Conference papers

Gerald Schuller: "Ultra Low Delay Audio Source Separation Using Zeroth-Order Optimization"
2023 IEEE Statistical Signal Processing Workshop (SSP) (02-05 July 2023), Hanoi, Vietnam.

Results: 91
Created on: Thu, 28 Mar 2024 23:13:58 +0100 in 0.1048 sec


Doser, Adele B.; Schuller, Gerald
Time/frequency techniques for signal feature detection. - In: Conference record of the Thirty-Third Asilomar Conference on Signals, Systems & Computers, (1999), S. 452-456

https://doi.org/10.1109/ACSSC.1999.832370
Schuller, Gerald; Sweldens, Wim
Filter bank design using nilpotent matrices. - In: IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, 1999, (1999), S. 51-54

https://doi.org/10.1109/ASPAA.1999.810847
Schuller, Gerald; Sweldens, Wim
Modulated filter bank design with nilpotent matrices. - In: Wavelet applications in signal and image processing VII, (1999), S. 284-294

Schuller, Gerald; Karp, Tanja
Causal FIR filter banks with arbitrary system delay. - In: 1998 IEEE DSP Workshop, Bryce Canyon, Utah, August 9 - 12, 1998, (1998), insges. 4 S.

A design method for causal bi-orthogonal PR FIR M-band filter banks is described, which allows an explicit control over system delay, independent of the filter length, with the lowest possible delay equal to the blocking delay of M? 1 samples. The design method is very general and can be applied to non-uniform filter banks but also treats uniform modulated filter banks as a special case.



Karp, Tanja; Mertins, Alfred; Schuller, Gerald
Recent trends in the design of biorthogonal modulated filter banks. - In: Transforms and filter banks, (1998), S. 315-335

Biorthogonal modulated filter banks, when compared to paraunitary ones, provide the advantage that the overall system delay can be chosen independently of the filter length, thus resulting in low delay filter banks. They have recently been studied by several authors. In the paper, we connect different design methods (quadratic constrained least-squares optimization, cascade of sparse self-inverse matrices) and describe advantages of the a factorization into Zero-Delay and Maximum-Delay matrices (structureinherent perfect reconstruction, no DC leakage of the filter bank, low implementation cost).



Schuller, Gerald;
Time-varying filter banks with low delay for audio coding. - In: 105th convention, (1998), Paper 4809

Schuller, Gerald;
Time-varying filter banks with variable system delay. - In: 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing, (1997), S. 2469-2472

A new filter structure and design method for time-varying cosine modulated FIR filter banks with critical sampling, perfect reconstruction, and an efficient implementation is presented. The proposed filter banks have an arbitrary system delay which can be chosen in the design process and is independent of the arbitrary filter length, hence making a low system delay possible. The time variation includes changing the number of bands and/or filters during signal processing while maintaining critical sampling and perfect reconstruction. The transition windows can be overlapping, which improves the frequency responses. It is based on a factorization of the polyphase matrices into a cascade of 2 types of simple matrices.



https://doi.org/10.1109/ICASSP.1997.599577
Schuller, Gerald;
A new factorization and structure for cosine modulated filter banks with variable system delay. - In: Conference record of the Thirtieth Asilomar Conference on Signals, Systems & Computers, (1997), S. 1310-1314

A new design method for biorthogonal modulated filter banks is presented. It is based on a cascade of simple matrices, and it has some properties that have not been reported before. It represents filter banks with arbitrary overall system delay and filter length, it is shown that almost all cosine modulated filter banks can be described by this structure, and that it leads to a more efficient implementation than previous structures. Imposing certain symmetries on the matrices can be used to design low delay filter banks with identical (except for the sign) baseband impulse responses for the analysis and synthesis filter bank.



https://doi.org/10.1109/ACSSC.1996.599159
Schuller, Gerald; Smith, Mark J. T.
A new algorithm for efficient low delay filter bank design. - In: ICASSP '95, (1995), S. 1472-1475

Historically, exact reconstruction FIR filter banks have had system delays of L-1, where L is the length of the analysis and synthesis filters. Recently it was shown that the system delay could be made less than L-1, which is attractive in applications like speech coding where excessive delays are annoying. In this paper, a formulation and new design algorithm are introduced for two-band low-delay filter banks. The formulation is related to that of two-band lattice filter banks and provides a broad range of design flexibility within a compact framework. Both exact reconstruction and specified system delay are guaranteed by the structure of the framework.



https://doi.org/10.1109/ICASSP.1995.480562
Schuller, Gerald;
A low-delay filter bank for audio coding with reduced pre-echoes. - In: 99th convention, (1995), Paper 4088