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What Is a Savitzky-Golay Filter? [Lecture Notes]
Abstract
This article has attempted to answer the question "What is a Savitky-Golay filter?" in terms that will be familiar to the DSP community and readers of IEEE Signal Processing Magazine. This article reviewed the definition and properties of S-G filters and showed how they can be designed easily using polynomial approximation of an impulse sequence. In contrast to most discussions of S-G filters, they focused on the frequency domain properties, and offered an approximate formula for the 3-dB cutoff frequency as a function of polynomial order N and impulse response half length M. Engineers with a frequency domain mindset may find this useful if they choose to use S-G filters in their application.
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Citations
Cites
Smoothing and Differentiation of Data by Simplified Least Squares Procedures.
Savitzky, A., & Golay, M. J. E. (1964) · Analytical Chemistry · doi:10.1021/ac60214a047 · Cited by 21,904
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Metadata
- Authors
- Schafer, R.
- Venue
- IEEE Signal Processing Magazine
- Published
- 2011-07
- Volume
- 28
- Issue
- 4
- Pages
- 111-117
- ISSN
- 1053-5888 (ISSN-L)
- OpenAlex
- W2150823344
- Cited by
- 1,786
- References
- 1
- FWCI
- 34.41
- Type
- journal article
- Language
- en
- Open access
- closed
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- Schafer, R. (2011). What Is a Savitzky-Golay Filter? [Lecture Notes]. IEEE Signal Processing Magazine. https://doi.org/10.1109/msp.2011.941097
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
