SketchesAndPlots » History » Version 5
Chris Cannam, 2013-10-31 05:53 PM
| 1 | 1 | Chris Cannam | h1. Sketches and Plots |
|---|---|---|---|
| 2 | 2 | Chris Cannam | |
| 3 | 4 | Chris Cannam | "Infinitewave sweep":http://code.soundsoftware.ac.uk/projects/decimation/repository/entry/testsignals/infinitewave-sweep.wav plotted by the MATLAB toolbox. That is: |
| 4 | 4 | Chris Cannam | |
| 5 | 4 | Chris Cannam | <pre> |
| 6 | 4 | Chris Cannam | x = wavread('infinitewave-sweep.wav'); |
| 7 | 4 | Chris Cannam | xcqt = cqt(x,50,48000,24,96000); |
| 8 | 4 | Chris Cannam | contour(abs(xcqt.spCQT)); |
| 9 | 4 | Chris Cannam | </pre> |
| 10 | 4 | Chris Cannam | |
| 11 | 3 | Chris Cannam | !https://code.soundsoftware.ac.uk/attachments/download/843/Screenshot%20-%20311013%20-%2015_35_47.png! |
| 12 | 5 | Chris Cannam | |
| 13 | 5 | Chris Cannam | Same sweep, first Yeti version. Time alignment between octaves is not yet correct, and there is visible aliasing from decimation. |
| 14 | 5 | Chris Cannam | |
| 15 | 5 | Chris Cannam | !https://code.soundsoftware.ac.uk/attachments/download/844/Screenshot%20-%20311013%20-%2017_35_21.png! |