Department of Signal Processing and Acoustics
Acoustics and Audio Signal Processing group
The Acoustics and Audio Signal Processing group is the only university unit in Finland that focuses primarily on research and teaching of acoustics, speech, and sound processing.
The group was established in its current form in 1981. The activities were started several decades earlier as part of another unit at former TKK. The first professorship in acoustics was founded in 1986, and until the year 2002, four professorships had been founded.
The group has the best acoustic research facilities in Finland, such as a large anechoic chamber and a standard listening room. Research fields include, for example, applications of digital signal processing to acoustics, audio, speech communication technology, and music technology.
Recently, the main focus areas of research at the Acoustics and Audio Signal Processing group have been physical modeling of musical instruments, natural-sounding synthesis of music and speech, audio coding, perceptually-based audio processing, multi-channel and 3-D sound reproduction, analysis of speech production and its applications in brain research and medical engineering, and spectral modeling of speech.
Research Topics
- Audio Signal Processing Research Group
Wideband audio signal processing with emphasis on digital signal processing methodology. - Speech modelling and enhancement
Mathematical modelling of speech, its theory and applications in glottal inverse filtering and in speech transmission. - Voice Production Analysis
Analysis and parametrisation of the voice source in speech and singing, with application to occupational voice research and cognitive brain research. - Communication acoustics team: Spatial sound and psychoacoustics
Spatial sound reproduction and real and virtual acoustics. Psychoacoustics of spatial sound and musical instruments.
Research Teams and Projects
Spatial Sound Team
| Prof. Ville Pulkki (group leader) | |
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Audio Signal Processing Team
| Prof. Vesa Välimäki (group leader) | |
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Speech Analysis Team
| Prof. Paavo Alku (group leader) | |
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Speech Technology Team
| Prof. Unto K. Laine (group leader) | |
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Finished Projects
- SAME - Sound and Music for Everyone Everyday Everywhere Every Way
- Contact-ID: Identification of contact sounds
- COST-IC0601 SID - Sonic Interaction Design
- Computer Based Education
- VBAP - Vector Base Amplitude Panning
- eVikings II
- Mobile Augmented Reality Audio project
- STT Speech to Text (phonemic speech recognition)
- Tractor Noise Group
- DIVA - DIgital Virtual Acoustics
- 3-D Sound Group
- FAMbac Audio Coding Project
- HUTear - MATLAB Toolbox for Auditory Modeling
- Speech Technology for Hearing and Sight Impaired (PuTTePuh Project)
- Sinusoidal Coding of Generic Audio
- Sound Source Modeling
- Modeling of Small Room Acoustics
- Measurements in Small Cabins
- Design and Implementation of an Experimental Listening Test Software
- Information Prosesses in Speech Communication
- Fractional Delay Waveguide Filters
- Coding techniques for acoustic openings
- Audio restoration
- ALMA - Algorithms for the Modelling of Acoustic Interactions
- Analysis and Physical Modeling of Tanbur
- Waveguide Modeling of Plucked String Instruments
- HARPSY - HARPsichord SYnthesis
- Louder Kantele
- SARA - Spatial Audio and Room Acoustics
- Pythagoras - Graduate School of Music and Sound Research
- Control, Analysis, and Parametric Synthesis of Audio Signals
- COST-287 ConGAS - Gesture Controlled Audio Systems.
- S2S^2 - Sound to Sense, Sense to Sound
- MAPS (Modeling and Perception of Sound Sources)
- HILJA - Reduction of musical noise with silent drums