STL, OBJ and glTF: the units and axes each one assumes
Why a part arrives a thousand times too big or on its side: what STL, OBJ, glTF and 3MF say about units and the up axis, and how schmelze writes each.
Notes from the workbench.
How the tools work, what we measured, and what we got wrong on the way.
Splitting drums without a neural network
How seance splits a drum loop into kick, snare and cymbals with plain signal processing, how each build measures it, and a separator we dropped.
Which AutoCAD wrote this DWG? Read the first six bytes
Every DWG starts with a version code such as AC1032. What each code means, how to read it without AutoCAD, and what changed inside the file from R13 to 2018.
What a LUFS meter measures, in five steps
Integrated loudness is a filter, a mean square, two gates and a logarithm. How BS.1770-4 gets one LUFS number, and why true peak is not sample peak.
The two bits that sent our DWG reader the wrong way
Our DWG reader decoded one field with the wrong encoding. The number looked plausible, became the plan, and the plan solved a problem that did not exist.