Projects
Digital signal processing for digital communication, audio- and speech signal processing KU Leuven
Marc Moonen supervises a research team of pre- and postdoctoral researchers performing research in digital signal processing algorithms design and evaluation, for digital communication and audio- and speech signal processing. Digital communication activities are targeted towards physical layer processing (e.g. equalization, multiple-access, interference/crosstalk cancellation and MIMO transmission techniques) and resource allocation, in ...
Speech Processing Techniques for Automatic Detection of Disorders in the Human Brain KU Leuven
Natural Language Processing (NLP) is the branch of artificial intelligence that allows computers to interpret and manipulate language. In this project, we apply NLP to spontaneous speech obtained in cognitively normal elderly persons and in patients who are in the early stages of Alzheimer's disease. We investigate to what extent NLP features of speech are related to individual brain properties: regional volume, functional connectivity and ...
Speech processing cues in children with cochlear implants KU Leuven
Despite the proven effectiveness of cochlear implants for audiological rehabilitation for children with bilateral profound sensorineural hearing loss, variability in performance is large in terms of audibility, speech perception and language processing. This research project aimed at providing a better understanding of the way speech-related acoustic cues are utilized in language processing by children with cochlear implants. The knowledge ...
Continual learning in speech processing KU Leuven
Deep neural networks have enabled a major leap forward in speech processing. However, we still observe a degradation in accuracy when deployed in new domains. This can be addressed through adaptation of the network on a limited set of in-domain data. Doing so will modify the weights in the network and will modify the performance for the domain(s) the network was trained on originally. Worst case, this leads to 'catastrophic forgetting' where ...
Per-Tone Equalization and Per-Tone Precoding for Speech and Audio Signal Processing KU Leuven
Per-tone equalization and per-tone precoding have been developed as suitable tools for digital subscriber line (DSL) transmission in highspeed digital modems. DSL adopts so-called discrete multi-tone transmission (DMT) as a modulation format, which is essentially a Fourier transform based transmultiplexing operation that has indeed been shown to allow for the additional per-tone processing. In this project per-tone equalization and per-tone ...
The role of auditory-motor speech processing and higher cognitive abilities in language acquisition Ghent University
Children appear to be better language learners than adults. The precise reason why remains unclear. Language learning is complex and involves unconsciously picking up statistical regularities from continuous streams of speech sounds, such as word boundaries or rules on word order. Our previous work shows that higher cognitive abilities interfere with statistical learning processes in adults. This provides a plausible first explanation for why ...
Per-Tone Equalization and Per-Tone Precoding for Speech and Audio Signal Processing KU Leuven
Per-tone equalization and per-tone precoding have been developed as a specific and valuable tool for digital communication, in particular for high-speed so-called DSL modems in telephony networks. DSL adopts a modulation format (DMT) that relies on a discrete Fourier transform based transmultiplexer structure and that allows for the efficient integration of per-tone processing. In this project, per-tone processing will be developed for a ...
A holistic approach to the design of integrated and distributed digital signal processing algorithms for audio and speech communication devices KU Leuven
Unravelling speech processing mechanisms in aphasia via EEG-based neural tracking and behavioral measures KU Leuven
After a stroke, about one third of the patients is faced with aphasia, a language disorder affecting speech comprehension and production. Persons with aphasia show very heterogeneous symptoms and vary in the degree to which each level of the speech processing chain, spectrotemporal, phonological or semantic processing, is affected. Although a precise diagnosis is vital for targeted intervention, behavioral testing can be very challenging due ...