Peak & Clipping Check
Finds the highest decoded sample value and looks for samples reaching or approaching digital full scale.
Use this free mastering checker to inspect a finished track for measurable technical issues before mastering or release. Analyze peaks, clipping, loudness, dynamics, stereo behavior and spectral extremes directly in your browser.
Drop a finished audio file below. The mastering analysis tool examines the decoded audio locally and creates a technical readiness report.
Choose an audio file to start the technical analysis.
Format support depends on your browser. WAV and MP3 are widely supported.A useful mastering checker should separate measurable audio properties from subjective opinions. This tool looks at the signal itself: how close its samples come to digital full scale, whether clipping-like conditions appear, how the peak level relates to average energy, how the left and right channels behave, and how energy is distributed across the frequency range.
That makes the report useful when you want to check your master before release or inspect a mix before sending it to a mastering engineer. It can identify things worth investigating without pretending that a number can decide whether the music sounds good.
Finds the highest decoded sample value and looks for samples reaching or approaching digital full scale.
Estimates the track's overall level so you can inspect how aggressively or conservatively the recording is being driven.
Compares peak and average signal energy to provide a crest-factor view of the recording's macro dynamics.
Compares left, right, mid and side energy to describe how much of the signal is shared between channels.
Measures the statistical relationship between the left and right channels and flags strongly negative correlation for inspection.
Creates a broad frequency profile to reveal unusually dominant sub-bass or high-frequency energy that may deserve another listen.
If you are preparing a mix for another mastering stage, the most useful question is not whether the file matches one universal target. Different music can legitimately have very different dynamics, spectral balance and peak behavior.
Instead, use the report to look for technical warning signs. A suspiciously high peak level, repeated clipping, extreme channel behavior or an unusual spectrum can give you a reason to return to the mix and investigate.
Use the Mix Analyzer for a broader mix-focused analysis.
An audio mastering checker can answer part of that question, but not all of it. It can examine the file for measurable technical characteristics. It cannot determine whether the vocal is emotionally right, whether the bass feels appropriate for the genre, or whether the master translates well on every playback system.
The most useful workflow is therefore to combine technical analysis with listening. If the report identifies a possible issue, listen to that part of the track again and decide whether it is intentional, harmless or something that should be corrected.
It tells you where to look. It does not make the creative decision for you.
The workflow is deliberately simple. Select a compatible audio file, let your browser decode it, then run the analysis. The utility reads the audio samples and calculates the measurements needed for the report.
Audio processing in this implementation happens on your device. The selected track is not uploaded by this tool, which also means processing speed depends partly on the file and your device.
Select the finished mix or master you want to inspect.
The browser examines waveform, level, dynamics, stereo relationship and frequency distribution.
Review the measurements and technical flags, then decide what deserves closer listening.
There is no single peak, loudness, dynamics or spectral profile that automatically makes every song “release ready.”
Genre, arrangement, artistic direction, delivery format and mastering choices all affect what an appropriate result looks like. For that reason, this mastering analyzer does not assign an artistic quality score.
A warning means that the measurement deserves attention. It does not automatically mean the track is wrong. Likewise, a report with no major technical flags does not guarantee that the master will sound good.
If you need to compare your track against another recording rather than inspect it in isolation, use the Reference Track Matcher .
Mastering readiness is only one part of audio analysis. Choose the tool that matches the question you are actually trying to answer.
It analyzes measurable properties of the decoded audio, including sample peaks, possible clipping, approximate overall level, peak-to-average dynamics, stereo channel correlation, stereo energy and broad spectral distribution.
It can identify technical characteristics that may deserve attention before release. It cannot determine artistic quality or guarantee how the song will translate across playback systems.
Yes. You can load the finished audio file and use the report as a technical pre-release check. Treat flagged measurements as reasons to investigate rather than automatic mastering instructions.
Yes, although a pre-master mix has different goals from a finished master. For a broader mix-specific inspection, the Mix Analyzer is the more focused tool.
Not by this implementation. File selection, decoding and analysis are performed with browser-side JavaScript. The code does not send the selected audio file to an upload endpoint.
No. A technical flag means that a measurement crossed a diagnostic threshold used by this tool. The musical context and your listening judgment still matter.
No. The value shown here is an estimate intended for the broader readiness report. For loudness-focused measurement, use the LUFS Meter.
No. Automated analysis can measure the signal and highlight possible technical concerns. A human engineer can also make contextual and creative judgments that cannot be derived from these measurements alone.
If your report raises questions or you want professional help with your audio, contact Ronter Sound and tell us what you are working on.
Contact Ronter Sound →