Sergio Feijóo

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The role of fricative context on vowel recognition in a series of FV syllables being part of natural Spanish words is investigated. Perceptual tests were carried out to assess the recognition of vowels in fricative context, in two conditions: 1) Isolated vowel; 2) Fricative noise + vowel. Analysis of results show that adding the fricative noise improves the(More)
Auditory identification of phonemes depends on the target phoneme and on the signal surrounding it. Two sources of information have been proposed to explain this fact: a) coarticulatory information in adjacent segments; b) the phonetic identity of the segments. It is not clear yet if the target and adjacent segments are processed jointly, or if they are(More)
The interaction of consonantal and vocalic segments in FV syllables regarding identification of place of articulation of frica-tives has been studied. A probabilistic model for integration of acoustic information in both segments is proposed. The model weights each segment's contribution and integrates them in order to resemble listeners' perception. First,(More)
This study deals with the relation between the spectral representation and the perceptual identification of the Spanish fricatives and affricates. Several spectral representations have been analyzed: FFT-derived linear cepstrum, mel cepstrum coefficients, LPC cepstral coefficients and the first four statistical moments. Quadratic discriminant analysis(More)
The perception of voiced fricatives by native speakers of a language which lacks those phonemes is studied in this paper. Brasil-ian portuguese and Galician languages were chosen because they are historically related. A forced choice test reveals that listeners correctly perceive the place of articulation of the voiced fricatives. In order to examine(More)