Browsing by Author "Demiroğlu, Cenk"
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Adaptive MIMO free space optical communication systems
Free space optical (FSO) enjoys the high data rate of optical spectrum and have also the flexibility of RF links. FSO systems provide many advantages to the line of sight wireless communication technology. With the recent ... -
Advisor: an adaptive framework for test oracle automation of visual output systems
Genç, Ahmet Esat (2019-01-10)Test oracles differentiate between the correct and incorrect system behavior. Automation of test oracles for visual output systems mainly involves image comparison, where a snapshot of the observed output during test is ... -
Analysis of speaker similarity in the statistical speech synthesis systems using a hybrid approach
Güner, Ekrem; Mohammadi, A.; Demiroğlu, Cenk (IEEE, 2012)Statistical speech synthesis (SSS) approach has become one of the most popular and successful methods in the speech synthesis field. Smooth speech transitions, without the spurious errors that are observed in unit selection ... -
Analysis of speech-based measures for detecting and monitoring Alzheimer’s disease
Khodabakhsh, Ali; Demiroğlu, Cenk (Springer Science+Business Media, 2014)Automatic diagnosis of the Alzheimer’s disease as well as monitoring of the diagnosed patients can make significant economic impact on societies. We investigated an automatic diagnosis approach through the use of speech ... -
Anti-spoofing for text-independent speaker verification: An initial database, comparison of countermeasures, and human performance
Wu, Z.; Leon, P. L. de; Demiroğlu, Cenk; Khodabakhsh, Ali (IEEE, 2016-04)In this paper, we present a systematic study of the vulnerability of automatic speaker verification to a diverse range of spoofing attacks. We start with a thorough analysis of the spoofing effects of five speech synthesis ... -
Applications of time-series methods in electricity price forecasting
Ülgen, Toygar (2021-01-18)The prediction of day-ahead electricity prices with higher accuracy is always helpful for the market players of the power exchange. Models were designed in the first place to find out the best time-series estimation method ... -
Automatic detection of attachment style in married couples through conversation analysis
Koçak, Tuğçe Melike; Dibek, B. Ç.; Polat, Esma Nafiye; Kafesçioğlu, Nilüfer; Demiroğlu, Cenk (Springer, 2023-05-31)Analysis of couple interactions using speech processing techniques is an increasingly active multi-disciplinary field that poses challenges such as automatic relationship quality assessment and behavioral coding. Here, we ... -
Channel modeling for vehicular visible light communication
The demand for vehicular communication systems has increased since they are considered the key enabling technology for Intelligent Transportation Systems (ITSs). Vehicular communications allow information sharing between ... -
Channel modelling and characterization for visible light communications
Sarbazi, Elham (2014-08)Visible light communications (VLC) involve the dual use of illumination infrastructure (i.e., LEDs) for wireless communication purposes. Despite the growing academic and industrial interest, there is a lack of realistic ... -
Coded continuous phase modulation for tactical communications
Foruhandeh, Mahsa (2014-08)Satisfying the various demands of tactical transceivers is one the common challenges in military communications. Different modulation, coding and spread spectrum techniques are needed to meet these requirements. Although ... -
Comparison of text-independent speaker verification systems in a multi-class, semi-automatic detection scenario
Yeşil, Fatih (2013-06)Performance of the speaker veri cation systems is typically measured based on their binary decision accuracy. Soft outputs of the systems are used mostly for calibration or multiple system combination purposes. However, ... -
Cross-lingual speaker adaptation for statistical speech synthesis using limited data
Sarfjoo, Seyyed Saeed; Demiroğlu, Cenk (Interspeech, 2016)Cross-lingual speaker adaptation with limited adaptation data has many applications such as use in speech-to-speech translation systems. Here, we focus on cross-lingual adaptation for statistical speech synthesis (SSS) ... -
Deep learning-based expressive speech synthesis: a systematic review of approaches, challenges, and resources
Barakat, Huda Mohammed Mohammed; Turk, O.; Demiroğlu, Cenk (Springer, 2024-02-12)Speech synthesis has made significant strides thanks to the transition from machine learning to deep learning models. Contemporary text-to-speech (TTS) models possess the capability to generate speech of exceptionally high ... -
Deep learning-based speaker-adaptive postfiltering with limited adaptation data for embedded text-to-speech synthesis systems
Eren, Eray; Demiroğlu, Cenk (Elsevier, 2023-06)End-to-end (e2e) speech synthesis systems have become popular with the recent introduction of text-to-spectrogram conversion systems, such as Tacotron, that use encoder–decoder-based neural architectures. Even though those ... -
Depression screening from voice samples of patients affected by parkinson’s disease
Özkanca, Yasin Serdar; Öztürk, M. G.; Ekmekci, Merve Nur; Atkins, D. C.; Demiroğlu, Cenk; Ghomi, R. H. (S. Karger AG, 2019-05-01)Depression is a common mental health problem leading to significant disability worldwide. It is not only common but also commonly co-occurs with other mental and neurological illnesses. Parkinson's disease (PD) gives rise ... -
Depression-level assessment from multi-lingual conversational speech data using acoustic and text features
Demiroğlu, Cenk; Besirli, A.; Özkanca, Yasin Sedar; Celik, S. (Springer Nature, 2020-11-17)Depression is a widespread mental health problem around the world with a significant burden on economies. Its early diagnosis and treatment are critical to reduce the costs and even save lives. One key aspect to achieve ... -
Design and quantitative analysis of a pulse wave velocity blood-pressure measurement subsystem with multiple-subject controlled experiments
Erkurşun, Burcu (2018-08)The main purpose of this study is to perform the pulse wave velocity (PWV) measurements with a new noninvasive optoelectronic continuous-time wearable sensor design and analyze the quantitative relation between the reference ... -
Detection of Alzheimer's disease using prosodic cues in conversational speech
Khodabakhsh, Ali; Kuşçuoğlu, Serhan; Demiroğlu, Cenk (IEEE, 2014)Automatic diagnosis of the Alzheimer's disease as well as monitoring of the diagnosed patients can make significant economic impact on societies. We investigated an automatic diagnosis approach through the use of speech ... -
Developing session-based personalized accommodation recommender system by using LSTM
Can, Y. S.; Erkut, H.; Giritli, E. B.; Kutluay, H.; Buyukoguz, K.; Demiroğlu, Cenk (IEEE, 2022)Tourism sector has been transformed by the advances in the Internet technology. Users can search for information and can select their destination from various alternatives by themselves, which brings the need for personal ... -
Development of the calibration scheme and system integration of the Ozyegin biopsy robot (OBR)
Ahmad, Mirza Awais (2016-08)Imaging systems can fail to visualize cancerous tissues for proper diagnosis. Needle based procedures, like biopsies, increase the chances of accurate diagnosis of tumors. These procedures also have applications in minimally ...
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