Group delay reduction in FIR digital filters

Garai, Boul Chandra; Das, Priyanka; Mishra, Amit Kumar

doi:10.1016/j.sigpro.2011.02.005

Cited by 6 publications

(1 citation statement)

References 12 publications

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“…For the design of such filters, methods dedicated for the broader category of nonlinearphase FIR filters design can be applied [7][8][9]. There are other methods based on block convolution [10] to filter long data sequences. If no fixed group delay is required standard methods for designing minimum-phase filters can also be used [11,12].…”

Section: Introductionmentioning

confidence: 99%

International Journal of Electronics and Telecommunications

Konopacki

2020

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The aim of the work is to present the method for designing sparse FIR filters with very low group delay and approximately linear-phase in the passband. Significant reduction of the group delay, e.g. several times in relation to the linear phase filter, may cause the occurrence of undesirable overshoot in the magnitude frequency response. The method proposed in this work consists of two stages. In the first stage, FIR filter with low group delay is designed using minimax constrained optimization that provides overshoot elimination. In the second stage, the same process is applied iteratively to reach sparse solution. Design examples demonstrate the effectiveness of the proposed method.

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Section: Introductionmentioning

confidence: 99%

International Journal of Electronics and Telecommunications

Konopacki

2020

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Comparison of filtering methods for real-time extraction of the volitional EMG component in electrically stimulated muscles

Hambly,

de Sousa,

Pizzolato

2024

Biomedical Signal Processing and Control

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Application of a zero-latency whitening filter to compact binary coalescence gravitational-wave searches

et al. 2018

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Joint electromagnetic and gravitational-wave (GW) observation is a major goal of both the GW astronomy and electromagnetic astronomy communities for the coming decade. One way to accomplish this goal is to direct follow-up of GW candidates. Prompt electromagnetic emission may fade quickly, therefore it is desirable to have GW detection happen as quickly as possible. A leading source of latency in GW detection is the whitening of the data. We examine the performance of a zero-latency whitening filter in a detection pipeline for compact binary coalescence (CBC) GW signals. We find that the filter reproduces signal-to-noise ratio (SNR) sufficiently consistent with the results of the original high-latency and phasepreserving filter for both noise and artificial GW signals (called "injections"). Additionally, we demonstrate that these two whitening filters show excellent agreement in χ 2 value, a discriminator for GW signals.

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Group delay reduction in FIR digital filters

Cited by 6 publications

References 12 publications

International Journal of Electronics and Telecommunications

International Journal of Electronics and Telecommunications

Comparison of filtering methods for real-time extraction of the volitional EMG component in electrically stimulated muscles

Application of a zero-latency whitening filter to compact binary coalescence gravitational-wave searches

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