LOUDNESS / SHARPNESSHYPHA PUBLIC CORE
- Zwicker Loudness
- —sone
- Sharpness
- acum
BROWSER EXPERIENCE ·
Kirin OS / A FIRST LOOK
Drop.
Drop a track.
Explore loudness and hearing-related changes, then listen to the same moment. Experience the white stone and instruments from Kirin OS.
An early experience for Chrome on desktop. Not yet tested in Safari or on an iPhone. Audio stays on your device: no uploads, storage, or autoplay.
ON YOUR DEVICE
Your audio stays here.
No uploads · No storage · No autoplay02 / READMEASURE / LISTEN
See the shape of your track.
NO FILEYour results appear here.
Explore the waveform, loudness, and hearing-related features.WAVEFORM
Press Play to listen. Adjust playback volume on your device.
- Integrated loudness
- —LUFS
Whole-track loudness
- True Peak
- —dBTP
Maximum peak, including between samples
- Sample Peak
- —dBFS
Largest recorded sample value
- RMS
- —dBFS
Root-mean-square signal level
- Sample rate
- —kHz
Samples per second
- Bit depth
- —bit
WAV sample bit depth
- Loudness Range
- —LU
Spread of short-term loudness
LOUDNESS / 100 msM · 400 ms / S · 3 s
Read the Eye, VU, and measurements
The Eye depicts the whole-track measurements: 100 ms LUFS-M around the rim, LRA in the pupil, and mean Bark loudness in its wreath and colour. Playback changes the position light and pupil size. Colour is not an audio-quality rating.
VU uses each channel’s rectified 100 ms average. Choose a sine-wave reference from −12 to −20 dBFS for 0 VU. The setting is retained only for the current measurement. The lamp indicates a sample peak of at least −1 dBFS during the past 400 ms, not True Peak.
BARK / SPECIFIC LOUDNESS0–24 Bark
Which bands stand out?
Explore loudness across 20 hearing-related bands. This is a different measure from spectrum amplitude.
Band values and PSB
Conditions for hearing-related measurements
The calculation assumes 0 dBFS equals 1 Pa. It cannot measure actual room SPL or hearing safety. Channels are measured independently and averaged; whole-track means use all internal 2 kHz observations.
From a time or band of interest to a before-and-after comparison. Explore Hypha PRE / POST measurement
Collaboration
- Review the same version
- Compare received audio with the previous version at the same playback position. Check LUFS, True Peak, and whether the file matches.
- Keep comments and decisions
- Comment at a playback position and record review and version-adoption decisions. Your collaborator can write a response in the browser-based Listening Room and return it manually.
Perform with STAGE.
- Prepare sheets and the show
- This is a separate workflow from loudness measurement. Write lyrics, chords, and repeats in a song sheet, or import ChordPro. Choose the setlist and saved versions for the show in STAGE.
- Read the sheet on an iPad
- Transfer the PDF to an iPad on the same Wi-Fi with a one-use QR code. Save it on the iPad and display the chord-and-lyric sheet during the performance.
Version & listening
- Keep versions and compare
- Manage versions of each Work and A/B mixes or masters at the same playback position. Check each version’s LUFS, True Peak, and hearing-related features.
- Choose how to listen
- Hide names with Blind Compare, test whether you can distinguish versions with ABX, or focus on one track in Listening Mode. Choose the mode for your listening purpose.
Operation examples captured in August–September 2026. The current white-stone appearance differs. Each page explains the detailed steps and conditions.
Open a chord-and-lyric sheet example
An illustrative example at 120 BPM: C → Am → F → G. It is not beat or chord analysis of your audio. Lyrics entered here are never saved or sent.
This browser experience does not automatically analyse beats or chords. New tempo, metre, Key, and Chord candidates in app version 1.0.9 are undergoing quality verification; automatic adoption is not enabled.
1 / 4C
2 / 4Am
3 / 4F
4 / 4G
A website interaction example only: no STAGE saving, QR sharing, or viewing on another device. Clearing audio also clears these inputs.
Scope and accuracy checks
Explore waveform, sample peak, RMS, LUFS-I/M/S, True Peak, LRA, Zwicker Loudness, Sharpness, Bark specific loudness, PSB, the Eye, and VU. Automatic beat and chord analysis is not included in this public experience.
This page runs public ebur128 0.1.10 and Hypha psychoacoustic cores as WASM. Limited known-signal and independent-reference tests have been performed. This is not standards certification or a guarantee of full parity with product binaries. No private Kirin OS engine is distributed.
LRA is unavailable for tracks shorter than 3 seconds or when the signal is below the loudness gate. Values for tracks shorter than 60 seconds are provisional. Momentary loudness requires a full 400 ms window; short-term requires 3 seconds. Missing or failed measurements are never replaced with zero.
Supports 44.1/48/96 kHz, mono/stereo PCM or IEEE float WAV, up to 5 minutes, without a file-size limit. MP3, AIFF, RF64, and extensible WAV are not supported. The 12-second synthetic demo uses the same public calculations. Close the tab or clear to discard results.