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Showing result 1 - 5 of 29 swedish dissertations matching the above criteria.

2. 1. The language learning infant: Effects of speech input, vocal output, and feedback

   Author : Lisa Gustavsson; Francisco Lacerda; Roger Moore; Stockholms universitet; []
   Keywords : HUMANIORA; HUMANITIES; human; language; language acquisition; perception; production; humanoid; development; model; embodied system; speech signal processing; vocal tract morphology; acoustic; speech input; information processing; scaling; interaction; growth; infant; imitation; feedback; perceptual salience; modeling; Phonetics; Fonetik; Phonetics; fonetik;

   Abstract : This thesis studies the characteristics of the acoustic signal in speech, especially in speech directed to infants and in infant vocal development, to gain insight on essential aspects of speech processing, speech production and communicative interaction in early language acquisition. Three sets of experimental studies are presented in this thesis. READ MORE

4. 2. Aerodynamic measurements of normal voice

   Author : Eva Holmberg; Stockholms universitet; []
   Keywords : HUMANIORA; HUMANITIES; Normal voice; inverse filtering; glottal airflow waveform; subglottal air pressure; Phonetics; Fonetik; Phonetics; fonetik;

   Abstract : Vocal fold vibration results from an alternating balance between subglottal air pressure that drives the vocal folds apart and muscular, elastic, and restoring forces that draw them together. The aim of the present thesis is to present quantitative data of normal vocal function using a noninvasive method. READ MORE

5. 3. Emergence of words : Multisensory precursors of sound-meaning associations in infancy

   Author : Eeva Klintfors; Francisco Lacerda; Daniel Swingley; Stockholms universitet; []
   Keywords : HUMANIORA; HUMANITIES; language acquisition; word acquisition; auditory-visual; multisensory; sound-meaning association; distributional learning; perceptual salience; infancy; språkinlärning; ordinlärning; audio-visuell; multisensorisk; förbindelser mellan ljud och betydelse; distributionell inlärning; perceptuell prominens; spädbarn; Phonetics; Fonetik; Phonetics; fonetik;

   Abstract : This thesis presents four experimental studies, carried out at the Phonetic laboratory, Stockholm University, on infants’ ability to establish auditory-visual sound-meaning associations as a precursor of early word acquisition. Study I reports on the effect of linguistic variance on infants’ ability (3- to 20-months) to establish sound-meaning associations. READ MORE

6. 4. Acoustic Properties as Predictors of Perceptual Responses : a Study of Swedish Voiced Stops

   Author : Diana Krull; Stockholms universitet; []
   Keywords : HUMANIORA; HUMANITIES; Phonetics; Fonetik; Phonetics; fonetik;

   Abstract : In speech recognition algorithms and certain theories of speech perception the interpretation of the signal is based on " distance scores " for comparisons of the signal with stored references; in these theories, perception is seen as a product of stimulus and experience. The aim of the present thesis is to evaluate such distance measures by investigating the perceptual confusions of the Swedish voiced stops [b,d,q,g] in systematically varied fragments of vowel-consonantvowel stimuli providing 25 vowel contexts for each consonant. READ MORE

7. 5. Effects of peripheral auditory adaptation on the discrimination of speech sounds

   Author : Francisco Lacerda; Hartmut Traunmüller; Olle Engstrand; Björn Lindblom; Louis Pols; Stockholms universitet; []
   Keywords : HUMANIORA; HUMANITIES; Adaptation; discrimination; categorical perception; Phonetics; Fonetik; Phonetics; fonetik;

   Abstract : This study investigates perceptual effects of discharge rate adaptation in the auditory-nerve fibers. Discrimination tests showed that brief synthetic stimuli with stationary formants and periodic source were better discriminated when they had an abrupt as opposed to a gradual onset (non-adapted vs adapted condition). READ MORE