File:CQT-piano-chord.png
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CQT-piano-chord.png (784 × 556 pixels, file size: 78 KB, MIME type: image/png)
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Summary
DescriptionCQT-piano-chord.png |
English: The result of a constant-Q transform applied to the waveform of a C major chord played on a piano. The x axis corresponds to frequency mapped to the standard pitch names (increasing from lower pitches on the left to higher frequencies on the right). The y axis is time, with the start of the piano chord happening at the bottom and the release happening at the top (approximately 8 seconds later)
The darker areas correspond to higher values of the constant Q transform. The peak values are vibrating frequencies of the strings. The leftmost 3 strongest peaks are at the fundamental frequencies of the notes of the C major chord (C, E, G). The the remaining peaks to the right of the fundamental frequencies are overtones. Note that Brown-Puckette algorithm on the showcqt uses kernels derived directly from frequency domain, the bandwidth calculation is actually variable-Q, and showcqt uses linear/nth root amplitude scaling rather than logarithmic. |
Date | |
Source | Own work |
Author | Em3rgent0rdr |
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19 March 2022
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7c07cf5c936be26505f28a40e01249568e741b9d
79,908 byte
556 pixel
784 pixel
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 04:48, 19 March 2022 | ![]() | 784 × 556 (78 KB) | Em3rgent0rdr | Cross-wiki upload from en.wikipedia.org |
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Horizontal resolution | 37.8 dpc |
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Vertical resolution | 37.8 dpc |