# High-order center-frequency adaptive filters using block-diagram-based frequency transformation

@article{Koshita2011HighorderCA, title={High-order center-frequency adaptive filters using block-diagram-based frequency transformation}, author={Shunsuke Koshita and Yuki Kumamoto and Masahide Abe and Masayuki Kawamata}, journal={2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, year={2011}, pages={4284-4287} }

This paper proposes a simple method of realization of center-frequency adaptive filters for high-accuracy detection of band-pass signals immersed in a broadband signal. Our method extends the conventional method proposed by Kumar and Pal. While the conventional center-frequency adaptive filters were mathematically difficult to describe in the case of high filter order, our method provides a simple procedure to construct any kind of high-order center-frequency adaptive filter. We achieve this… Expand

#### 14 Citations

Adaptive Detection of Narrowband Signals Using Frequency-Transformation-Based Variable Digital Filters

- 2011

This paper presents an application of variable infinite impulse response (IIR) digital filters based on the Constantinides frequency transformation to adaptive filtering. We propose a new unified… Expand

A State-Space Approach to High-order Adaptive Band-Pass Filtering

- Computer Science
- 2018 IEEE 23rd International Conference on Digital Signal Processing (DSP)
- 2018

It is demonstrated that the adaptive state-space filters show the robust convergence behavior against quantization effects, whereas the convergence behavior of the conventional direct-form adaptive filters is very sensitive to the quantizationeffects. Expand

Design of Variable Bandpass Filters Using First Order Allpass Transformation And Coefficient Decimation

- Computer Science, Mathematics
- ArXiv
- 2016

The design of a computationally efficient variable bandpass digital filter is presented, accomplished by combining warped filter with the coefficient decimation technique, and offers a total gate count reduction of 36% and 65% over the warped filters. Expand

Design of Programmable Digital Filter: Band Pass Using Second Order All Pass Transformation and Coefficient Decimation

- Mathematics
- 2014

In this paper, the design of a computationally efficient programmable digital filter (PDF) is presented. The centre frequency and bandwidth of this filter can be for the desired one without updating… Expand

Variable cutoff frequency FIR filters: a survey

- Computer Science, Engineering
- 2018

This paper presents a comprehensive review of the existing variable cutoff frequency FIR filter design techniques, including the developments in the recent two decades and the significant developments/incremental works thereof. Expand

An Improved Coefficient Decimation Based Reconfigurable Low Complexity Wrapped Filter Implementation

- 2014

Variable digital filters (VDF) are the digital filters that are used in most signal processing applications whose frequency specifications such as cut-off frequency can be controlled. The warped… Expand

Efficient Implementation of Reconfigurable Warped Digital Filters With Variable Low-Pass, High-Pass, Bandpass, and Bandstop Responses

- Computer Science, Mathematics
- IEEE Transactions on Very Large Scale Integration (VLSI) Systems
- 2013

The proposed architecture provides variable low-pass or high-pass responses with fine control over cut-off frequency and variable bandwidth bandpass or bandstop responses at an arbitrary center frequency without updating the filter coefficients or filter structure. Expand

High-performance variable band-pass/band-stop state-space digital filters using Gramian-preserving frequency transformation

- Mathematics, Computer Science
- Digit. Signal Process.
- 2014

This paper presents a simple state-space-based method for design and realization of variable band-pass/band-stop IIR digital filters that ensure high-performance with respect to finite wordlength effects such as L"2-norm dynamic range scaling, limit cycles, roundoff noise, and coefficient sensitivity. Expand

An Area Efficient Design of Warped Filters

- Computer Science
- 2018

The area utilization is reduced by 22% by implementing the new design of the warped filter and a comparative analysis among the various adders and multipliers is performed. Expand

Reconfigurable Warped Digital Filter Architecture for Hearing Aid

- Computer Science
- 2019 International Conference on Communication and Electronics Systems (ICCES)
- 2019

A system with reconfigurable warped VDF that uses a single prototype filter for generating all the necessary sub-bands and automates the generation of the control signals for reconfiguring the filter and pipelines the processing of each sub-band to generate the requisite magnitude response. Expand

#### References

SHOWING 1-10 OF 12 REFERENCES

Performance analysis of the recursive center-frequency adaptive bandpass filters

- Mathematics
- 1989

Abstract Recently, a new class of constrained adaptive filters namely the recursive center-frequency adaptive filters have been developed for the tracking and enhancement of bandpass signals. In this… Expand

Recursive center-frequency adaptive filters for the enhancement of bandpass signals

- Computer Science
- IEEE Trans. Acoust. Speech Signal Process.
- 1986

A new adaptive algorithm, namely, the recursive maximum-mean-squares (RMXMS) algorithm, is developed based on the gradient ascent technique for the implementation of these filters. Expand

Factorized All-Pass Based IIR Adaptive Notch Filters

- Computer Science, Mathematics
- IEEE Transactions on Signal Processing
- 2007

This paper introduces a new family of infinite impulse response adaptive notch filters that forms multiple notches using a second-order factorization of an all-pass transfer function that achieves lower bias than other approaches at low SNR. Expand

Tracking of bandpass signals using center-frequency adaptive filters

- Computer Science
- IEEE Trans. Acoust. Speech Signal Process.
- 1990

The tracking performance of two examples of these filters are analyzed for step, ramp, and sinusoidal variations of the input signal center frequency, and these are shown to track the signals very effectively. Expand

Tracking properties of a gradient-based second-order adaptive IIR notch filter with constrained poles and zeros

- Mathematics, Computer Science
- IEEE Trans. Signal Process.
- 2002

It is discovered that the asymptotic tracking error may be driven to zero for a positive chirp rate by selecting a proper step size, which is an interesting property for a real-valued adaptive filtering algorithm. Expand

A piloted adaptive notch filter

- Mathematics, Computer Science
- 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03).
- 2003

A new adaptive system where the main zero of the notch filter is sandwiched between two piloted zeros, which is very effective for locking on frequencies, which are neither very close to dc nor veryclose to half sampling frequency. Expand

A gradient algorithm for center-frequency adaptive recursive bandpass filters

- Computer Science
- Proceedings of the IEEE
- 1985

A gradient ascending algorithm is proposed to update the center-frequency-dependent coefficients of the filter to maximize the performance function. Expand

Multiple fully adaptive notch filter design based on allpass sections

- Computer Science, Mathematics
- IEEE Trans. Signal Process.
- 2000

A canonical, adaptive cascade-structure IIR notch filter to detect and track multiple time-varying frequencies in additive white Gaussian noise and is computationally simple, converges rapidly, and has good frequency resolution. Expand

Adaptive IIR Filtering in Signal Processing and Control

- Mathematics
- 1994

Recursive filter structures the Beurling-Lax theorem, Hankel forms and classical identification adaptive IIR filtering in signal processing and control stability of time-varying recursive filters… Expand

Spectral Transformations for Digital Filters

- Mathematics, Geology
- 1970

A deep well pumping device including a vertically reciprocating pump piston supporting a pulley on a horizontal axis with a flexible band-like tension member anchored at one end, extending over the… Expand