Uploads by Bob K
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For Bob K (talk · contributions · Move log · block log · uploads · Abuse filter log)
This special page shows all uploaded files that have not been deleted; for those see the upload log.
| Date | Name | Thumbnail | Size | Description |
|---|---|---|---|---|
| 13:59, 18 September 2024 | Fourier transform, Fourier series, DTFT, DFT.svg (file) |  |
100 KB | added detail to labels |
| 20:12, 25 March 2024 | Spectral views of zero-fill and interpolation by lowpass filtering.pdf (file) |  |
101 KB | Remove accidental (blank) second page. |
| 22:36, 24 March 2024 | Spectral views of zero-fill and interpolation by lowpass filtering.svg (file) |  |
99 KB | Modified a label and a table heading. But I might have lost the dashed-lines representing the lowpass filter and its repetitions. |
| 18:49, 2 January 2024 | Onfreq.png (file) |  |
83 KB | Uploaded own work with UploadWizard |
| 14:32, 28 November 2023 | Fourier series illustration.svg (file) |  |
151 KB | Reverted to version as of 22:50, 25 April 2021 (UTC) |
| 16:52, 16 February 2023 | Offfreq i2p.svg (file) |  |
117 KB | Uploaded a work by Thenub314 from https://commons.wikimedia.org/wiki/File:Offfreq.svg Changes: 2πi is replaced by i2π, preferred by some. with UploadWizard |
| 19:29, 5 February 2023 | Normalized frequency example.svg (file) |  |
29 KB | Uploaded own work with UploadWizard |
| 11:47, 1 May 2022 | Comparison of spectral leakage of several window functions.svg (file) |  |
3.79 MB | enlarge legend and add a tick at x=.5 |
| 03:19, 12 April 2022 | Correlation function.svg (file) |  |
69 KB | Uploaded own work with UploadWizard |
| 14:43, 17 March 2022 | PlotRectifiedSineSignal.svg (file) |  |
22 KB | change f(x) to s(x); same reason as last version |
| 14:41, 17 March 2022 | PlotHalfRectifiedSineSignal.svg (file) |  |
17 KB | change f(x) to s(x); same reason as last version |
| 14:39, 17 March 2022 | PlotParabolaSignal.svg (file) |  |
19 KB | change f(x) to s(x); same reason as last version |
| 14:37, 17 March 2022 | PlotSawtooth2Signal.svg (file) |  |
10 KB | change f(x) to s(x); same reason as last version |
| 14:35, 17 March 2022 | PlotSawtooth1Signal.svg (file) |  |
10 KB | change f(x) to s(x); same reason as last version |
| 14:31, 17 March 2022 | PlotRectangleSignal.svg (file) |  |
11 KB | change f(x) to s(x); same reason as last version |
| 03:59, 5 March 2022 | Instantaneous (wrapped) phase; one 360° plot stacked 3 times vertically.jpg (file) | _phase;_one_360%C2%B0_plot_stacked_3_times_vertically.jpg){kind=small} |
1.47 MB | Uploaded own work with UploadWizard |
| 17:02, 2 November 2020 | Window function and frequency response - GAP optimized Nuttall.svg (file) |  |
157 KB | Uploaded own work with UploadWizard |
| 13:00, 2 October 2020 | Nyquist frequency & rate.svg (file) |  |
47 KB | Uploaded own work with UploadWizard |
| 16:02, 19 August 2020 | Sampling the Discrete-time Fourier transform.svg (file) |  |
46 KB | make some objects darker |
| 16:51, 10 August 2020 | DFT-even Hann window & spectral leakage.png (file) |  |
34 KB | change a figure title and x-limits. |
| 16:00, 10 August 2020 | Odd-length, "DFT-even" Hann window & spectral leakage.png (file) |  |
35 KB | change figure titles |
| 00:58, 22 May 2020 | "Crowd surfing" at the culmination of Contrastock 2011, Glen Echo Park,Md.jpg (file) |  |
68 KB | Uploaded own work with UploadWizard |
| 00:51, 9 May 2020 | Dutch Crossing teaching aids.png (file) |  |
1.3 MB | Uploaded own work with UploadWizard |
| 21:24, 8 May 2020 | Salty Dog Rag.svg (file) |  |
76 KB | Uploaded own work with UploadWizard |
| 21:49, 31 March 2020 | Comparison of symmetric and periodic triangular window functions.svg (file) |  |
94 KB | Remove legend from 2nd image, because: The equivalent noise bandwidth formula allows values less than one "bin" (for some windows) when used with a 9-point periodic summation and an 8-point DFT. That actually makes sense, because a bandwidth of 1.1 (for instance) measured in 1/9-width bins is only 0.98 measured in 1/8-width bins. But values less than one are not customary. |
| 20:40, 31 March 2020 | Comparison of symmetric and periodic Gaussian windows.svg (file) |  |
108 KB | Remove legend from 2nd image, because: The equivalent noise bandwidth formula allows values less than one "bin" (for some windows) when used with a 9-point periodic summation and an 8-point DFT. That actually makes sense, because a bandwidth of 1.1 (for instance) measured in 1/9-width bins is only 0.98 measured in 1/8-width bins. But values less than one are not customary. |
| 02:10, 22 March 2020 | WOLA channelizer example.png (file) |  |
374 KB | previous version had a mistake |
| 08:55, 2 February 2020 | Illustration of causal and non-causal filters.png (file) |  |
78 KB | minor cleanup |
| 08:52, 2 February 2020 | Illustration of causal and non-causal filters.svg (file) |  |
65 KB | minor cleanup |
| 00:17, 29 January 2020 | Circular convolution example.svg (file) |  |
40 KB | replace white figure background with gray |
| 21:07, 28 January 2020 | Processing losses for 3 window functions.svg (file) |  |
63 KB | change frame background from white to gray |
| 13:05, 26 January 2020 | Spectral leakage caused by "windowing".svg (file) |  |
170 KB | fixed missing yticks (2nd row) |
| 13:57, 25 January 2020 | Overlap-add algorithm.svg (file) |  |
140 KB | replace version with spurious arrow at the top |
| 17:30, 24 January 2020 | Overlap-save algorithm.svg (file) |  |
125 KB | change frame color from white to gray |
| 04:43, 22 January 2020 | FFT size vs filter length for Overlap-add convolution.svg (file) |  |
427 KB | new graph title |
| 15:55, 8 January 2020 | Spectral effects of decimation.pdf (file) |  |
86 KB | change B to 0.5/MT |
| 15:52, 8 January 2020 | Spectral effects of decimation.svg (file) |  |
95 KB | change B to 0.5/MT |
| 13:44, 24 December 2019 | Multirate upsampling (interpolation) filter.svg (file) | _filter.svg) |
43 KB | add a vertical line for filter delay arrow to point at |
| 18:37, 20 November 2019 | Window function and frequency response - Lanczos.svg (file) |  |
158 KB | Display parameter B on frequency distribution |
| 18:36, 20 November 2019 | Window function and frequency response - Hann-Poisson (alpha = 2).svg (file) | .svg) |
158 KB | Display parameter B on frequency distribution |
| 18:35, 20 November 2019 | Window function and frequency response - Planck-Bessel (epsilon = 0.1, alpha = 4.45).svg (file) | .svg) |
156 KB | Display parameter B on frequency distribution |
| 18:35, 20 November 2019 | Window function and frequency response - Bartlett-Hann.svg (file) |  |
157 KB | Display parameter B on frequency distribution |
| 18:34, 20 November 2019 | Window function and frequency response - Exponential (60dB decay).svg (file) | .svg) |
158 KB | Display parameter B on frequency distribution |
| 18:33, 20 November 2019 | Window function and frequency response - Exponential (half window decay).svg (file) | .svg) |
158 KB | Display parameter B on frequency distribution |
| 18:32, 20 November 2019 | Window function and frequency response - Ultraspherical (mu = -0.5).svg (file) | .svg) |
158 KB | Display parameter B on frequency distribution |
| 18:31, 20 November 2019 | Window function and frequency response - Dolph-Chebyshev (alpha = 5).svg (file) | .svg) |
157 KB | Display parameter B on frequency distribution |
| 18:30, 20 November 2019 | Window function and frequency response - Kaiser (alpha = 3).svg (file) | .svg) |
157 KB | Display parameter B on frequency distribution |
| 18:28, 20 November 2019 | Window function and frequency response - Kaiser (alpha = 2).svg (file) | .svg) |
158 KB | Display parameter B on frequency distribution |
| 18:28, 20 November 2019 | Window function and frequency response - DPSS (alpha = 3).svg (file) | .svg) |
157 KB | Display parameter B on frequency distribution |
| 18:27, 20 November 2019 | Window function and frequency response - DPSS (alpha = 2).svg (file) | .svg) |
158 KB | Display parameter B on frequency distribution |
