Digital signal processing using sliding windowed infinite fourier transform
US11468144B2 · kind B2 · utility
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Key dates
| Filing date | Jun 15, 2018 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Apr 28, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2017/009
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems and methods for digital signal processing using a sliding windowed infinite Fourier transform (“SWIFT”) algorithm are described. A discrete-time Fourier transform (“DTFT”) of an input signal is computed over an infinite-length temporal window that is slid from one sample in the input signal to the next. The DTFT with the temporal window at a given sample point is effectively calculated by phase shifting and decaying the DTFT calculated when the temporal window was positioned at the previous sample point and adding the current sample to the result.
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