Estimated integrated loudness
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Audio Quality & Delivery
Audio Loudness and Delivery Inspector
Inspect local audio for sample peak, RMS, clipping, silence, channels and cautious delivery-readiness guidance with evidence you can export and review.
Free local audio evidence tool
Local audio evidence workspace
Awaiting audio intake
Choose an audio file to measure levels, clipping, silence, channels and delivery-readiness guidance locally.
Sample peak
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Clipping events
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RMS level
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Longest silence
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Channel balance
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Waveform overview
A bounded peak envelope will be built from decoded samples.
Level timeline
Windowed RMS, sample peak, silence and events will appear here.
Finding console and delivery comparison
Evidence, guidance comparisons and human-review status appear after successful local decoding.
Human review and privacy
All audio decoding, waveform measurement, analysis and report generation run locally in your browser. Your audio file is not uploaded to MicroIntent, stored or modified.
How to check an audio file’s loudness
Choose the file locally, inspect it, then compare the estimated integrated loudness and full-file RMS with your intended delivery guidance. The dashboard also preserves exact peak, clipping and silence evidence for human review.
Loudness versus peak level
Loudness estimates summarize sustained energy while sample peak is the largest decoded sample. A file can have a suitable estimated loudness yet have unsafe sample peaks, or the reverse, so both readings matter.
What audio clipping means
Clipping occurs when decoded samples reach the selected threshold. The tool groups adjacent or very close samples into evidence events, but it does not repair, normalize or alter source audio.
How silence and gaps are detected
The inspector uses bounded RMS windows with editable threshold and minimum duration settings. It reports leading silence, trailing silence and internal gaps; intentional quiet passages still need a listener’s judgement.
Why stereo balance matters
Stereo delivery can sound unintentionally lopsided when left and right RMS differ substantially or one channel is silent. This tool reports evidence-based RMS balance, not a phase-correlation score.
Podcast and video delivery guidance
Podcast speech and online video profiles provide editable production targets, peak limits and silence checks. They are starting points for a human workflow, not acceptance criteria for any platform.
Audiobook and broadcast-style guidance
Audiobook and broadcast-style profiles are cautious editable references. They do not certify Audible, ACX, ITU-R BS.1770, EBU R128, ATSC A/85 or any broadcaster requirement.
Why local audio processing protects recordings
All decoding, analysis and report generation happen in your browser. The tool has no upload route, server action, remote DSP, microphone access, audio analytics or AI API.
Difference between sample peak and true peak
Sample peak is measured from decoded audio samples and may not detect inter-sample peaks. True peak needs a validated reconstruction method, so this browser tool does not present one.
Difference between crest factor and Loudness Range
Crest factor is sample peak dBFS minus RMS dBFS. It is a simple dynamics indicator and is never presented as Loudness Range.
Why automated measurements still require human listening
Clicks, noise, intent, edits, stereo imaging and context cannot be accepted automatically. Complete the in-tool listening checklist using headphones and ordinary speakers before deciding on delivery.
Why this is not certified compliance
Estimated loudness and delivery comparisons are provided for production guidance. This version is not a certified broadcast-compliance meter. Results describe measurable properties of the decoded audio and do not guarantee acceptance by a receiving service.
Frequently asked questions
How do I check the loudness of an audio file?
Choose a local audio file, select Inspect, then review the estimated integrated loudness, RMS, sample peak, timeline and delivery comparison. The browser decodes and measures the file locally without uploading it.
What is LUFS?
LUFS is a loudness unit used by many delivery workflows. This tool labels its result Estimated integrated loudness because its browser-local estimator is not a certified standards-compliance measurement.
Is estimated loudness the same as certified LUFS measurement?
No. The estimator uses gated decoded-audio energy for production guidance but does not claim certified ITU-R BS.1770, EBU R128, ATSC A/85 or platform measurement compliance.
What is the difference between sample peak and true peak?
Sample peak is the largest decoded PCM sample. True peak estimates possible inter-sample peaks after reconstruction. This tool reports sample peak and explicitly does not claim true-peak measurement.
How does the tool detect clipping?
It finds decoded samples at or above the editable clipping threshold, groups adjacent or very close samples into events, and records each event's time, channel, count and maximum value.
Can it detect long silence and possible dropouts?
Yes. It evaluates bounded RMS windows against editable silence and minimum-duration thresholds, then reports leading silence, trailing silence and internal long gaps. Quiet intentional sections can be classified as silence, so listening review remains necessary.
Can it check stereo channel balance?
For stereo audio, it compares full-file left and right RMS, reports the difference and dominant channel, and flags silent or near-silent channels. It does not claim phase-correlation analysis.
Can it measure DC offset?
Yes. It calculates the mean decoded sample value for each channel and flags values above the editable review threshold. DC offset is a measurable waveform bias and is not automatically audible.
What audio formats can the browser decode?
The intake supports WAV, MP3, M4A, AAC, OGG and FLAC where the active browser can decode the codec. Extension and MIME declarations are checked, but successful local decoding is the final validation.
Is my audio uploaded to MicroIntent?
No. Audio decoding, waveform measurement, analysis and report generation run locally in the browser. The audio file is not uploaded, stored, modified or sent to an AI service.
Can I export a professional audio report?
Yes. Successful inspections can generate a print-ready Delivery readiness report, genuine Word DOCX, Markdown, JSON evidence, event CSV, finding CSV and a copied summary. Exports contain evidence, not raw PCM or audio contents.
Does a good result guarantee platform or broadcast acceptance?
No. Results describe measurable decoded-audio properties and selected production guidance. They do not guarantee acceptance by a broadcaster, streaming service, podcast platform, audiobook service or other delivery system.