Name
Title | ||
|---|---|---|
Adaptive System Identification in the Short-Time Fourier Transform Domain Using Cross-Multiplicative Transfer Function Approximation |
Abstract | ||
|---|---|---|
In this paper, we introduce cross-multiplicative transfer function (CMTF) approximation for modeling linear systems in the short-time Fourier transform (STFT) domain. We assume that the transfer function can be represented by cross-multiplicative terms between distinct subbands. We investigate the influence of cross-terms on a system identifier implemented in the STFT domain and derive analytical relations between the noise level, data length, and number of cross-multiplicative terms, which are useful for system identification. As more data becomes available or as the noise level decreases, additional cross-terms should be considered and estimated to attain the minimal mean-square error (mse). A substantial improvement in performance is then achieved over the conventional multiplicative transfer function (MTF) approximation. Furthermore, we derive explicit expressions for the transient and steady-state mse performances obtained by adaptively estimating the cross-terms. As more cross-terms are estimated, a lower steady-state mse is achieved, but the algorithm then suffers from slower convergence. Experimental results validate the theoretical derivations and demonstrate the effectiveness of the proposed approach as applied to acoustic echo cancellation. |
Year | DOI | Venue |
|---|---|---|
2008 | 10.1109/TASL.2007.910789 | Audio, Speech, and Language Processing, IEEE Transactions |
Keywords | Field | DocType |
additional cross-terms,adaptive system identification,cross-multiplicative transfer function approximation,cross-multiplicative term,data length,transfer function,stft domain,conventional multiplicative transfer function,derive analytical relation,short-time fourier transform domain,lower steady-state mse,steady-state mse performance,cross-multiplicative transfer function,frequency domain analysis,linear systems,mean square error,identification,short time fourier transform,transfer functions,approximation theory,adaptive systems,signal to noise ratio,system identification,fourier transforms,adaptive filter,adaptive system,linear system,time frequency analysis,steady state | Frequency domain,Optical transfer function,Function approximation,Multiplicative function,Short-time Fourier transform,Fourier transform,Speech recognition,Transfer function,Time–frequency analysis,Mathematics | Journal |
Volume | Issue | ISSN |
16 | 1 | 1558-7916 |
Citations | PageRank | References |
14 | 0.77 | 22 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Avargel, Y. | 1 | 70 | 3.72 |
| Irun R. Cohen | 2 | 296 | 21.62 |