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| 2. |
- Borin, Lars, 1957, et al.
(författare)
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Metadata descriptions and other interoperability standards : Deliverable D4.1
- 2011
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- An important aim of META-NORD is to upgrade and harmonize national language resources and tools in order to make them interoperable, within languages and across languages, with respect to their data formats and as far as possible also as regards their content. Since resources and to some extent tools will remain in one location – one of a number of META-NORD centers – the preferred way of accessing and utilizing resources and tools will be through metadata and APIs, allowing the assembly of on-the-fly tool-chains made up of standardized component language technology tools, processing distributed – and in many cases interlinked – language resources in standardized formats.
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| 6. |
- Gustavsson, Lisa, et al.
(författare)
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Neural processing of voices - familiarity
- 2013
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Ingår i: Proceedings of Meetings on Acoustics. - : Acoustical Society of America (ASA). - 1939-800X. ; 19:I
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Konferensbidrag (refereegranskat)abstract
- Brain responses to familiar and unfamiliar voices were investigated with ERPs (Event Related Potentials). Presentation of a stream of one syllable utterances from a female voice established a standard expectation, and similar samples from four other male voices where inserted as unexpected deviants in a typical mismatch paradigm. The participants were 12 students from the basic course in linguistics. Two of the deviant voices were familiar voices of their teachers. The two other deviant voices were matched (same age, sex and dialect) but unfamiliar to the participants. A typical MMN (Mismatch Negativity) was elicited, i.e. a more negative response to the deviants compared to the standards. In contrast to verbal reports, where only one participant identified any of the deviant voices, the MMN response differed on group level between familiar and unfamiliar voices. MMN to familiar voices was larger. Using teachers' voices ensured naturalistic long term exposure, but did not allow for random assignment to conditions of familiarity making the design quasi-experimental. Thus acoustic analysis of voice characteristics as well as follow up studies with randomized exposure to voices are needed to rule out possible confounds and establish a causal effect of voice familiarity.
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| 7. |
- Hu, Guohua, et al.
(författare)
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Effects of initial sounds on the perception of Chinese disyllable tones by Swedish students of Chinese
- 2014
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Ingår i: 2014 International Conference on Phonetic Research and Language Learning (ICPRLL) & English Phonetic Conference in China (EPCC).
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- ABSTRACT This paper extends previous research on the effects of initial sounds on perception of Chinese disyllable tones. A perception test was performed on Swedish adult students of Chinese using disyllable words (most previous studies have been made using solely monosyllable words). The main results indicate that voiced initial sounds e.g. [l] have a strong connection to the tone confusion pattern Tone 2 perceived as Tone 3. On the contrary, a voiceless aspirated initial sound e.g. [th] is mostly connected to misidentifications between Tone 3 to Tone 2. Unvoiced unaspirated initial sounds affect tone perception heavily, especially when they occur in the second syllable of a disyllabic word.
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| 8. |
- Hu, Guohua, et al.
(författare)
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PERCEPTUAL MISTAKES OF CHINESE TONES IN 2-SYLLABLE WORDS BY SWEDISH LISTENERS
- 2010
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Ingår i: Proceedings of the Fourth European Conference on Tone and Intonation (TIE4).
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Earlier studies on the perception of Chinese tones have almost exclusively used 1-syllable words for the listening tests (Kiriloff, 1969; Chuang, 1971; Klatt, 1973; Gandour, 1978). In these earlier studies the misperception between tone 2 and tone 3 has been shown to be the most common. However, no studies that we have found have looked at the perception of 2- syllable words besides Chuang (1971), who only used nonsense words. By tradition the teaching of Chinese as a foreign language has been concentrated on training of perception and production of tones since adult students have been shown to show particular difficulties in perceiving their difference. Experienced teachers have through tests established that this assumption is not valid when it comes to the so-called static tone. When it comes to communicating in Chinese and to be able to use the separate tones it is not enough to know the difference in 1-syllable words especially since most modern words in standard Chinese contains 2 or more. Guo (1993) has shown that the more syllables a word contains the higher ratio of misperceived tones. So far, no investigations for Swedish students have been performed. A possible hypothesis could be that Swedish listeners would perform better due to the Swedish grave and acute accents. By asking experienced teachers in Sweden, we knew that this should not be the case however. The general impressions from teachers are also that Swedish students have the largest proportion misperceptions between tone 2 and 3. To test this we conducted a listening test on 27 native speakers of Swedish (9 bilingual Chinese speakers with native ability in Swedish) on 25 Chinese 2-syllable lexical words with 15 different tone combinations. One male and one female native speaker of Chinese pronounced the words in isolation. The words were taken from a random number of 2-syllable glossary. Each speaker repeated the words once with 1 seconds pause in between the repetition and then 2 seconds pause before the new word. The audio was presented in high quality headphones in the student language lab at the University of Gothenburg. The participants were all second semester students of Chinese and the listening test was also an exam, which made the participants wanting to perform as well as possible. If they wanted they could repeat the sequence as many times as they until satisfied with their answer. The results show that produced tone 1 and tone 2 are confused more than 3 and 4 (tone 4 more than 3, see figure 1). However, the distribution of misperceptions seems to be rather equally distributed if we exclude the static tone (below called 0) in contradiction to earlier studies claiming misperception mostly between tone 2 and 3. However, we also notice that certain types of syllables containing different vowels are misperceived differently. The next step is to figure out if certain syllable nucleuses are more misperceived than others and in certain positions. These conclusions can in the future lead to new approaches when it comes to teaching students production and perception of tones.
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| 9. |
- Hughes, Owain Rhys, et al.
(författare)
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operAVoX - On PErson RApid VOice eXaminer : High-Quality Voice Analysis Made Easy with OperaVOX™ - the “On PErson RApid VOice eXaminer”
- 2012
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Ingår i: 5th national Conference in Logopedics. ; :5
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- At present, objective analysis of voice quality using acoustic parameters is only possible within a voice laboratory using specialist hardware and software. We have developed an easy-to-use portable voice analysis and feedback application running on the Apple iPhone, iPad, or iPod Touch. OperaVOX™ combines the signal processing power, easy connectivity, user-friendly interface, high-quality microphones and portability of these handheld devices with novel acoustic voice analysis algorithms to provide a powerful voice quality measurement tool that you can carry in your pocket. OperaVOX™ is designed for anyone who is interested in measuring the quality of their voice, such as a patient recovering following a stroke, a professional voice user such as singers or an aspiring actor. Built into OperaVOX™ are the validated Voice Handicap Index questionnaires and the ability for the user to record their voice for acoustic and perceptual analysis both on board the device and externally in the voice laboratory. Furthermore, the user can instruct OperaVOX™ to automatically and confidentially send these data via email to their speech therapist, voice coach or researcher team. OperaVOX™ makes it easy for everyone to accurately measure changes in the quality of their voice every hour, day, or week and without having to travel to the hospital. Two versions of OperaVOX™ will soon be available on the Apple App Store, one for the general public and another for professionals such as speech and language therapists. We have also worked with world-leading University research teams both in the UK and North America to develop bespoke versions of OperaVOX™ specifically tailored for their research and clinical requirements.
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| 13. |
- Lagging, Martin, 1965, et al.
(författare)
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Response prediction in chronic hepatitis C by assessment of IP-10 and IL28B-related single nucleotide polymorphisms.
- 2011
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Ingår i: PloS one. - : Public Library of Science (PLoS). - 1932-6203. ; 6:2
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Tidskriftsartikel (refereegranskat)abstract
- High baseline levels of IP-10 predict a slower first phase decline in HCV RNA and a poor outcome following interferon/ribavirin therapy in patients with chronic hepatitis C. Several recent studies report that single nucleotide polymorphisms (SNPs) adjacent to IL28B predict spontaneous resolution of HCV infection and outcome of treatment among HCV genotype 1 infected patients.
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| 14. |
- Lindh, Jonas, 1975
(författare)
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A Case Study of /r/ in the Västgöta Dialect
- 2006
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Ingår i: Papers from FONETIK 2006, Working Papers, 52, Department of Linguistics and Phonetics, Lund University. ; 52, s. 85-88
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Konferensbidrag (refereegranskat)
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| 15. |
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| 16. |
- Lindh, Jonas, 1975
(författare)
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A Model-Based Experiment Towards an Emotional Synthesis
- 2005
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Ingår i: Proceedings of the XVIIIth Swedish Phonetics Conference, Department of Linguistics, Göteborg University, eds Jonas Lindh & Anders Eriksson.
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Konferensbidrag (refereegranskat)
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| 20. |
- Lindh, Jonas, 1975, et al.
(författare)
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Comparison of Perceptual and ASR Results on the SweEval2016 Corpus
- 2016
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Ingår i: Proceedings of IAFPA25. 25th Annual Conference of the International Association for Forensic Phonetics and Acoustics. York, UK 24th – 27th July 2016.. ; , s. 110-111
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 21. |
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| 22. |
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| 23. |
- Lindh, Jonas, 1975
(författare)
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Forensic comparison of voices, speech and speakers : tools and methods in forensic phonetics
- 2017
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This thesis has three main objectives. The first objective (A) includes Study I, which investigates the parameter fundamental frequency (F0) and its robustness in different acoustic contexts by using different measures. The outcome concludes that using the alternative baseline as a measure will diminish the effect of low-quality recordings or varying speaking liveliness. However, both creaky voice and raised vocal effort induce intra-variation problems that are yet to be solved. The second objective (B) includes study II, III and IV. Study II investigates the differences between the results from an ear witness line-up experiment and the pairwise perceptual judgments of voice similarity performed by a large group of listeners. The study shows that humans seem to be much more focused on similarities of speech style than features connected to voice quality, even when recordings are played backwards. Study III investigates the differences between an automatic voice comparison system and humans’ perceptual judgments of voice similarity. The experiments’ results show that it is possible to see a correlation between how speakers were judged as more or less different using multidimensional scaling of similarity ranks compared to both the automatic system and the listeners. However, there are also differences due to the fact that human listeners include information about speech style and have difficulties weighting the parameters, i.e. ignoring them when they are contradictory. Study IV successfully investigates a new functional method for how to convert the perceptual similarity judgments made by humans and then compare those to the automatic system results within the likelihood ratio framework. It was discovered that the automatic system outperformed the naïve human listeners in this task (using a very small dataset). The third objective (C) includes study V. Study V investigates several statistical modelling techniques to calculate relevant likelihood ratios using simulations based on existing reference data in an authentic forensic case of a disputed utterance. The study presents several problems with modelling small datasets and develops methods to take into account the lack of data within the likelihood ratio framework. In summary, the thesis contains a larger historical background to forensic speaker comparison to guide the reader into the current research situation within forensic phonetics. The work further seeks to build a bridge between forensic phonetics and automatic voice recognition. Practical casework implications have been considered throughout the work on the basis of own experience as a forensic caseworker and through collaborative interaction with other parties working in the field, both in research and in forensic practice and law enforcement. Since 2005, the author has been involved in over 400 forensic cases and given testimony in several countries.
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| 24. |
- Lindh, Jonas, 1975
(författare)
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Forensic speaker comparison evaluations
- 2015
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Ingår i: Proceedings of Roundtable in Forensic Linguistics 2015, September 4th- 6th, Mainz, Germany.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 25. |
- Lindh, Jonas, 1975
(författare)
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Forensic speaker comparison using machine and mind
- 2015
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Ingår i: 24th Annual Conference of the International Association for Forensic Phonetics and Acoustics, 8 - 10 July 2015, Leiden, Netherlands.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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