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Check a mix against the delivery spec, fix it, and print a compliant file.

LC-1 measures loudness and true peak, checks top and tail silence, and shows you every fix before anything is written. Your audio never leaves your computer.

Check a file free See pricing

Checking is free. A subscription is needed to print the corrected file.

Spring promo 30s.wavUK & ROI commercial TV

Integrated loudness−19.8 LUFSWill apply 3.2 dB attenuation

True peak−3.3 dBTPMaximum −1.0

Head silence, 6 frames under −70 dBFSFail

Format, 48 kHz 24-bitPass

Example figures, shown as the app displays them.

What it does

Measures

Integrated, short-term and momentary loudness, loudness range and true peak, to ITU-R BS.1770.

Checks the spec

47 delivery presets covering TV and radio in around 70 countries, plus the worldwide streaming platforms. Each names the published spec its figures come from.

Audition fixes first

Level changes, a true-peak limiter in three strengths, and top and tail mutes. A/B check changes before you commit.

Prints and re-checks

Writes a new file named with the spec and saves it next to your original (in Chrome and Edge). The original is untouched, and the new file is measured again.

Specs covered

Each spec has its own page with the figures and where they come from.

Europe 21 North America 3 Latin America 2 Asia-Pacific 6 Middle East & Africa 1 Streaming 5 Radio & digital audio 9

Pricing

Free

£0

Measure and check any file against any spec. No printing.

Check a file

Single

£19.99 a month + VAT

One person. Unlimited files. Cancel any time and keep access until the end of the month you have paid for.

Prices exclude VAT or local sales tax, added at checkout. Business customers can enter a VAT number.

Facility

£79.99 a month + VAT

Up to 5 people. Unlimited files. One bill, and seats you can hand on when the team changes.

Prices exclude VAT or local sales tax, added at checkout. Business customers can enter a VAT number.