Add d2_audio plugin — D2 Audio Compression & Voice Authentication

[adrianmallettne-commits]

New Plugin: d2_audio

This plugin contributes the D2 Audio codec and voice authentication system to Agent Zero.

Original research by Adrian Mallett (2021)

What it does

• Compress any audio file to the compact D2 format (peak extraction + Cubic Bézier reconstruction)
• Restore D2 files back to WAV with near-lossless fidelity
• Enrol and authenticate speakers via D2 voice fingerprinting (no cloud, no ML dependencies)
• Compare voice recordings for similarity scoring

Why it's unique

The D2 format represents audio as peak amplitudes + inter-peak timing arrays — a novel time-domain approach that independently parallels sinusoidal modelling codecs. The voice authentication extends this into biometrics using compact statistical fingerprints.

Plugin repo

https://github.com/adrianmallettne-commits/d2_audio