This is a pre-mastering check tool that analyzes your mix before sending it for mastering. It checks for common technical issues that could affect the mastering process.
Peak = The loudest moment in your song. Like the highest point on a roller coaster.
✅ Good: -3 to -1 dB ⚠️ Problem: 0 dB or higher (causes distortion)
RMS = Average loudness. Like measuring the "typical" height of the roller coaster.
✅ Normal: -18 to -12 dB
LUFS = How loud it actually sounds to your ears (not just numbers).
✅ For mastering: -18 to -14 LUFS gives the mastering engineer room to work
Dynamic Range = The difference between quiet and loud parts. High = more "breathing", Low = more "squashed".
✅ Good: 8-15 dB ⚠️ Too low: Under 6 dB (over-compressed)
Correlation = Do left and right play nice together?
✅ Good: 0.3 to 1.0 ⚠️ Problem: Below 0 (will sound weird in mono, like on phone speakers)
Stereo Width = How "wide" the sound feels.
✅ Normal: 30-70% Very wide isn't always better!
L/R Balance = Is one side louder than the other?
✅ Good: Within ±1 dB ⚠️ Problem: More than ±2 dB (mix is lopsided)
Think of it like a graphic equalizer. Each band shows if that area is louder (+) or quieter (-) than average:
Sub (20-60Hz) = The deep rumble you feel more than hear. Kick drum thump.
⚠️ Too much = muddy, boomy Too little = thin, no weight
Bass (60-200Hz) = The bass guitar, low end of vocals, warmth.
⚠️ Too much = boomy, unclear Too little = weak, no foundation
Low-Mid (200-500Hz) = Body and warmth, but also "mud" lives here.
⚠️ Too much = muddy, boxy Too little = thin, hollow
Mid (500Hz-2kHz) = Vocals, guitars, most of what you "hear".
⚠️ Too much = honky, harsh Too little = distant, lost
High-Mid (2-4kHz) = Clarity, presence, attack. Your ear is most sensitive here.
⚠️ Too much = harsh, fatiguing Too little = dull, buried
High (4-16kHz) = Air, sparkle, cymbals, "s" sounds.
⚠️ Too much = piercing, sibilant Too little = dark, muffled
👂 Perceptual vs 📊 Raw:
"Perceptual" shows how your ears actually hear it (bass seems quieter because our ears are less sensitive there).
"Raw" shows the actual energy - useful for comparing with other analyzers.
Clipping happens when your audio is too loud and gets "cut off" at the top, causing distortion.
✅ Ideal: 0 clips ⚠️ A few clips: Check those moments ❌ Many clips: Reduce level at source
🎵 Drag & Drop your audio file onto the upload area below, or click to browse your computer.
Supported formats: WAV, AIFF, MP3, FLAC (up to 200MB)
⏳ The tool will analyze your entire file. This takes a few seconds depending on the file length.
You'll see a progress bar while it works.
📊 Once complete, you'll see:
🟢 Green = Good 🟡 Yellow = Check it 🔴 Red = Problem
▶️ Use the built-in player at the bottom to listen to your file.
Click on clip timestamps to jump directly to problem areas.
📄 Click the "Download PDF Report" button to save a professional report.
Great for your records or to share with clients/collaborators.
Need help interpreting your results or preparing your mix for mastering? I'm here to help. Reach out directly via WhatsApp or email.