LoudSense

LoudSense answers one question in ten seconds: is this file OK for Spotify, Apple Podcasts, YouTube or the broadcaster? Drop the file and you get the waveform with clip and peak marks and the loudness curve, the numbers underneath — peak, true peak, clips, LUFS and LRA — and then the part no meter gives you: a verdict per platform with the change in dB.

Who it is for

• Podcast producers who need the episode at −16 LUFS for Apple and under −1 dBTP, every week, without opening a metering plugin.
• Mix and mastering engineers checking the delivered MP3, not just the WAV master — the encoder adds overshoot the master never had.
• Audiobook narrators checking the ACX spec, and broadcast editors checking EBU R128 or ATSC A/85 before delivery.
• DJs, bands and show operators whose playback files must sit at a level the venue gave them — add it as your own target.
• Anyone handing audio to a platform and tired of guessing what "normalised" will do to it.

What makes it different

• True peak, not just peak. Sample peak says −0.2 dBFS; true peak, oversampled, says +0.4 dBTP. The second one is what the encoder and the platform see. LoudSense shows both.
• Every clip, marked. Runs of full-scale samples are counted and drawn on the waveform, so you see where and whether it was the master or the MP3. A clipped file gets its own Clipped verdict.
• The verdict, with the fix. "Apple Podcasts: too loud — lower by 2.0 dB." "Spotify: OK." "EBU R128: out of spec — would be rejected." Every row has a Fix to this button.
• No audio reaches a server. The file is decoded and measured in your browser. What stays is a short history in this browser — file name, numbers, date — that you can clear; your own targets sync with your account.
• Files up to 1 GB. WAV streams in every browser and MP3 wherever the browser can stream it, so a three-hour recording costs the same memory as a jingle. Mono, stereo and 5.1 are measured per BS.1770.
• It fixes the level, and previews the encoder. Fix it writes a WAV at the target with a true-peak limiter and measures it again until it lands within 0.1 LU; for MP3 or AAC delivery it leaves room for the encoder. Encode preview shows what the encoder will do to your peaks before you upload.
• Phone first. On a phone the verdict sits at the top; on Android with the app installed you can share a recording straight to it.
• Health checks for the mistakes that reach a platform unnoticed: channel balance, phase, DC offset, silence, gaps, dropouts.

Pages in this guide

• Getting started — drop a file, read the panel, pick a target.
• Reading the numbers — what Peak, True Peak, Clips, LUFS-M/S/I and LRA mean, and the MP3-overshoot lesson.
• Platform targets — every platform target, audiobooks included, and how the verdict is decided.
• FAQ and Troubleshooting.