Student Theses - Details

We encounter acoustic noise frequently in our everyday lifes, but passive hearing protection techniques are either not satisfactory or impracticable. In contrast, active noise cancellation (ANC) is especially suitable for reducing low frequency noise.

ANC can be used in a variety of applications, ranging from the reduction of industry noise or in-car applications to well-known ANC headphones.

Commercially available ANC headphones often apply a fixed-filter control strategy that is customized for a specific headphone. Advances in AD/DA converter technology, as well as the rising computational capabilities of DSPs allow for digital ANC system realizations and offer a large amount of flexibility.

Open topics in this area of research:

• Evaluation metrics for the assessment of ANC system performance
• Implementation of a real-time ANC system
• Characterization of noise and headphones using acoustic measurements

The focus of the thesis is chosen in close consultation and according to the interests of the candidate.