Research results, deep dives, and other SystemHalted things worth a read. For release notes and announcements, see News.
Designing a Shepard-tone test for time-stretch / pitch-shift quality
How we built a spectral-envelope-preservation metric for MondoLoop’s DSP bench using Shepard tones, FFT peak picking, and a log-frequency Gaussian fit — and why the first version’s 69-cent “error” was actually the test’s fault, not the stretcher’s.