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Brümmer, N. (author), Burget, L. (author), Černocký, J.H. (author), Glembek, O. (author), Grézl, F. (author), Karafiát, M. (author), van Leeuwen, D.A. (author), Matějka, P. (author), Schwarz, P. (author), Strasheim, A. (author), TNO Defensie en Veiligheid (author)
This paper describes and discusses the "STBU" speaker recognition system, which performed well in the NIST Speaker Recognition Evaluation 2006 (SRE). STBU is a consortium of four partners: Spescom DataVoice (Stellenbosch, South Africa), TNO (Soesterberg, The Netherlands), BUT (Brno, Czech Republic), and the University of Stellenbosch ...
article 2007
document
Schrader, F. (author), Schaap, M. (author), Zöll, U. (author), Kranenburg, R. (author), Brümmer, C. (author)
Long-term monitoring stations for atmospheric pollutants are often equipped with low-resolution concentration samplers. In this study, we analyse the errors associated with using monthly average ammonia concentrations as input variables for bidirectional biosphere-atmosphere exchange models, which are commonly used to estimate dry deposition...
article 2018
document
Hensen, A. (author), Erisman, J.W. (author), Wichink Kruit, R.J. (author), Schräder, F. (author), Brümmer, C. (author), | Flechard, C.R. (author), van Zanten, M.C. (author), Zöll, U. (author)
Abstract. The accurate representation of bidirectional ammonia (NH3/ biosphere–atmosphere exchange is an important part of modern air quality models. However, the cuticular(or external leaf surface) pathway, as well as other non-stomatal ecosystem surfaces, still pose a major challenge to translating our knowledge into models. Dynamic...
article 2016
document
van Leeuwen, D.A. (author), Brümmer, N. (author), TNO Defensie en Veiligheid (author)
In the evaluation of speaker recognition systems - an important part of speaker classification [1], the trade-off between missed speakers and false alarms has always been an important diagnostic tool. NIST has defined the task of speaker detection with the associated Detection Cost Function (DCF) to evaluate performance, and introduced the DET...
conference paper 2007
document
van Leeuwen, D.A. (author), Brümmer, Niko (author), TNO Defensie en Veiligheid (author)
This paper describes two new approaches to spoken language recognition. These were both successfully applied in the NIST 2005 Language Recognition Evaluation. The first approach extends the Gaussian Mixture Model technique with channel dependency, which results in actual detection costs (CDET) of 0.095 in NIST LRE-2005, and which should be...
conference paper 2006
document
Brümmer, Niko (author), van Leeuwen, D.A. (author), TNO Defensie en Veiligheid (author)
Recent publications have examined the topic of calibration of confidence scores in the field of (binary-hypothesis) speaker detection. We extend this topic to the case of multiple-hypothesis language recognition. We analyze the structure of multiple-hypothesis recognition problems to show that any such problem subsumes a multitude of derived sub...
conference paper 2006
document
Matějka, P. (author), Burget, L. (author), Schwarz, P. (author), Glembek, O. (author), Karafiát, M. (author), Grézl, F. (author), Černocký, J. (author), van Leeuwen, D.A. (author), Brümmer, N. (author), Strasheim, A. (author), TNO Defensie en Veiligheid (author)
This paper describes STBU 2006 speaker recognition system, which performed well in the NIST 2006 speaker recognition evaluation. STBU is consortium of 4 partners: Spescom Data Voice (South Africa), TNO (Netherlands), BUT (Czech Republic) and University of Stellenbosch (South Africa). The primary system is a combination of three main kinds of...
conference paper 2007
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