Geluidsnorm overschrijdingen door het wegverkeer in Delft: Een geodata onderzoek naar geluidsbelasting

In Nederland en in de stad Delft wordt geluidhinder door autowegen ervaren door bewoners. Dit kan leiden tot een verminderde gezondheid. Het doel van dit onderzoek is uitvinden waar de geluidsnorm wordt overschreden en hoe dit verminderd zou kunnen worden. Hiervoor is de volgende onderzoeksvraag opgesteld: Waar in Delft wordt de geluidsnorm voor...

SPLITTER: A data model and algorithm for detecting spectral lines and continuum emission of high-redshift galaxies using DESHIMA 2.0

We propose the Stationary spectrum Plus Low-rank Iterative TransmiTtance EstimatoR (SPLITTER) for removing wideband atmospheric noise from observations of high-redshift galaxies. This algorithm has specifically been developed for the DEep Spectroscopic HIgh-redshift MApper (DESHIMA) 2.0, a spectrometer that is designed to observe the waveband...

Make Some Noise Schiphol: A study on a parametric architectural strategy for the design of aircraft noise abatement landscape elements within cities

This research focuses on aircraft noise exposed urban spaces around Amsterdam Schiphol airport. In particular, a case site in Rijsenhout is studied, where a representation of the noise wave propagation due to refraction is performed. Subsequently, a series of landscape configurations regarding geometry are gradually tested through acoustic...

Binaural beam-forming with dominant cue preservation for hearing aids

For people with hearing impairment, it is important to have good speech intelligibility, while also being able to localise the sound sources. Many beam-forming algorithms for hearing aids have been proposed, that minimise the noise, in combination with spatial scene preservation of the target and the interferers. By constraining the spatial cues...

Total least squares method for the purpose of noise reduction in low-cost MRI images

MRI images are very useful for detecting diseases, as well as for the treatment of diseases. However, MRI scanners are usually too expensive for developing countries to purchase and maintain. Therefore, a less expensive scanner is being developed at Delft University of Technology and Leiden University Medical Center. Unfortunately, the images...

Pre-Amplifier and Noise Cancellation: For an Intelligibility-Enhancing Automatic Volume Control System

This Bachelor graduation project has the goal to create a device which is able of automatic volume control, to be used for enhancing speech intelligibility. To tackle the intelligibility of speech through Public Address Systems (PA Systems), an Intelligibility-Enhancing Automatic Volume Control system was proposed. The total system to be made...

Interferer selection for binaural cue preservation in joint binaural linearly constrained minimum variance beamforming

Spatial cues allow a listener to determine the direction sound is coming from. In addition, recognising spatially separated sound sources facilitate the listener to focus on specific sound sources. Because of this, preservation of spatial cues in multi-microphone hearing assistive devices is important to the listening experience and safety of...

The embodiment design of Prop panels, a ceiling solution for Graypants

This graduation project has been executed together with the company Graypants. Graypants is a Unites-stated based design label, well-known for their signature Scraplights collection: A series of pendant light fixtures constructed from recycled corrugated cardboard. Graypants has a clear focus on sustainability and the use of recycled materials....

Computational aeroacoustic analysis of trailing edge noise: A Direct Numerical Simulation using the Lattice Boltzmann Method

To investigate the mechanisms of wing trailing edge noise the aeroacoustic sound generation by a NACA 0018 has been computed with direct numerical simulations using the Lattice Boltzmann Method. Noise from the straight trailing edge wing is compared with the sound generated by a sawtooth serrated wing, which reduces the noise emission according...

Improved Lens Aberration Estimation Using Model-Based Filtering, Applied to Lithographic DUV Imaging Systems

In this thesis a model-based filter is developed to improve the estimates of the lens aberrations.

Re-sil(i)ence, aircraft noise abatement by the built environment in the vicinity of airports

The graduation research focusses on mitigations in the built environment abating aircraft noise which can used by urban planners, designers and policy makers operating in airport regions. Aircraft noise is an issue for airport regions as it forces building restrictions upon aircraft noise exposed areas (e.g. for Schiphol and the Amsterdam...

Being happier being quieter; reducing noise in the Intensive Care Unit through behavior change of staff

Noise reduction in the Intensive Care Unit (ICU) is an important goal as it impacts the health and comfort of the critically ill patients as well as the health and concentration of staff. Research shows that a considerable amount of noise produced in the ICU can be influenced by ICU staff. However, until now there are no interventions that...

Two Sensor Array Beamforming Algorithm

Nowadays, noise reduction in mobile communication is an increasingly important topic. This thesis discusses the possibilities of using beamforming with a two microphone array for smartphone applications. The goal of the project is to realise a beamforming algorithm for smartphones to improve on current Signal to Noise ratios attained by standard...