Search for dissertations about: "Perceptual scaling"

Showing result 1 - 5 of 12 swedish dissertations containing the words Perceptual scaling.

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. On Perceived Exertion and its Measurement

   Author : Elisabet Borg; Birgitta Berglund; Ana Garriga-Trillo; Stockholms universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Perceptual scaling; psychophysics; Category-Ratio scale; perceived exertion; interindividual comparisons; Psychology; Psykologi; psykologi; Psychology;

   Abstract : The general aim of the thesis is to answer questions on general and differential aspects of perceived exertion and on the measurement of its intensity variation. Overall perceived exertion is commonly treated as a unidemensional construct. This thesis also explores its multidimensional character. Four empirical studies are summarized (Study I-IV). READ MORE

5. 3. On Enhancement and Quality Assessment of Audio and Video in Communication Systems

   Author : Andreas Rossholm; Blekinge Tekniska Högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; QoE; video quality assessment; video quality metric; multi-linear regression; artificial neural network; support vector machine; quality predictor; machine learning; temporal scaling; spatial scaling; video compression; deblocking filter; noise cancelling; synchronization; audio delay; video delay; GSM interference signal; noise cancellation; notch filtering;

   Abstract : The use of audio and video communication has increased exponentially over the last decade and has gone from speech over GSM to HD resolution video conference between continents on mobile devices. As the use becomes more widespread the interest in delivering high quality media increases even on devices with limited resources. READ MORE

6. 4. Getting a Feel for Tactile Space : Exploring Haptic Perception of Microtexture

   Author : Martin Arvidsson; Birgitta Berglund; Steven Hsiao; Stockholms universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Haptic; fine texture perception; multidimensional scaling; tactile; roughness; vibrations; spatial; Psychology; psykologi;

   Abstract : The present thesis is based on three studies that research different aspects of fine texture perception. The goal is to better understand the mechanisms involved in haptic perception of textures below 200 µm, also known as microtextures. READ MORE

7. 5. Quantitative and qualitative analysis of touch, cold and warmth in health, neuropathic pain and fibromyalgia

   Author : Eva-Liz Harju; Gary B Rollman; Stockholms universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Ongoing pain; tactile and thermal dys function; perceived intensity; Master Scaling; perceived quality; Känsel; Smärta; fysiologisk psykologi; Fibromyalgi; psykologi; Psychology;

   Abstract : The general aim of the present thesis is to examine tactile and thermal perceptual (dys)function by quantitative and qualitative tests of patients with neuropathic pain or fibromyalgia, and to compare results with those of healthy persons. A specific aim is to provide individual data for diagnostic purposes, specific to touch, cold, and warmth (profiles). READ MORE