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Drop in a bounce of your mix or master. The file is decoded and analysed on your own device, never uploaded. You will see the overall phase correlation, how many dB the mix loses when left and right are summed to mono, the side-to-mid balance, stereo width, and a correlation graph across the whole song so you can find the exact sections that go out of phase. Press play and switch Mono on to hear the mono sum for yourself.
No. The file is read with your browser’s built-in audio decoder and analysed on your device. Nothing is sent to a server or stored.
Most finished mixes sit between about +0.3 and +0.9. Readings near 0 mean very wide or uncorrelated material, and anything below 0 means parts of the mix will cancel in mono.
It is how much quieter the mix gets when left and right are added together. A mono signal loses 0 dB, a hard-panned or fully uncorrelated signal about 3 dB, and a polarity-inverted channel can disappear completely.
Phones, many Bluetooth speakers, club systems and some streaming situations play in mono. Out-of-phase bass, wideners or stereo delays can vanish there.
Mid is what both channels share (L+R) and side is what differs (L−R). A side level far below mid is a narrow mix; side close to or above mid is very wide.
Check polarity on double-tracked or multi-miked parts, keep bass and kick mono, reduce stereo widener amounts, and use mid/side EQ to narrow low frequencies.