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802 Uppsatser om Automatic Speech Recognition - Sida 1 av 54

Automatisk Identifiering av Inandningspauser i Spontant Tal - ett HMM/ANN-hybridsystem i Matlab

This thesis presents a system which has been implemented to satisfy a need in theresearch on how speech planning interacts with syntactic and prosodic structure inspontaneous speech. The long-term purpose of the research is to provide models forautomatic parsing of spontaneous speech and for psycholinguistical modelling of speechproduction. Identification of inhalation pauses is an important step in the developmentof automatic methods for spontaneous speech parsing.Identification of inhalation pauses is considered to be a keyword-spotting speechrecognition problem. Hybrid HMM(Hidden Markov Models)/ANN(Artificial NeuralNetworks) approach is applied to this problem. Method gets 90,8% in Recall, 66,4% inPrecision and 76,7% in F-score.

Taluppfattningstest med enstaviga ord i brus: Normalvärden för barn i åldrarna 7, 10 och 13 år

Background: Phonemically balanced word lists are used when obtaining speech recognition scores in noise. These lists are designed for adults, but are still used for children. To properly obtain speech recognition scores in noise for children, normative data is needed to show what differences there are to be expected between children of different ages. Purpose: The main purpose is to obtain normative data for children in the ages of 7, 10 and 13 years for speech recognition scores in noise using words and to compare these with each other and with normative data of adults. A further purpose is to examine if there is any practice- or exhaustion effect to be seen when obtaining speech recognition scores in noise for children in the ages of 7, 10 and 13 years.Material: The participants were ten 7-year-olds, ten 10-year-olds and ten 13-year-olds.

Förväxlingar av ord i testet FB S/N +4

It is always more demanding and the risk for misunderstanding increases when communicating in noisy environments. The confusions and the mistakes that occur when speech is disturbed are very interesting and happens constantly. The purpose of this study was to examine speech recognition results from the test PB S/N +4 and find out which confusions that are made by the normal hearing and by the hearing impaired persons in the speech lists 3 and 4, and also analyse the mistakes from a phonetic perspective. Ten normal hearing and 50 persons with impaired hearing participated in the study. The people with impaired hearing were divided into two groups; DTMV 40 dB HL.The results were compared between the normal hearing and those with impaired hearing.

Kan talspråk integreras inom kunskapsorganisation? Problematiken med talspråk som bibliografiskt språk

Writing has been the most important tool in knowledge organization KO. In our modern society we can use our speech as a technical tool to seek information. Can we apply speech as a tool to organize information? The aim of this masters thesis is to problemize speech aspects in the field of knowledge organization KO. The investigation has two main parts and I use a hermeneutic approach.


Tal till text för relevant metadatataggning av ljudarkiv hos Sveriges Radio

Tal till text för relevant metadatataggning av ljudarkiv hos Sveriges RadioSammanfattningUnder åren 2009-2013 har Sveriges Radio digitaliserat sitt programarkiv. Sveriges Radios ambition är att mer material från de 175 000 timmar radio som sänds varje år ska arkiveras. Det är en relativt tidsödande process att göra allt material sökbart och det är långt ifrån säkert att kvaliteten på dessa data är lika hög hos alla objekt.        Frågeställningen som har behandlats för detta examensarbete är: Vilka tekniska lösningar finns för att utveckla ett system åt Sveriges Radio för automatisk igenkänning av svenskt tal till text utifrån deras ljudarkiv?        System inom tal till text har analyserats och undersökts för att ge Sveriges Radio en aktuell sammanställning inom området.        Intervjuer med andra liknande organisationer som arbetar inom området har utförts för att se hur långt de har kommit i sin utveckling av det berörda ämnet.        En litteraturstudie har genomförts på de senare forskningsrapporterna inom taligenkänning för att jämföra vilket system som skulle passa Sveriges Radio behov och krav bäst att gå vidare med.        Det Sveriges Radio bör koncentrera sig på först för att kunna bygga en ASR, Automatic Speech Recognition, är att transkribera sitt ljudmaterial. Där finns det tre alternativ, antingen transkribera själva genom att välja ut ett antal program med olika inriktning för att få en så stor bredd som möjligt på innehållet, gärna med olika talare för att sedan även kunna utveckla vidare för igenkänning av talare.

Yttrandefrihetens gränser : En prövning utifrån tre fall och tre teoretiker

Freedom of speech has been a well discussed subject. Great philosophers and theoretics like Plato, Voltaire, Locke and Mill have again and again showed the importance of freedom of speech. Since the world have become bystanders to a series of events that can only classify as crimes aganst freedom of speech, it has become more important to study the phenomenon and analyse it. By finding cases where the freedom of speech has been compromised and analyse them in frames of three different theories, the argument of truth, the argument of democracy and the argument of tolerance, this paper makes the boundaries of freedom of speech a little clearer, and also makes a discussion about how reasonable the boundaries are possible. Everything according to the three theories.

Automatisk trimning av externa axlar

This master theses deals with different methods for automatic tuning of the existing controller for external axis. Three methods for automatic tuning have been investigated. Two of these are based on the manuell method used today. The third method is based on optimal placement of the dominant poles. Different sensitivity functions are important for this method.

Perceptuell bedömning av tal före och efter svalglambåplastik hos patienter med velofarynxinsufficiens

Velopharyngeal insufficiency may affect resonance, articulation and thus how speech is perceived by other listeners. Velopharyngeal insufficiency is frequently found in the cleft palate population due to structural abnormalities of the palate. The pharyngeal flap is the most commonly used operation designed to improve velopharyngeal function. The aim of the present study was to compare speech before and after pharyngeal flap surgery by perceptual evaluation regarding nasality, articulation and deviant speech. The study includes preoperative and postoperative speech samples of 28 patients who underwent pharyngeal flap surgery at the University Hospital in Linköping between 2002 and 2007.

Unga vuxna med unilateral läpp-, käk- och gomspalt ? perceptuell bedömning och självskattning av tal och kommunikation

The purpose of this study was to investigate how young adults withunilateral cleft lip and palate assess their own speech and communication,and to let speech and language pathologists make a perceptual analysis ofthese individuals? speech at the age of 19 years. An additional aim was toexamine the relationship between these two different ways of evaluation.Data was collected through perceptual analysis from audio recordings and byusing a self-report questionnaire based on the ICF-structure (InternationalClassification of Function, disability and health). Altogether, 33 peopleparticipated. One third of the participants had no speech deficiencies.

Talresultat hos 16-åringar födda med unilateral läpp-, käk- och gomspalt samt jämförelse mellan erfarna och otränade lyssnares bedömningar

In this study the speech of adolescents with unilateral cleft lip andpalate (UCLP) and delayed closure of the hard palate was evaluated.Evaluations were made with experienced speech-language pathologists(SLP:s) and lay listeners. The SLP evaluation consisted of typical cleft palatespeech variables and some of them were adapted for lay listeners. Attitudestowards the speech of the adolescents were investigated by asking laylisteners if the speech constituted any hindrance to vocational performance.The SLP:s mainly found nasal escape and velopharyngeal impairment (VPI),although to a small degree and extent. The lay listeners mainly foundresonance deviations and indistinct speech. The latter was associated withhindrance to vocational performance.

Perceptuell bedömning av tal och röst hos vuxna med 22q11-deletionssyndrom

Speech anomalies have been described as characteristic symptoms forthe 22q11 deletion syndrome. However, research on speech and voice in adultswith the syndrome is still scarce. Previous research has indicated that speech andvoice anomalies seen in children with the syndrome might have neurologicalcauses. The aim of this study is to investigate speech and voice in a group ofadults diagnosed with the 22q11 deletion syndrome, with extra focus onanomalies with possible neurological cause. The researched group consisted of24 adults between the ages 19 to 38 with a verified 22q11-deletion, 16 womenand 8 men.

Reproduktionen ? Validering av reell kompetens och högskolans rådande ordning

This thesis examines the relationship between recognition of prior learning and the aim to increase social and ethnical diversity in higher education. Recognition of prior learning is a result of educational politics aiming to broaden social and ethnical recruitment to higher education. By examining if recognition of prior learning rather can, and shall, be seen as part of what Pierre Bourdieu calls educational social reproduction I try to question whether it fulfils education policy goals or not. My results show that persons responsible for recognition of prior learning rather recognise knowledge from prior educational institutions than knowledge gained outside the educational system. Considering this, recognition of prior learning does not quite live up to the aims.

Alternativa metoder för att kontrollera ett användargränsnitt i en browser för teknisk dokumentation

When searching for better and more practical interfaces between users and their computers, additional or alternative modes of communication between the two parties would be of great use. This thesis handles the possibilities of using eye and head movements as well as voice input as these alternative modes of communication. One part of this project is devoted to find possible interaction techniques when navigating in a computer interface with movements of the eye or the head. The result of this part is four different controls of an interface, adapted to suit this kind of navigation, combined together in a demo application. Another part of the project is devoted to the development of an application, with voice control as primary input method.

Automatisk textsammanfattning: en experimentell studie

The principal aim of this thesis is to test if extracts, produced by the automatic summarizer "Copernic Summarizer", are possible to use as abstracts. The aim is also to give a picture of what automatic summarization is and why it is motivated. Three questions are asked: What is automatic summarization and what can it be used for? Is it possible to replace the author-written abstracts with extracts from "Copernic Summarizer"? Is automatic summarization motivated for the different areas of use that are identified in the first question? An automatic summarizer is a program that is intended to summarize text automatically and it can be used for different purposes, for example for summarizing WebPages or scientific articles. To answer the second question an experiment is carried out.

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