A re-deliver note says "too loud." Specula says where: 2:14, 7:48, 31:02, and on which meter.
Most tools hand you a single worst case: max momentary, max short-term, max true peak. That settles whether the file ships, but not the question you actually act on, which moment to touch. The usual answer is to reopen the master in a DAW with a meter up and scrub until the needle jumps. Specula turns the verdict into a map. Set the spec's ceilings in the loudness-curve strip and every 100 ms block that crosses one is shaded along the waveform, full height across every channel, so each overshoot is a place you click to.
Three ceilings, three time scales, each catching a failure the others miss:
Momentary · 400 ms
The fast transient a slow meter sleeps through: a snare crack, a slammed door, a plosive, a music sting. Set the M threshold and every block over it is shaded.
Short-term · 3 s
The sustained stretch that rides too hot: a shouted line, a loud chorus, a music bed climbing under dialogue. EBU R128 S1 caps it for short-form; set the S threshold and every breaching span is marked.
True peak · inter-sample
The clip a sample meter never sees: peaks that surface only once the signal is reconstructed between samples. Set the TP threshold to the platform ceiling and every block whose 4× oversampled peak goes over is flagged.
Each shades in its own colour, matched to the threshold field you set, and layers over the rest, so where two breaches overlap you still see both. The threshold field carries a running count, so you know how many there are before you start. And the marks arrive both ways: live, building as the file plays, and all at once from the offline pass (⌘Return). Stacked right above the waveform, the loudness curve plots momentary and short-term against that same threshold as a reference line, so you read how far over each breach goes, not only that it crossed.
That is the distance between a QC report and a fix. You seek to the one shouted line and ride it, or to the one transient and cap it, while the rest of a nearly-right master stays untouched.
