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Enable Your Mic
Choose a microphone and begin the challenge without uploading an audio file.
How long can you hold a note? Sing one sustained vocal note and let the browser measure its duration, pitch stability and level stability directly from your microphone.
Allow microphone access, press Start Challenge and sing one comfortable sustained note. Timing begins when a sufficiently stable pitched sound is detected and stops automatically after the sustained voice ends.
This longest note singing challenge listens for a sustained pitched vocal sound rather than simply starting a stopwatch when you click a button. After microphone access is enabled, the tool waits for you to begin singing.
Once a stable pitched signal is detected, the attempt starts automatically. The detected starting pitch becomes the reference for that attempt, so you do not have to match a predetermined musical note.
While you sustain the sound, the browser tracks elapsed time, detected pitch and input level. When the stable vocal signal disappears for long enough to indicate that the note has ended, the timer stops and the attempt is analyzed.
Choose a microphone and begin the challenge without uploading an audio file.
Choose a comfortable pitch and sustain it naturally instead of forcing an extreme note.
The tool follows duration as well as changes in pitch and recorded signal level.
Compare the finished attempt with your longest result previously stored in this browser.
Holding a note longer is only one measurable part of the exercise. The challenge separately reports how much the detected pitch and recorded level changed during the sustain.
Duration is the detected length of the continuous sustained note. The timer begins after the vocal signal has been recognized as a stable pitched sound and ends when that sustained signal stops.
Pitch stability is represented by the variation of detected pitch around the attempt's central pitch. Smaller variation means the measured fundamental frequency remained more consistent.
Level stability describes variation in the recorded signal level during the note. It can reflect changes in vocal output, microphone distance, movement and other parts of the recording chain.
A sustained-note exercise can be a simple way to observe how you manage a continuous sung phrase. The goal of this browser challenge is not to determine how much air your lungs contain or diagnose vocal technique. It measures the audible note reaching the microphone.
For a useful comparison, choose a comfortable pitch and volume, keep a similar microphone distance and repeat the test under similar conditions. Changing the note, room, microphone position or input gain can change the measurement.
Do not push through discomfort, dizziness or vocal strain just to increase the timer. This is a singing challenge and practice tool, not a medical respiratory test.
A long note can still move in pitch. During the attempt, the analyzer converts detected fundamental frequency into musical pitch and measures movement relative to the sustained note's central pitch.
The result is expressed as pitch variation in cents. In twelve-tone equal temperament, 100 cents corresponds to one semitone. This makes it possible to describe relatively small pitch changes without requiring the attempt to begin on a specific note.
The level measurement follows the RMS level of the signal received by your microphone. The final level-stability value describes how much that measured level varied during the sustained portion of the attempt.
This is not a pure measurement of vocal technique. Moving closer to the microphone, turning your head, automatic processing in an operating system or audio device, room reflections and changes in microphone gain can all affect the recorded level.
Similar microphone distance, input gain and room conditions make personal comparisons more meaningful.
After a valid attempt, the tool can keep your longest detected duration as a personal record in this browser. That gives the hold a note singing challenge a simple repeatable goal without comparing your voice with somebody else's.
You can also use the Share Result control to share a short text summary where browser sharing is supported, or copy the result when direct sharing is unavailable.
The personal record is local to the browser and device where the challenge is used. Clearing browser storage or switching devices can remove or separate that record.
This page is specifically a sustained-note duration and stability challenge. Other Ronter Audio Lab tools answer different vocal questions.
Start the challenge and sing one comfortable sustained pitch. The tool measures the duration of the stable pitched signal detected by your microphone. Your result depends on your performance as well as recording conditions and signal detection.
No. Choose a comfortable sustained pitch. Once a stable pitched sound is detected, the analyzer uses the detected pitch from your own attempt as its reference.
After you start the microphone, the tool waits until it detects a sufficiently stable pitched signal for a short confirmation period. It then begins the measured attempt automatically.
A very brief detection dropout is tolerated so one momentary analysis failure does not immediately end the challenge. If the sustained pitched signal remains absent beyond that grace period, the attempt ends automatically.
It can be used as a singing breath-control exercise, but it does not directly measure lung capacity, airflow or respiratory health. It measures the sustained audio signal reaching the microphone.
Pitch stability summarizes variation in the detected fundamental pitch during the sustained note. Natural vibrato and intentional pitch movement can increase this value even when they are musically appropriate.
Level stability summarizes variation in the recorded RMS signal level during the note. Vocal dynamics, microphone distance, gain and audio processing can all influence it.
The challenge stores its personal-best duration in local browser storage when that feature is available. It is therefore tied to that browser rather than being a universal account record.
Yes. Strong background sounds, another voice or tonal noise can interfere with pitch detection. A relatively quiet environment and a clear microphone signal can make the measurement more reliable.
No. The challenge is not a reason to force a note or continue through discomfort, strain or dizziness. Stop the attempt whenever you need to.
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