STREAMING PREVIEW

Check streaming loudness and codecs.

Hear loudness normalization and check codec headroom before release.

Choose your master

WAV, FLAC, MP3 or AIFF · max 40 MB

BEATZUCKER AUDIO LAB

Preview streaming loudness and real codecs

Apply measured platform normalization in real time and create actual AAC or MP3 files for level-matched A/B/C comparison with encoded true-peak measurement.

Real-time platform gain

Actual AAC and MP3 preview

Post-encode true peak

PRACTICAL EXAMPLE · ILLUSTRATIVE, NOT A TEST RESULT

Your loud master sounds unexpectedly quiet on streaming platforms.

Try this: Choose a platform, compare original and normalized playback, then generate an actual AAC or MP3 comparison.
How to interpret it: Example: −9 LUFS to −14 LUFS means a calculated 5 dB reduction, not degraded sound. Measured codec peaks help check headroom; platform presets remain estimates.

How it works

Analyze the master
Choose platform and codec
Compare original, normalization and encoded mode

Frequently asked questions

Will Spotify always turn a quiet track up?

Playback normalization depends on platform and user settings. A quiet master is not always raised fully to the nominal target.

Is mode C actually encoded?

Yes. Mode C plays a real AAC or MP3 file created with FFmpeg.

Why can true peak rise after encoding?

Lossy reconstruction can create new inter-sample peaks.