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Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 1 až 20 z 124
Soutner, Daniel , Müller, Luděk
On continuous space word representations as input of LSTM language model

Artificial neural networks have become the state-of-the-art in the task of language modelling whereas Long-Short Term Memory (LSTM) networks seem to be an efficient architecture. The continuous skip-gram and the continuous bag of words (CBOW) are algorithms for learning quality distributed v...

Hanzlíček, Zdeněk , Grůber, Martin
Initial experiments on automatic correction of prosodic annotation of large speech corpora

Most modern speech synthesis systems utilize large speech corpora to learn new voices. These speech corpora usually contain several hours of speech spoken by talented speakers who are able to record such an amount of speech data in a sufficient quality. An appropriate phonetic ...

Jiřík, Miroslav , Neduchal, Petr
Experiments with automatic segmentation of liver parenchym using texture description

This paper provides summary of our experiments with automatic segmentation of liver parenchym. It presents methods and classifiers that we used on computer tomography medicine data. In introduction there are a description of our motivation to do this research. Second part contains infor...

Campr, Pavel , Pražák, Aleš , Psutka, Josef V. , Psutka, Josef
Online speaker adaptation of an acoustic model using face recognition

We have proposed and evaluated a novel approach for online speaker adaptation of an acoustic model based on face recognition. Instead of traditionally used audio-based speaker identification we investigated the video modality for the task of speaker detection. A simulated on-lin...

Tihelka, Daniel , Hanzlíček, Zdeněk , Machač, Pavel , Skarnitzl, Radek , Matoušek, Jindřich
On the impact of labialization contexts on unit selection speech synthesis

This paper presents a study on coarticulatory labialization and the significance of its respecting/violation during selection and concatenation of speech units in the unit selection speech synthesis. The aim of this study is to improve the overall speech quality, especially to increase&...

Fischerová, Petra , Radová, Vlasta
A way of segmentation of speech recorded simultaneously by two microphones

This paper deals with a problem of segmentation of speech that was recorded by two microphones simultaneously. We suppose that we have a stereo record of an interview between two speakers. The interview is recorded in such a way that each speaker has his/her own micr...

Goubej, Martin , Škarda, Radek , Schlegel, Miloš
Input shaping filters for the control of electrical drive with flexible load

This paper deals with control of flexible mechanical systems. The goal is to modify the input signal in order to minimize the residual vibrations excited during a motion of a system with flexible parts. The filter is designed in the time domain via impulse function analys...

Grůber, Martin , Legát, Milan , Ircing, Pavel , Romportl, Jan , Psutka, Josef
Czech senior COMPANION: wizard of Oz data collection and expressive speech corpus recording and annotation

This paper presents part of the data collection efforts undergone within the projectCOMPANIONS whose aim is to develop a set of dialogue systems that will be ableto act as an artificial "companions"' for human users. One of these systems, being developed in Czech lang...

Hrúz, Marek , Trojanová, Jana , Železný, Miloš
Local binary pattern based features for sign language recognition

In this paper we focus on appearance features describing the manual component of Sign Language particularly the Local Binary Patterns. We compare the performance of these features with geometric moments describing the trajectory and shape of hands. Since the non-manual component is also...

Psutka, Josef V. , Pražák, Aleš , Psutka, Josef , Radová, Vlasta
Captioning of live TV commentaries from the Olympic games in Sochi: some interesting insights

In this paper, we describe our effort and some interesting insights obtained during captioning more than 70 hours of live TV broadcasts from the Olympic Games in Sochi. The closed captioning was prepared for CT Sport, the sport channel of the public service broadcaster in ...

Ircing, Pavel , Müller, Luděk
Benefit of proper language processing for czech speech retrieval in the CL-SR task at CLEF 2006

The paper describes the system built by the team from the University of West Bohemia for participation in the CLEF 2006 CL-SR track. We have decided to concentrate only on the monolingual searching in the Czech test collection and investigate the effect of proper language ...

Ircing, Pavel , Pecina, Pavel , Oard, Douglas W. , Wang, Jianqiang , White, Ryen W. , Hoidekr, Jan
Information retrieval test collection for searching spontaneous czech speech

This paper describes the design of the first large-scale IR test collection built for the Czech language. The creation of this collection also happens to be very challenging, as it is based on a continuous text stream from automatic transcription of spontaneous speech and thus...

Ircing, Pavel , Psutka, Josef , Psutka, Josef V.
Using morphological information for robust language modeling in czech ASR system

Automatic speech recognition, or more precisely language modeling, of the Czech language has to face challenges that are not present in the language modeling of English. Those include mainly the rapid vocabulary growth and closely connected unreliable estimates of the lang...

Kolář, Jáchym
A comparison of language models for dialog act segmentation of meeting transcripts

This paper compares languagemodeling techniques for dialog act segmentation of multiparty meetings. The evaluation is twofold; we search for a convenient representation of textual information and an efficient modeling approach. The textual features capture word identities, parts-of-speech, and...

Kolář, Jáchym , Švec, Jan
The czech broadcast conversation corpus

This paper presents the final version of the Czech Broadcast Conversation Corpus that will shortly be released at the Linguistic Data Consortium (LDC). The corpus contains 72 recordings of a radio discussion program, which yields about 33 hours of transcribed conversational speech from&...

Kolář, Jáchym , Liu, Yang
Automatic sentence boundary detection in conversational speech: a cross-lingual evaluation on english and czech

Automatic sentence segmentation of speech is important for enriching speech recognition output and aiding downstream language processing. This paper focuses on automatic sentence segmentation of speech in two different languages -- English and Czech. For this task, we compare and combine thr...

Kolář, Jáchym , Liu, Yang
Comparing and combining modeling techniques for sentence segmentation of spoken czech using textual and prosodic information

This paper deals with automatic sentence boundary detection in spoken Czech using both textual and prosodic information. This task is important to make automatic speech recognition (ASR) output more readable and easier for downstream language processing modules. We compare and combine three&...

Kanis, Jakub , Skorkovská, Lucie
Comparison of different lemmatization approaches through the means of information retrieval performance

This paper presents a quantitative performance analysis of two different approaches to the lemmatization of the Czech text data. The first one is based on manually prepared dictionary of lemmas and set of derivation rules while the second one is based on automatic inference of...

Romportl, Jan , Zovato, Enrico , Santos, Raúl , Ircing, Pavel , Relaño Gil, José , Danieli, Morena
Application of expressive TTS synthesis in an advanced ECA system

The research project COMPANIONS aims at developing an advanced embodied conversational agent (ECA). This ECA is used in two scenarios and two languages (English and Czech), and it requires a TTS system being able to generate very natural expressive and emotional speech output. This...

Romportl, Jan
Automatic prosodic phrase annotation in a corpus for speech synthesis

In order to improve speech naturalness of a unit selection TTS system it is necessary to annotate prosodic phrase boundaries in the whole source corpus, which is extremely difficult to achieve manually. It is thus usefull to employ a machine classifier. This paper discusses su...

Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 1 až 20 z 124