Browsing by Author "Demiroğlu, Cenk"
Now showing items 41-60 of 79
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An investigation into junction temperature of green and blue LEDs
Özlük, Burak (2019-01-04)As more advanced technologies are developed, energy considerations are becoming more serious. This is also true for lighting systems that play a crucial role in worldwide energy consumption consisting of 15% of general ... -
Konuşmacı aradeğerlemeli SMM tabanlı metinden konuşma sentezleme si̇stemi
Orhan, Mustafa Cem; Demiroğlu, Cenk (IEEE, 2011)Hidden Markov Model (HMM) based text-to-speech (TTS) systems offer many advantages compared to the concatenative approach. One of those advantages is the ability to interpolate between different speakers to generate new ... -
LIG at MediaEval 2015 multimodal person discovery in broadcast TV task
Budnik, M.; Safadi, B.; Besacier, L.; Quénot, G.; Khodabakhsh, Ali; Demiroğlu, Cenk (CEUR-WS, 2015)In this working notes paper the contribution of the LIG team (partnership between Univ. Grenoble Alpes and Ozyegin University) to the Multimodal Person Discovery in Broadcast TV task in MediaEval 2015 is presented. The ... -
Multi-hop hybrid FSO/RF communication systems
Kazemi, Hossein (2014-08)The reliability of free-space optical (FSO) links is severely restricted by weather-dependent atmospheric phenomena including absorption, scattering and turbulence. An efficient solution is to build hybrid links where a ... -
Multi-lingual depression-level assessment from conversational speech using acoustic and text features
Özkanca, Yasin Serdar (2018-12-19)Depression is a common mental health problem around the world with a large burden on economies, well-being, hence productivity, of individuals. Early diagnosis and detection of depression can aid treatment, but diagnosis ... -
Multi-lingual depression-level assessment from conversational speech using acoustic and text features
Özkanca, Yasin Serdar; Demiroğlu, Cenk; Besirli, A.; Çelik, S. (International Speech Communication Association, 2018)Depression is a common mental health problem around the world with a large burden on economies, well-being, hence productivity, of individuals. Its early diagnosis and treatment are critical to reduce the costs and even ... -
NatiQ: An end-to-end text-to-speech system for arabic
Abdelali, A.; Durrani, N.; Demiroğlu, Cenk; Dalvi, F.; Mubarak, H.; Darwish, K. (Association for Computational Linguistics (ACL), 2022)NatiQ is end-to-end text-to-speech system for Arabic. Our speech synthesizer uses an encoder-decoder architecture with attention. We used both tacotron-based models (tacotron-1 and tacotron-2) and the faster transformer ... -
Natural language features for detection of Alzheimer's disease in conversational speech
Khodabakhsh, Ali; Kuşçuoğlu, Serhan; Demiroğlu, Cenk (IEEE, 2014)Automatic monitoring of the patients with Alzheimer's disease and diagnosis of the disease in early stages can have a significant impact on the society. Here, we investigate an automatic diagnosis approach through the use ... -
Nearest neighbor approach in speaker adaptation for HMM-based speech synthesis
Mohammadi, Amir; Demiroğlu, Cenk (IEEE, 2013)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 ... -
OCR-aided person annotation and label propagation for speaker modeling in TV shows
Budnik, M.; Besacier, L.; Khodabakhsh, Ali; Demiroğlu, Cenk (IEEE, 2016)In this paper, we present an approach for minimizing human effort in manual speaker annotation. Label propagation is used at each iteration of an active learning cycle. More precisely, a selection strategy for choosing the ... -
On the correlation of psychoacoustic metrics with mushra-based subjective sound quality perception for televisions
İşlek, Çağlar (2019-08-09)Even though the loudspeaker technologies used in televisions (TVs) and objective sound quality assessment techniques had continuously advanced over the years, the literature on automatic sound quality assessment in the TV ... -
ÖZÜ konuşmacı doğrulama sisteminin çok sınıflı senaryoda NIST 2010 veritabanı ile başarımı
Yeşil, Fatih; Demiroğlu, Cenk (IEEE, 2011)Performance of the speaker verification systems is typically measured based on their binary decision accuracy. However, in speaker verification applications where close to %100 accuracy is required, such as the systems ... -
Parkinson’s disease diagnosis using machine learning and voice
Wroge, T. J.; Özkanca, Yasin Serdar; Demiroğlu, Cenk; Si, D.; Atkins, D. C.; Ghomi, R. H. (IEEE, 2018)Biomarkers derived from human voice can offer in-sight into neurological disorders, such as Parkinson's disease (PD), because of their underlying cognitive and neuromuscular function. PD is a progressive neurodegenerative ... -
Performance analysis of multi-relay free space optical communication systems
Mostaani, Zohreh (2015-01)Free space optical (FSO) communication has attracted a great attention in recent years because of their high bandwidth capacity in unregulated spectrum which makes them a cost-effective and easy-to-install alternative to ... -
Performance analysis of multiuser free space optical communications
Zhalehpour, Sasan (2014-08)Terrestrial Free Space Optical (FSO) communications involve using optical beams to carry information through atmospheric channels between two points. Unlike radio frequency (RF) communications, FSO systems are not burdened ... -
Performance evaluation and experimental verification of vehicular visible light communication
Araç geliştirme, gelecekteki bazı uygulamalarını desteklemek için büyük ölçüde veri iletişimine aktarır. Araç müfrezesi ve otonom araçlar (AV), bu on yılda ticari olarak temin edilebilecek uygulamalardan bazılarıdır. Bu ... -
Performance of the OZU speaker verification systems with the NIST SRE 2010 data in a multi-class scenario
Yeşil, Fatih; Demiroğlu, Cenk (IEEE, 2012)Konuşmacı doğrulama sistemlerinin başarımı tipik olarak ikili karar mekanizmasına dayanır. Yine de finans şirketlerinin çağrı merkezi gibi 100%’ e yakın kesinlik gerektiren uygulamalarda var olan sistemlerin ikili kararlarına ... -
Postprocessing synthetic speech with a complex cepstrum vocoder for spoofing phase-based synthetic speech detectors
Demiroğlu, Cenk; Buyuk, O.; Khodabakhsh, Ali; Maia, R. (IEEE, 2017-06)State-of-the-art speaker verification systems are vulnerable to spoofing attacks. To address the issue, high-performance synthetic speech detectors (SSDs) for existing spoofing methods have been proposed. Phase-based SSDs ... -
Relay-assisted OFDM-based visible light communications
Narmanlıoğlu, Ömer (2016-08)In this study, a relay-assisted visible light communication (VLC) system where an intermediate light source cooperates with the main light source is investigated. Specifically, two light sources in an office space; one is ... -
Safety test procedures, standards and results for Electric Bike Battery
Recently, battery project studies have been increasing worldwide. Companies carrying out these projects must have their products checked for design safety and must obtain test approval reports in order to release their ...
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