23, 2013
Scope
Objectives
Characterization of the corpus
Formant frequencies determination
Results Duration
F1 and F2
Variation rates
Conclusions and future work
SUMMARY
3
DiSS 2013
Stockholm, Sweden - August 21-23, 2013
Scope
Objectives
Characterization of the corpus
Formant frequencies determination
Results Duration
F1 and F2
Variation rates
Conclusions and future work
SUMMARY
4
DiSS 2013
Stockholm, Sweden - August 21-23, 2013
Studying events that characterize the spontaneity of the speech has been
increasingly relevant as the development of speech technologies grows.
Studies on hesitations (so-called disfluencies) as well as vowel reductions
have gained importance over the last years.
Hesitation phenomena:
repetitions, truncated words, word fillers;
vocalic extensions into words;
filled pauses.
SCOPE
5
DiSS 2013
Stockholm, Sweden - August 21-23, 2013
Hesitation phenomena:
repetitions, truncated words, word fillers;;
vocalic extensions into words;
filled pauses.
The most occurring, mainly on
spontaneous speech;
Occurring without any lexical
support;
Mostly fulfilled by relatively
stable vocalic segments.
Our previous studies say…
Filled pause vocalizations
or
Vocalic fillers (VFs)
Studying events that characterize the spontaneity of the speech has been
increasingly relevant as the development of speech technologies grows.
Studies on hesitations (so-called disfluencies) as well as vowel reductions
have gained importance over the last years.
SCOPE
6
DiSS 2013
Stockholm, Sweden - August 21-23, 2013
Vocalic fillers (VFs)Why ?
represent an insertion at any moment during spontaneous speech;
carry multiple functions in the communication performance:
announcing upcoming discursive topics,
planning and delaying speech,
…
SCOPE
To develop an automatic detector of fillers
from continuous speech.
7
DiSS 2013
Stockholm, Sweden - August 21-23, 2013
Scope
Objectives
Characterization of the corpus
Formant frequencies determination
Results Duration
F1 and F2
Variation rates
Conclusions and future work
SUMMARY
8
DiSS 2013
Stockholm, Sweden - August 21-23, 2013
Studying the two most common VFs in European Portuguese:
the near-open central vowel [ɐ],
mid-central vowel [ə].
OBJECTIVE
How ? Acoustically characterizing VFs.
Analyzing:
first and second formant frequencies,
duration and
variation rates.
Comparing with lexical vowels (LVs) of similar timbre.