The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
A continuously variable digital delay element
Abstract
The author describes an FIR (finite-impulse-response) filter which synthesizes a controllable delay. By changing the delay the filter has the ability to interpolate between samples in the data stream of a band-limited signal. Because high sampling rates are not required, the filter is especially suited for implementation in a digital signal processor (DSP), and has been implemented in a real-time DSP. The interpolator can be used as a practical way to reconstruct an original band limited signal from samples taken at the Nyquist rate. The variable delay filter can also be used as a more general computational element. Performance results are presented.>
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Cites
An Echo-Cancellation-Based 4800 Bit/s Full-Duplex DDD Modem
Werner, J.-J. (1984) · IEEE Journal on Selected Areas in Communications · doi:10.1109/jsac.1984.1146110 · Cited by 38
A Circuit That Changes the Word Rate of Pulse Code Modulated Signals
Candy, J. C., & Benjamin, O. (1983) · Bell System Technical Journal · doi:10.1002/j.1538-7305.1983.tb03117.x · Cited by 1
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Splitting the unit delay [FIR/all pass filters design]
Laakso, T. I., Valimaki, V., Karjalainen, M., & Laine, U. K. (1996) · IEEE Signal Processing Magazine · doi:10.1109/79.482137 · Cited by 1,168
Johansson, H., & Lowenborg, P. (2002) · IEEE Transactions on Signal Processing · doi:10.1109/tsp.2002.804089 · Cited by 176
Fractional Delay Filter Design Based on Truncated Lagrange Interpolation
Valimaki, V., & Haghparast, A. (2007) · IEEE Signal Processing Letters · doi:10.1109/lsp.2007.898856 · Cited by 66
Results on Maximally Flat Fractional-Delay Systems
Samadi, S., Ahmad, M. O., & Swamy, M. N. S. (2004) · IEEE Transactions on Circuits and Systems I: Regular Papers · doi:10.1109/tcsi.2004.836848 · Cited by 51
Closed-Form Mixed Design of High-Accuracy All-Pass Variable Fractional-Delay Digital Filters
Deng, T.-B. (2011) · IEEE Transactions on Circuits and Systems I: Regular Papers · doi:10.1109/tcsi.2010.2089558 · Cited by 49
An efficient design of a variable fractional delay filter using a first-order differentiator
Pei, S.-C., & Tseng, C.-C. (2003) · IEEE Signal Processing Letters · doi:10.1109/lsp.2003.815616 · Cited by 37
Fractional Delay Filters—Design and Applications
Välimäki, V., & Laakso, T. I. (2001) · Information Technology: Transmission, Processing, and Storage · doi:10.1007/978-1-4615-1229-5_20 · Cited by 32
Two-Rate Based Low-Complexity Variable Fractional-Delay FIR Filter Structures
Johansson, H., & Hermanowicz, E. (2013) · IEEE Transactions on Circuits and Systems I: Regular Papers · doi:10.1109/tcsi.2012.2215697 · Cited by 25
$H^{\infty}$-Optimal Fractional Delay Filters
Nagahara, M., & Yamamoto, Y. (2013) · IEEE Transactions on Signal Processing · doi:10.1109/tsp.2013.2265678 · Cited by 15
“In some applications, digital filters with variable delay responses ( variable fractional delay filters[40], [10], [25], [26]) are desired.”
Analysis of Root Displacement Interpolation Method for Tunable Allpass Fractional-Delay Filters
Hacihabiboglu, H., Gunel, B., & Kondoz, A. M. (2007) · IEEE Transactions on Signal Processing · doi:10.1109/tsp.2007.897916 · Cited by 12
“The Farrow structure [5] allows continuously varying the fractional delay using a single parameter.”
MethodDistortion Reduction in Fractional Delay Filters
Zhou, Z., Yang, Y., Ma, M., & Jiao, B. (2021) · IEEE Signal Processing Letters · doi:10.1109/lsp.2021.3064499 · Cited by 11
“, sinc [1], [4], Lagrange [5], [6], B-spline [7], [8], Farrow structure [9], and Newton structure [10], [11], are adopted to form FD filters.”
BackgroundClosed-Form Design of Half-Sample Delay IIR Filter Using Continued Fraction Expansion
Tseng, C.-C. (2007) · IEEE Transactions on Circuits and Systems I: Regular Papers · doi:10.1109/tcsi.2006.887643 · Cited by 9
Low-Sensitivity Design of Allpass Based Fractional Delay Digital Filters
Stoyanov, G., Nikolova, K., & Kawamat, M. (2011) · Digital Filters · doi:10.5772/15577 · Cited by 5
“Most of the VFD FIR filters are using the Farrow structure (Farrow, 1988), its modifications (YliKaakinen & Saramaki, 2006) or transformations (Deng, 2009a).”
Method
Metadata
- Authors
- Farrow, C. W.
- Affiliations
- AT&T (United States) (US)
- Corresponding author
- Farrow, C.W.
- Venue
- 1988., IEEE International Symposium on Circuits and Systems
- Publisher
- IEEE
- Published
- 2003-01-06
- Pages
- 2641-2645
- ISSN
- 0271-4302 (ISSN-L)
- OpenAlex
- W1876018024
- Cited by
- 816
- References
- 2
- Citations by year
- 2026: 13 · 2025: 19 · 2024: 15 · 2023: 15 · 2022: 4 · 2021: 14 · 2020: 17 · 2019: 23 · 2018: 24 · 2017: 21 · 2016: 31 · 2015: 24 · 2014: 38 · 2013: 39 · 2012: 48
- FWCI
- 58.30
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- IEEE International Symposium on Circuits and Systems proceedings (publishedVersion)
- Topics
- Physical Sciences › Computer Science › Signal Processing › Digital Filter Design and Implementation
- Physical Sciences › Computer Science › Signal Processing › Advanced Adaptive Filtering Techniques
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Analog and Mixed-Signal Circuit Design
- Keywords
- FIR filters, sample interpolation, band-limited signals, Nyquist sampling, signal reconstruction, digital signal processor implementation, real-time DSP
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