TETRAPROC(1)

💖 TETRAPROC(1) — like, the Tetrahedral Microphone Processor bestie 💖

User Commands · tetraproc · ok so sit down, we're doing Ambisonics 🎀

✨ NAME ✨

tetraproc — Tetrahedral Microphone Processor 🎙️🦋

🌸 DESCRIPTION 🌸

Okay so TetraProc is a microphone processor, and what it does is literally take the A-format signals coming out of a tetrahedral Ambisonic microphone and convert them into B-format signals that are ready for recording. That's the whole glow-up. A-format in, B-format out, recording-ready. 💅

TetraProc is made of two parts: the A/B converter, and the metering and monitoring. Meanwhile Tetrafile only has the A/B conversion part — and it's otherwise identical. So if you only need the conversion, Tetrafile is right there. ✨

Both TetraProc and TetraFile will normally use the Furse-Malham form of B-format, in which the W signal is attenuated by 3dB w.r.t. the first order ones. Both can also use the 'normalised' and 'semi-normalised' forms if required. 🌀

For safety, this can be changed on the command line only, and Tetraproc will show the current setting in its metering window. 👀

And heads up bestie, because this is the part everyone gets confused about: the coefficients shown in the config window are independent of this — they are _always_ in the semi-normalised form. Like, always always. That means they do not include the 3dB attenuation on W for Furse-Malham, and they do not include the 4.8dB gain on XYZ for the normalised one. Not me having to say this twice but it's important fr fr. 😭

🎀 OPTIONS 🎀

• -h — Display this text. The little help meow. 🐱
• -B — Ambisonic mode. ✨
• -name <name> — JACK client name. 🏷️
• -s <server> — JACK server name. 🖥️
• -g <geometry> — Window position. 🪟

🦋 SEE ALSO 🦋

tetrafile(1) — the conversion-only sibling, go say hi 👑

👑 AUTHOR 👑

tetraproc was written by Fons Adriaensen <fons@linuxaudio.org>. 🫶

This manual page was written by Alessio Treglia <alessio@debian.org> for the Debian project (but may be used by others). 💜

March 2011 · TETRAPROC(1) — and that's the whole page bestie, mwah, go record something iconic 🌈⭐🎀