Publications
Chosen filters:
Chosen filters:
Design Strategies for Narrow and Broadband Noise and Vibration Reduction through Distributed Resonators KU Leuven
Environmental as well as ecological requirements combined with the drive for efficiency have given rise to the introduction of lightweight designs. Nonetheless, their resultant increased stiffness-to-mass ratio often leads to a poor noise and vibration insulation performance. Given the well-known shortcomings of classical noise control measures, thus, their mass and/or volume, novel solutions are pursued. In this context, distributed ...
Distributed Signal Processing Algorithms for Combined Noise Reduction and Acoustic Echo and Feedback Cancellation KU Leuven
The quality of a speech signal recorded through multiple microphones can be compromised by various undesired signals, including noise and reverberation, leading to diminished intelligibility. Some of these undesired signals may be generated by loudspeakers within the same acoustic environment, potentially generating acoustic echoes and/or feedback. Multi-microphone speech enhancement systems aim at suppressing or canceling these interference ...
Reduced-bandwith and distributed MWF-based noise reduction algorithms for binaural hearing aids KU Leuven
In a binaural hearing aid system, output signals need to be generated for the left and the right ear. Using the binaural multichannel Wiener filter (MWF), which exploits all microphone signals from both hearing aids, a significant reduction of background noise can be achieved. However, due to power and bandwidth limitations of the binaural link, it is typically not possible to transmit all microphone signals between the hearing aids. To limit ...
Robust distributed noise reduction in hearing aids with external acoustic sensor nodes KU Leuven
In this paper, the benefit of using external acoustic sensor nodes for noise reduction in hearing aids is demonstrated in a simulated acoustic scenario with multiple sound sources. A distributed adaptive node-specific signal estimation (DANSE) algorithm, that has a reduced communication bandwidth and computational load, is evaluated. Batch-mode simulations compare the noise reduction performance of a centralized multi-channel Wiener filtering ...
Accounting for quantization noise in online correlation noise estimation for distributed video coding Ghent University
In Distributed Video Coding (DVC), compression is achieved by exploiting correlation between frames at the decoder, instead of at the encoder. More specifically, the decoder uses already decoded frames to generate side information Y for each Wyner-Ziv frame X, and corrects errors in Y using error correcting bits received from the encoder. For efficient use of these bits, the decoder needs information about the correlation between X available at ...
Binaural noise cue preservation in a binaural noise reduction system with a remote microphone signal KU Leuven
© 2016 IEEE. A general binaural noise reduction system is considered that employs the multichannelWiener filter with partial noise estimation (MWF?) allowing for an explicit tradeoff between noise reduction and binaural noise cue preservation. In this paper, it is assumed that along with the general binaural system, a remote microphone signal with a high input signal-to-noise ratio (SNR) is available for inclusion in theMWF?. The use of this ...
Cooperative integrated noise reduction and node-specific direction-of-arrival estimation in a fully connected wireless acoustic sensor network KU Leuven
© 2014 Elsevier B.V. In this paper, we consider cooperative node-specific direction-of-arrival (DOA) estimation in a fully connected wireless acoustic sensor network (WASN). We consider a scenario where each node is equipped with a local microphone array with a known geometry, but where the position of the nodes, as well as their relative geometry and hence the between-nodes signal coherence model is unknown. The local array geometry in each ...
Reduction of noise levels in sport halls by geometrical optimization KU Leuven
The acoustical situation in sport halls depends on their geometrical properties such as their volume and shape, on the amount and distribution of sound absorption, and on the performed sport activity. This article analyses the possibilities for noise reduction in shoebox shaped halls, given a certain degree of sound absorption. A parameter study was performed for two halls with different volume and dimensions, with special focus on the influence ...