Measuring the performance of implemented multirate systems

Heinle, F.; Schuessler, H. W.

doi:10.1109/icassp.1996.550123

Cited by 5 publications

(3 citation statements)

References 1 publication

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“…In the critically subsampled case, the analysis and synthesis polyphase matrices for the DFT filter bank can be written with as in (21) and the diagonal matrix with elements as diag (42) diag (43) Here, denotes the DFT matrix and the the type-1 polyphase components of the analysis and synthesis prototype, respectively.…”

Section: E Relation To Dft Filter Banksmentioning

confidence: 99%

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Oversampled cosine-modulated filter banks with arbitrary system delay

Kliewer

Mertins

1998

IEEE Trans. Signal Process.

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Abstract-In this paper, design methods for perfect reconstruction (PR) oversampled cosine-modulated filter banks with integer oversampling factors and arbitrary delay are presented. The system delay, which is an important parameter in realtime applications, can be chosen independently of the prototype lengths. Oversampling gives us additional freedom in the filter design process, which can be exploited to find FIR PR prototypes for oversampled filter banks with much higher stopband attenuations than for critically subsampled filter banks. It is shown that for a given analysis prototype, the PR synthesis prototype is not unique. The complete set of solutions is discussed in terms of the nullspace of a matrix operator. For example, oversampling allows the design of PR filter banks having unidentical prototypes (of equal and unequal lengths) for the analysis and synthesis stage. Examples demonstrate the increased design freedom due to oversampling. Finally, it is shown that PR prototypes being designed for the oversampled case can also serve as almost-PR prototypes for critically subsampled cosine-modulated pseudo QMF banks.

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Section: E Relation To Dft Filter Banksmentioning

confidence: 99%

“…Choosing as in (13), as in (16), and writing the delay as (21) leads to the expression for the product [9], [14] (…”

Section: B Pr Conditionsmentioning

confidence: 99%

Oversampled cosine-modulated filter banks with arbitrary system delay

Kliewer

Mertins

1998

IEEE Trans. Signal Process.

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“…non-uniform filter banks with different subsampling ratios [2], or to filter banks only available as "black boxes" with not explicitly known coefficients. To generalize our approach, we therefore employ the measurement method by Heinle and SchiiBler [4], which measures aliasing and linear and non-linear distortions of implemented multirate systems where only the dec-0-7803-5 148-7/98/$10.0001998 IEEE imations/expansions rates have to be known a priori.…”

Section: Introductionmentioning

confidence: 99%

Measuring performance limits of subband adaptive systems

Stenger

Rabenstein

Weiss³

et al.

Conference Record of Thirty-Second Asilomar Conference on Signals, Systems and Computers (Cat. No.98CH36284)

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We discuss a method to measure the convergence limits of general subband adaptive systems due to non-ideal filter banks. Aliasing caused in such filter bank presents a distortion to the subband adaptive system which forms a lower limit for the minimum mean squared error. The accuracy of the achievable model is given by the transfer function of the filter bank. To measure both aliasing and filter bank distortions, we employ the measurement technique by Heinle and Schussler (see Proc. IEEE International Conference on Acoustics, Speech and Signal Processing, Atlanta, GA, p.2754-57, 1996). The presented approach is applicable to a wide range of subband adaptive filter systems. Examples for the measured limits are presented

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A new approach to the compensation of aliasing in transform and subband coders

Heinle

1997 IEEE International Conference on Acoustics, Speech, and Signal Processing

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Measuring the performance of implemented multirate systems

Cited by 5 publications

References 1 publication

Oversampled cosine-modulated filter banks with arbitrary system delay

Oversampled cosine-modulated filter banks with arbitrary system delay

Measuring performance limits of subband adaptive systems

A new approach to the compensation of aliasing in transform and subband coders

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