| Conference |
| Type of Publication |
| A Wavelet Based Audio Denoiser |
| Title |
|
Florian Bömers
|
| Authors |
| IEEE International Conference on Multimedia and Expo
(ICME) 2001, pp.
145-148, Tokyo, Japan, August 2001 |
| Published in |
| This article discusses real-time denoising
algorithms for digital audio based on the Wavelet Transform.
White noise is located in all frequencies and is thus especially
hard to detect. We use the locality of the wavelet function to
single out the frequency domains of the signal itself and thereby
be able to denoise it. Perfect denoising is not possible: the
higher the threshold coefficient is set, the more noise is
detected, but the more the original signal is affected as well.
We have implemented a flexible framework for denoising that
includes hard and soft thresholding, different Wavelet
Transforms, and different treatment of the padding coefficients.
The presented denoiser is a real-time application that allows
direct subjective judgments of a parameter setting. An evaluation
will conclude the article. |
| Abstract |
Denoising, Wavelet, Digital Audio, Evaluation |
| Keywords |
| [PDF]
[BIB] [XML] |
| Downloads & Bib-Entries |
