CX TUNE gets its engine

CX TUNE started with the unglamorous part: a build that is reproducible, a test runner, and rules that keep the audio thread safe. No memory is allocated while audio runs, and silence or invalid samples cannot break the plugin. The automated tests enforce both.

On the same foundation came the real-time pitch engine. It detects the pitch of a voice, picks the target note from your key and scale, and shifts the voice there while keeping its formants. Hard Tune followed straight away.

The third milestone was about how a tuned voice sounds between notes: staged transitions instead of a chromatic staircase, and careful handling of consonants so an “s” or a “t” comes through clean.

Every step is measured against synthetic voices and real sung phrases. Listening tests come next.