Audio Mix Translation Checker

The "does it translate?" reality check every mix needs before release. Your stereo mix is rendered through seven bounded FFmpeg chains that imitate real consumer playback: a mono phone speaker (400 Hz–8 kHz bandpass with a presence lift and light compression), mono laptop speakers (200 Hz–10 kHz), consumer earbuds (weak deep bass, boosted presence), a bass-boosted car stereo, a big club/PA system, a straight mono fold, and a noisy street (mono, band-limited, with seeded pink noise mixed at your chosen SNR). Every render is then measured — integrated LUFS, wide-band energies (sub, low, mid, presence, high) — and compared against the original mix, so the report shows exactly how much low end the phone speaker throws away and whether the presence band that carries the vocal still cuts through. The mono renders double as a phase check: the tool measures stereo correlation and the mono-fold energy loss of the source, including the worst 100 ms block, to flag elements that vanish when channels sum. You get a ZIP with every simulation render plus analysis.json and a README.