| Paper ID | AUD-34.2 |
| Paper Title |
NOISE-ROBUST ADAPTATION CONTROL FOR SUPERVISED ACOUSTIC SYSTEM IDENTIFICATION EXPLOITING A NOISE DICTIONARY |
| Authors |
Thomas Haubner, Andreas Brendel, Mohamed Elminshawi, Walter Kellermann, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Germany |
| Session | AUD-34: Acoustic System Identification and Modeling |
| Location | Gather.Town |
| Session Time: | Friday, 11 June, 14:00 - 14:45 |
| Presentation Time: | Friday, 11 June, 14:00 - 14:45 |
| Presentation |
Poster
|
| Topic |
Audio and Acoustic Signal Processing: [AUD-SIRR] System Identification and Reverberation Reduction |
| IEEE Xplore Open Preview |
Click here to view in IEEE Xplore |
| Virtual Presentation |
Click here to watch in the Virtual Conference |
| Abstract |
We present a noise-robust adaptation control strategy for block-online supervised acoustic system identification by exploiting a noise dictionary. The proposed algorithm takes advantage of the pronounced spectral structure which characterizes many types of interfering noise signals. We model the noisy observations by a linear Gaussian Discrete Fourier Transform-domain state space model whose parameters are estimated by an online generalized Expectation-Maximization algorithm. Unlike all other state-of-the-art approaches we suggest to model the covariance matrix of the observation probability density function by a dictionary model. We propose to learn the noise dictionary from training data, which can be gathered either offline or online whenever the system is not excited, while we infer the activations continuously. The proposed algorithm represents a novel machine-learning based approach to noise-robust adaptation control which allows for faster convergence in applications characterized by high-level and non-stationary interfering noise signals and abrupt system changes. |
