Wire Communications Laboratory (WCL),
Electrical & Computer Engineering Department
University of Patras, GR
Experience and Competence
The Wire Communications Laboratory (WCL) was established in 1970 in the
Electrical Engineering and Computer Technology Department (EECT) of the
University of Patras. It currently has a staff of approximately 40 researchers,
support personnel and post-graduate students and is housed in the new building
of the EECT Department at the campus in Rion/ Patras. The WCL is active
in three main areas with organised R&D teams: Telecommunications, Speech
& Natural Language Technology and Audio & Electroacoustics. Its
research activity is mainly application oriented. In the Speech & Natural
Language Technology area, R&D includes speech recognition and synthesis
for the Greek language in particular, speech coding and enhancement, linguistic
processing of texts, loudspeaker/room acoustics equalisation and psychoacoustics.
The WCL co-operates with Greek and foreign firms and is a partner in
several projects supported by the EEC, the Greek Ministry of Industry,
the Regional Administration, etc. WCL has participated in many projects:
some of the more recent are: DIALOGOS (EPET II) Improvement of man-machine
communication using linguistic technologies. (1995-1998), YPER: Digital
Audio Equalisation Methods for Loudspeaker Applications (1996-1998), SPEECH
DAT (LE-2 XXXX) (From 1996), IDAS (LE-38315): "Interactive,Telephone-based,
Directory Assistance Services" (from 1998), TMR SPHEAR: Speech and Hearing
Representations, (from 1997), SPEECHDAT-CAR (LE-8334): "Speech Data
Basis for Voice Driven Teleservices and Control in Automotive Environments"
Role in the Network
The Patras group role within the network is to contribute expertise in
the areas of Digital Signal Processing, perceptually-based acoustic signal
enhancement, room acoustics and reverberation analysis and modeling, de-reverberation
of signal and speech recognition.
In SPHEAR, Patras has collaborated closely with Bochum exchanging young
researchers who have progressed very satisfactorily for the completions
of their Ph.D theses, and established good relationships with most of the
HOARSE partners, with visits of young researchers to IDIAP, Sheffield and
Keele and collaboration with Daimler-Chrysler in the assessment of pre-processing
Principal research personnel, expertise and involvement
Dr George Kokkinakis (Professor) received the Diploma in Electrical Engineering
(Dipl.-Ing.) in 1961, the Doctor's Degree in Engineering (Dr.-Ing) in 1966
and the Diploma in Engineering Economics (Dipl.-Wirt.-Ing) in 1967, all
from the Technical University of Munich. His current activity in R&D,
includes the analysis, synthesis, recognition and linguistic processing
of the Greek language and the design and optimisation of telecom networks.
Dr John Mourjopoulos (Associate Professor) received a B.Sc. from Coventry
University (UK) in Combined Engineering in 1977, an M.Sc. in Acoustics
from Southampton University (UK) in1978 and a Ph.D. in Digital Signal Processing
and Acoustics from Southampton University (UK) in 1984. His current scientific
interests are in the areas of digital audio system equalisation, digital
audio amplification, audio coding, audio and speech enhancement, psychoacoustics
and hearing models.
Tsoukalas D.,Mourjopoulos J., Kokkinakis G., “Speech Enhancement based
on Audible Noise Suppression (ANS)”, IEEE Trans. Speech and Audio Proc.,
Vol.5, No.6, pp.497-514, Nov. 1997.
Hatziantoniou P., Mourjopoulos J., “Generalized Fractional Octave Smoothing
of Audio / Acoustic Responses”, Journal of the Audio Engineering Society,
Vol.48, No.4, pp.259-280, Apr.2000.