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.
• DJs, bands and show operators whose playback files must sit in a known range for a club or festival system.
• 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 at 4× oversampling 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.
• The verdict, with the fix. "Apple Podcasts: too loud — lower by 2.0 dB." "Spotify: OK." "EBU R128: peaks too hot — limit to −1 dBTP."
• Nothing is uploaded. The file is decoded and measured in your browser. There is no server, no storage, and nothing to delete because nothing left your device.
• Files up to 1 GB. WAV and MP3 stream through, so a three-hour recording costs the same memory as a jingle.
• It fixes the level, and previews the encoder. Fix it writes a WAV at the target with a true-peak limiter; Encode preview shows what an MP3 encoder will do to your peaks before you upload.
• 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.