Technology

Engineering you can hear, and measure.

CX AUDIO plugins are written in C++ for real-time audio. These are the rules every one of them follows, and how we check them.

Real time
Nothing waits on the audio thread.
No memory is allocated while audio runs, data for the interface leaves the audio engine through a lock-free queue, and any buffer size the host chooses works. Silence, NaN and infinite samples cannot break processing. Automated tests check all of it on every change.
Timing
Latency is measured and reported.
Each plugin tells the host exactly how much delay it adds, so delay compensation lines every track up. CX TUNE has two modes and we publish both numbers: Standard needs 35.8 ms at 48 kHz, Low Latency only 20 samples (0.45 ms at 44.1 kHz) for singing through it while recording.
Honest bypass
Off means off.
Bypass is bit-exact and delay-compensated: what comes out is exactly what went in, so you can compare fairly.
Interfaces
Readable at any size.
Our interfaces are vector-drawn and scale uniformly from 85 % to 200 %, and they show live engine data without slowing the audio down.

Signal chain

Inside a vocal tuner.

CX TUNE, our first product, turns a voice into a corrected voice in four stages. Each one is built and tested in house.

01
Detect
Find the pitch of the voice, frame by frame, and how sure we are about it.
02
Track
Follow the voice through vibrato, slides and fast passages without jumping to an overtone.
03
Decide
Choose the target note from your key and scale, with hysteresis so it does not flicker.
04
Shift
Move the voice onto that note while keeping its own formants, so it still sounds like the singer.

How we test

Numbers first, then ears. A change that measures well but sounds worse does not ship.

Synthetic signals
Sine sweeps, synthetic voices and edge cases with a known right answer.
Real vocals
Sung phrases with consonants, breaths and silence, analysed for wrong notes and artefacts.
Listening
Renders compared side by side by ear before a change ships.
In the DAW
Each release is checked inside the hosts we list, with their versions.

Platforms

Now: Windows, 64-bit · VST3 and Standalone
Not yet: macOS · Audio Unit (AU)
Licensing: Account-based activation, offline activation by file, up to 3 machines