graeme. hello

There was a tweet recently pointing out the apparent structurelessness of the phase data that is usually discarded when you compute audio spectrograms.

Speculations.

This post has two things: Two somewhat obscure non-linear invertible operations that work on only part of a register, and A fast stateless random permutation generator that uses them, and passes some statistical tests for RNGs you may have seen before The…

This post is part of the HMN Learning Jam.

This post is about an attempt to generate blue noise at a point: no state, no offline training, just arithmetic on an index.

Here’s a variation on the damper I keep coming up with uses for.

stb_ds is a generic container library for C.

A couple months ago I set @tiny_dso running.

So, despite saying I didn’t want to do this in my last post on this, I went and forked Hugo.

Angelo Pesce (@kenpex) recently tweeted: This is a calibration poll.

Update (2020-01-19): I lasted some 3 weeks before gettng rid of this.

Here’s something I’ve been wondering about lately: what happens if you replace all the sine waves in the fourier transform with triangle waves?

Phase inversion takes a signal and flips it upside down .