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Hi everyone,I wanted to share a project I’ve been working on called Calibra.
It’s a VST3 plugin for Windows and macOS made for headphone calibration, phase control and monitoring directly inside the DAW.
You can find it here:
https://iteritas.itch.io/calibra (https://iteritas.itch.io/calibra)
I originally built it for my own workflow because I wanted one plugin that could handle the kind of headphone correction files I actually use, without having to jump between different tools.
Calibra supports TXT correction files, including common Equalizer APO / AutoEQ-style files, with support for:
Preamp
Filter
GraphicEQ
Include
enabled / disabled filters
parametric EQ filters
graphic correction curves
relative include paths
decimal comma parsing
It also supports FFP preset import and export and conversion.
Passes null-test with Eq-APO.
The current correction modes are:
IIR Minimum Phase (0 Latency)
FIR Minimum Phase (0 Latency)
FIR Natural Phase
FIR Linear Phase
So depending on the situation, you can choose between low-latency minimum-phase correction, FIR-based correction, a more natural phase/ringing compromise, or linear-phase FIR with host-compensated latency.
I also added the monitoring tools I personally wanted to have in the same plugin:
A/B calibration slots
crossfeed with 5 hardware-based presets and custom controls
input gain
pan
stereo width
bass side cut
Stereo / Left / Right / Mid / Side monitoring
panic / safety mute
project recall with embedded correction snapshots
The A/B slots are useful for comparing two headphones, two correction files, two target curves, measured vs AutoEQ correction, or different phase modes without constantly reloading files.
The crossfeed is intended as a practical headphone monitoring tool. It is not meant to create a fake room or exaggerated stereo effect. It is there to reduce the very hard left/right separation that can happen on headphones, especially during longer sessions.
Project recall was also important to me. Calibra can store the applied correction snapshot inside the DAW project, so a session can still recall the calibration even if the original correction file has been moved, renamed or deleted.
I’m also starting to upload my own headphone measurements, and I’d like to use Calibra as part of a broader measurement, correction and headphone research workflow.