ISP Master

True-peak mastering meter · BS.1770-4/5
100% local · audio never leaves this machine
Drop a track to analyze
WAV or MP3 · drag & drop or click to pick a file
.wav · .mp3 · analysis runs fully offline in your browser
Decoding & analyzing…
reading file
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Judge against

Translation-Risk Score vs. universal safe master

.../ 100
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Lower risk = translates cleanly across systems & codecs.

    Waveform & inter-sample-peak markers click a marker to inspect · drag to zoom · scroll to zoom · ▶ to preview

    over ceiling (warn, dashed marker) over 0 dBFS (critical, solid marker)

    Loudness K-weighted · gated

    True peak 8× oversampled

    judged for:

    Dynamics

    Likely click / clip locations

    Per-platform playback verdict what each service will do to your master

    PlatformTargetGain appliedPerceivedTrue-peakVerdict
    Streaming services normalize to a target. Mastering louder than the target buys no volume. It just gets turned back down, costing dynamics for nothing.

    Spectral balance

    reference slope:

    Stereo & phase

    Correlation below 0 (red) = phase cancellation / mono-collapse risk.

    Before

    After