Search for dissertations about: "speaker characteristics"

Showing result 1 - 5 of 14 swedish dissertations containing the words speaker characteristics.

2. 1. Accounting for Individual Speaker Properties in Automatic Speech Recognition

   Author : Daniel Elenius; Björn Granström; Mats Blomberg; Torjbjörn Svendsen; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; MAP; MLLR; VTLN; speaker characteristics; dynamic modeling; child; Information and language technology; Informations- och språkteknologi;

   Abstract : In this work, speaker characteristic modeling has been applied in the fields of automatic speech recognition (ASR) and automatic speaker verification (ASV). In ASR, a key problem is that acoustic mismatch between training and test conditions degrade classification per- formance. READ MORE

4. 2. Estimation of Speaker Age : Effects of Speech Properties and Speech Material

   Author : Sara Skoog Waller; Mårten Eriksson; Billy Jansson; Mittuniversitetet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Age estimation; Voice perception; Speech properties; Speech rate; Vocal disguise; Age disguise; Accuracy; Confidence; Spontaneous speech;

   Abstract : The aim of this thesis was to investigate factors related to accuracy in estimation of speaker age and the role of certain speech properties in perception and manipulation of speaker age, as well as their interaction with the speech material that the age estimates were based on. This thesis consists of three studies. READ MORE

5. 3. The introductory it pattern in academic writing by non-native-speaker students, native-speaker students and published writers : A corpus-based study

   Author : Tove Larsson; Merja Kytö; Erik Smitterberg; Randi Reppen; Uppsala universitet; []
   Keywords : HUMANIORA; HUMANITIES; The introductory it pattern; stance markers; non-native-speaker students; native-speaker students; published expert writing; learner language; corpus linguistics; English; Engelska;

   Abstract : The present compilation thesis investigates the use of a pattern that is commonly found in academic writing, namely the introductory it pattern (e.g. it is interesting to note the difference). The main aim is to shed further light on the formal and functional characteristics of the pattern in academic writing. READ MORE

6. 4. Lip-motion and speech biometrics in person recognition

   Author : Maycel Isaac Faraj; Högskolan i Halmstad; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Audio-visual recognition; biometrics; Biometric recognition; Speaker verification; Speaker authentication; Person identification; Lip movements; Motion; Structure tensor; Orientation; Optical flow; Hidden Markov Model; Gaussian Markov Model; Lip-motion; Image analysis; Bildanalys;

   Abstract : Biometric identification techniques are frequently used to improve security, e.g. in financial transactions, computer networks and secure critical locations. The purpose of biometric authentication systems is to verify an individual by her biological characteristics including those generating characterisitic behaviour. READ MORE

7. 5. Lip-motion biometrics for audio-visual identity recognition

   Author : Maycel Isaac Faraj; Massimo Tistarelli; Högskolan i Halmstad; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biometrics; Lip motion; Audio-visual signals; Speech recognition; Speaker recognition; Digit recognition; Image analysis; Bildanalys;

   Abstract : Biometric recognition systems have been established as powerful security tools to prevent unknown users from entering high risk systems and areas. They are increasingly being utilized in surveillance and access management (city centers, banks, etc.) by using individuals' physical or biological characteristics. READ MORE