Research Projects

2018 - 2021
Cross-layer prosody models for conversational speech (FWF Elise Richter Grant V638-N33)
With currently available Automatic Speech Recognition (ASR) systems, very good recognition performance can be obtained for read speech (word accuracies of 100 – 90%), but not for...
2016 - 2020
Resource-Efficient Deep Models for Embedded Systems

Deep representation learning is one of the main factors for the recent performance boost in many image, signal and speech processing problems. This is particularly true when having big amounts of...

2015 - 2019
Speech signal processing Lab (research group)

Applied Digital signal processing for speech and audio applications (demo webpage!)...

2016 - 2019
Dependable Wireless Communication and Localization

Wireless communication and localization are key components of the envisioned "Internet-of-Things". However, wireless technologies suffer from physical and man-made impairments, e.g.,...

2017 - 2019
KONDE - Kompetenznetzwerk Digitale Edition

In this project, which is funded by Higher Education Structural Funds (Hochschulraumstrukturmittel), seven university partners and three other institutions deal with theoretical and practical...

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2015 - 2018
HumanEVoice -- The Bionic Voice (FFG 849824)

The focus of HumanEVoice is the exploration of possibilities for electronic speech aids. A speech aid replaces the function of the vocal cords by generating an excitation signal by an external...

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2015 - 2018
Learning of Bayesian Network Classi ers and Sum- Product Networks

Discriminative learning of Bayesian networks (BNs) for classi fication tasks is often bene ficial
compared to generative learning. This is particularly true in case of model mismatch, i.e....

2017 - 2018
Monitoring of Mars Isolation Crew by Speech Processing and Psychological Content Analysis (MIMIC)


2017 - 2018
Evaluation tool for plain language

More than 50% of adults in Germany have difficulties to fully comprehend information ditributed by government authorities and companies.  This lack of reading abilites excludes people from...

2012 - 2017
Cross-layer pronunciation modeling for conversational speech (FWF Hertha Firnberg Program T572)

The Problem   Automatic speech recognition (ASR) systems were originally...

2014 - 2017
REFlex - RFID Real-Time Localization for Flexible Production Environments

The project investigates a localization system of passive RFID tags for an intelligent process control system. The real-time tracking of components, tools, and products is a key technology...

2014 - 2017
ENTRANCE - Enhanced Radio Transmitter and Coexistence Exploration

The project ENTRANCE has the goal to investigate signal processing and system design methods that enable the design of flexible and power-efficient radio transmitters.

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Propabilistc Graphical Models for Signal Analysis

Siemens announced in cooperation with the SPSC Lab a Master Thesis in the area of signal analysis using pattern recognition and machine learning techniqes. For details, we refer to the enclosed...

2013 - 2016
Probabilistic Graphical Models for Time-Series Signal Mixtures
Robustness against reverberation, noise, and interfering audio signals is one of the grand challenges in speech recognition, speech understanding, and audio analysis technology. One avenue to...
2014 - 2016
Computerunterstützte akustische Diagnostik thorakaler Erkrankungen



2014 - 2016
CAPA - Psychological Status Monitoring by Content Analysis and Acoustic-Phonetic Analysis of Crew Talks and Video Diaries

The project aims enrich the available psychological knowledge through phonological and content analysis a variety of recorded speech samples collected at regular periods from the over-wintering...

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Concordia Station
2015 - 2016
MINT - Multipath-assisted Indoor Navigation and Tracking

The project MINT investigates an RF-based localization and tracking system intended for indoor use. The method to be investigated, previously proposed by our group, exploits...

Signals over some positions with channel estimation
Predicted uncertainty of position using measurements
2009 - 2015

Seit 2009 werden zum interdisziplinären Thema Klassenraumakustik verschiedene Arbeiten durchgeführt mit dem Ziel, den Einfluss der Raumakustik in Klassenzimmern auf den Schulalltag zu...

2011 - 2014
Speaking Aid for Laryngectomized People

Some people, after suffering voice problems over a longer period of time, are confronted with the diagnosis of laryngeal cancer. While at an early stage there is a good chance of healing and being...

2012 - 2014
DIRHA - Distant-speech Interaction for Robust Home Applications

The DIRHA project addresses the development of voice-enabled automated home environments based on distant-speech interaction in different languages. A distributed microphone network is installed...

DIRHA Setting
2011 - 2014
Signal and Information Processing in Science and Engineering - Nonlinear Dynamic and Machine Learning (SISE-NDML-II) FWF S10610-N13

The modeling, measurement, transmission, and processing of information-bearing data and signals are key constituents of any modern technical system. Driven by scalability and reliability...

2010 - 2013
Discriminative Learning of Graphical Models with Application to Speech and Image Processing

Graphical models have become the method of choice for representation of uncertainty in machine learning. Two research issues are currently of major interest in the scientific community: First,...

2010 - 2013
NOFDM - Noncoherent Orthogonal Frequency Division Multiplexing

The aim of this project is the demonstration, validation, and evaluation of a wireless multicarrier transmission scheme that employs a novel noncoherent receiver. The receiver supports energy...

Architecture of the noncoherent multichannel autocorrelation receiver
2010 - 2013
DRAGON - Design methods for Radio Architectures GOing Nanoscale

The main idea of the DRAGON project is to research and use new design methodologies and architectural innovations, based on reconfigurability and state-of-the-art digital CMOS technology, in...

2008 - 2013
AAP-COMET Advanced Audio Processing (FFG 815085)

 The intention of the project is to join research activities in the field of advanced audio processing. The central goal is to strengthen and augment the cooperation between academia...

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2011 - 2013
Lobster - Location Based Services für Menschenstromanalyse in Notfall- und Krisensituationen zur Unterstützung von Ersthelfern

 Within the project LOBSTER a system for analysing escaping groups of people in crisis situations in public buildings/constructions is developed. For the localisation and the analysis...

2011 - 2012
Signal authentication utilizing a dual frequency software-based GNSS receiver for trusted positioning (SoftGNSStrusted)

Today the accurate and safe determination of position and time information using GNSS has become an essential part in our society.  Unfortunately, the more valueable a resource becomes to...

2010 - 2012
GreenPArK - Green Power Amplifiers (Zukunftsfonds Steiermark - PN 5061)

 Das Projekt GreenPArk instrumentalisiert die digitale Signalverarbeitung zur Steigerung des Wirkungsgrades von HF-Leistungsverstärkern in Mobilfunk-Basisstationen. Dazu werden...

2007 - 2011
PARIS - Position Aware RFID Systems

The area of passive UHF RFID is mostly a niche application for tracking of small goods. Accurate localization of tagged objects could be beneficial in numerous applications, such as warehouse and...

2006 - 2011
COST 2103 - Advanced Voice Function Assessment

The main objective of the Action is to combine previously unexploited techniques with new theoretical developments to improve the assessment of voice for as many European languages as possible,...

2008 - 2011
Signal and Information Processing in Science and Engineering - Nonlinear Dynamic and Machine Learning (SISE-NDML-I) FWF S10604-N13

Verteilte Signale und Daten werden in Zukunft von zentraler Bedeutung für viele Bereiche des täglichen Lebens sein. Vernetzte Sensoren und verteilte Daten erlauben ein verbessertes...

2008 - 2010
COMAR - Communication and Positioning Methods in Active RFID

The complexity of RFID systems has been increasing continuously. New applications are emerging, where the tags are extended by arbitrary sensors, the collection of data from low class tags, the...

2007 - 2010
Discriminative Learning of Bayesian Network Classifiers

Over the last decade, Bayesian networks have become the method of choice for representation of uncertainty in machine learning. Bayesian networks are used in many research areas such as...

2006 - 2010
Singel Channel Source Separation

The here presented studies were carried out within the basic project Robust, part of COAST. Robust deals with robust speech pre-processing for...

2006 - 2010
ROBUST - Signal processing for robust speech quality (COAST)

A notorious challenge for automatic speech recognition is the significant decrease of recognition rates encountered under non-ideal acoustic environments. The presence of background noise or of...

2008 - 2010
ASR for Telehealth Applications (COAST)

Within this project the use of advanced speech recognition technology for telehealth or telecare applications is evaluated. State of the art video-care systems, e.g. BETAVISTA from Zydacron...

2006 - 2010
ALSO - Automatic learning and specific adaptation (COAST - Competence Network for Advanced Speech Technologies)

The main aim of the project ALSO is to expand speech recognition systems toward a speaker and paragraph-specific parametrization and automatic adaptation (of parameters), so that recognition...

2009 - 2010
SoftGNSS 2-A dual frequency software-based GNSS receiver

The main objective of the SoftGNSS project is the development of a software defined Global Positioning System (GPS) receiver whose performance is enhanced by a dual-frequency approach. The...

2004 - 2010
Speech Watermarking for Security Applications

This poject explores security enhanced speaker verification and identification systems based on speech signal watermarking. The goal is to detect several situations where a playback speech,...

2003 - 2009
Speech Watermarking for Air Traffic Control Communication

The speech communication channel for flight control between Pilot and Tower is used to transmit additional data such as a flight number. The data should be available at the screen of the flight...

2002 - 2009
CD-Laboratory for Nonlinear Signal Processing

The Christian Doppler Laboratory for Nonlinear Signal Processing addresses fundamental research questions arising from signal processing applications which are challenging due to their...

2002 - 2009
CD-Laboratory for Nonlinear Signal Processing, Module A: Nonlinear Signal Processing in xDSL Systems

The research is concerned with the identification and inversion of weak nonlinear behaviour occurring in analog integrated circuits for ADSL applications. The nonlinear behaviour induced by...

2002 - 2009
CD-Laboratory for Nonlinear Signal Processing, Module B: Digital Correction of Analog Signal Processing Errors in Fast Analog-to-Digital Converters (ADC)

The goal of the project is the digital correction of analog signal processing errors in fast analog-to-digital converters. Through this digital correction of errors, costs for production of...

2003 - 2009
CD-Laboratory for Nonlinear Signal Processing, Module C: Digital Predistortion of RF-Power Amplifiers for UMTS (Universal Mobile Telecommunications System) Base-Stations

In recent years the rapid growth of the number of users in mobile communication networks led to the development of third generation standards like UMTS. The modulation and the multiple user...

2006 - 2009
CD-Laboratory for Nonlinear Signal Processing, Module D: Digital synthesizers for gigahertz-range fast frequency-hopping systems

High-frequency fast frequency-hopping systems require frequency synthesizers to provide multi-gigahertz clocks with a band switching time on the order of few tens of nanoseconds, posing...

2006 - 2009
CD-Laboratory for Nonlinear Signal Processing, Module F: Digital synthesizers for gigahertz-range fast frequency-hopping systems (Phase-Locked-Loop - PLL)

High-frequency fast frequency-hopping systems require frequency synthesizers to provide multi-gigahertz clocks with a band switching time on the order of few tens of nanoseconds, posing...

2000 - 2009
Nonlinear Prediction of Mobile-Radio Fading Processes

The rapid time variation of mobile radio channels is often modeled as a random process with second order moments reflecting vehicle speed, bandwidth and the scattering environment. These...

2005 - 2009
PROACT - Programme for Advanced Contactless Technology

PROACT has the short-term goal to stir increased interest and cooperation in the research area of contactless identification technology. The medium-term goal is to establish Graz as a center...

2004 - 2008
EUROPCOM - Emergency Ultra-Wideband Radio for Positioning and Communications

In emergency situations, particularly within smoke filled, partially or completely collapsed large buildings, communications with rescue personnel can be difficult. Safety & co-ordination of...

2005 - 2008
CD-Laboratory for Nonlinear Signal Processing, Module E: Ultra-Wideband (UWB) Communications

Ultra-Wideband (UWB) communications is an emerging new technology for high speed data transmission systems that is expected to enable low-cost and low-power devices. Instead of a modulated...

2006 - 2008
OneVoice - Speech Enhancement for Dictation Systems

Speech recording is a common practice in daily professional activities, such as for lawyers, physicians, journalists and architects, among others. The combination of dictation systems with...

2006 - 2007
Perceptual-Domain Coding of Speech and Audio

The goal of the proposed research is the development of a new and efficient source coder for speech and audio signals based on the approach of coding in the perceptual domain. In this...

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2005 - 2007
SonEnvir - Eine Sonifikationsumgebung für wissenschaftliche Daten

 SonEnvir ist ein vom steirischen Zukunftsfond gefördertes Forschungsprojekt mit dem Ziel Sonifikation und ihre Anwendungen in verschiedenen wissenschaftlichen Disziplinen zu...

2003 - 2006
Description and Classification of 3-D Surfaces

In steel industry there is an increasing demand for automatic inspection systems to control the quality of products. Through the economic pressure on the supplier to industry the inspection of a...

2005 - 2006
SPARC - Semantic and Phonetic Automatic ReConstruction of Medical Dictations

The SPARC (Semantic Phonetic Automatic ReConstruction) project aims at automatically reconstructing the original...

2004 - 2006
SNOW - Services for NOmadic Workers

The SNOW project aims to support nomadic workers in their performance of maintenance and production tasks. It is developing a multimodal interface enabling workers to interactively access...

2005 - 2006
MISTRAL - Measurable intelligent and secure semantic extraction and retrieval of multimedia data

Multimedia data has a rich and complex structure in terms of inter- and intra-document references and can be an extremely valuable source of information. However, this potential is severely...

2005 - 2006
Efficient I/A Representation of Nonlinear Systems

Goal of the proposed research is the development of new efficient methods for the identification of the Input-output (i/o) behavior of nonlinear dynamical systems. The efficiency in terms of...

2001 - 2005
COST Action 277 - Nonlinear Speech Processing

The main objective of this Action is to improve the quality and capabilities of the voice services for telecommunication systems through the development of new nonlinear speech processing...

2002 - 2004
Shape Description and Analysis of Range Data for Surface Inspection Applications

In the steel industry there is an increasing demand for automatic inspection systems to control the quality of products. Through the economic pressure on the supplier to the industry, the...

2001 - 2003
COMMIT Convergence in Multimedia Internet Transport

COMMIT is ftw.'s part of the EUREKA/Medea+ project INCA Integrated Copper Network Access (Medea+ project proposal number A106). Medea+ is a pan-European cooperation program to promote chip-...

Acoustic Signal Processing and Noise Analysis for the Localization of Leaks in Water Pipes

Loss of water due to leaks in pipes is a significant problem for communities in Austria and Southern Europe. Presently, such leaks are localized by noise measurement and auditory assessment...

2001 - 2002
Nonlinear Signal Processing for xDSL Systems

The research is concerned with the identification and inversion of weak nonlinear behaviour occurring in analogue integrated circuits for ADSL applications. The nonlinear behaviour induced...

Three-Dimensional Audio Interfaces for the Blind and Visually Impaired

The aim of the project is to develop a highly effective acoustic user interface for visually impaired and blind people. To improve the usability over commonly used "screen readers...

2000 - 2001
The Naturalness of Synthetic Speech

The COST 258 Action with the title "The Naturalness of Synthetic Speech" is concerned with the coordination of basic research of 34 laboratories dealing with text-to-speech...

Anthropomorphic Coding of Speech and Audio

Antropomorphic signal processing develops computational models of human communication modalities that emulate the physiological processes of their natural counterpart. Widely known examples...

Speech & More

Due to the increasing use of mobile phones and future integrated devices (GPRS, UMTS terminals), there is a growing need for mobile access to information services. Spoken language interfaces...

Broadband Wireless Communications

 The anticipated convergence of wireless communications and the internet demands for ever increasing data rates on radio air-interfaces for short range indoor as well as medium to...





Audio demonstration of wave files to be presented at show and tell accepted for INTERSPEECH 2013

Pejman Mowlaee, Mario Karou Watanabe and Rahim Saeidi