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The provided SigMF pairsigmf_logo.sigmf-meta andsigmf_logo.sigmf-data represent the stereo audio that is the official SigMF logo.
The intent of these files is to both serve as a nice visual and an exemplar metadata to be used as a reference. Thepng is just a simplified view of the logo as rendered on an XY-oscilloscope per the below gist.
The full logo archive contains a variety of versions of the logo for multiple use-cases.
sigmf_logo_fullbandis the unfiltered logo at 192 KHz sample rate.logo_*.wavare audio files for playback without converstion from SigMF.logo_manifold.stlis a logo suitable for 3d printing.logo_*.mp4are XY-oscilloscope videos rendered from the SigMF logo.logo-scope.*are vectors & images rendered directly from the SigMF dataset usingthis gist.logo-*.svgare various vector versions of the logo.logo-icon-*.pngare various icons for folders or discord in multiple sizes.
The SigMF logo was created with the following steps:
- Initial render inBlender with as simple geometry as possible. The
stlis a very simplified and tweaked version of theEurostile font. - A timeline was created withOsciStudio with various modulated artifacts over a 6 second period.
- The lower 48KHz version was then lowpass filtered and adjusted for -14 LUFS inAudacity per theEBU R 128 loudness spec.
- Original metadata was added with theSigMF Python module.