KeyTestDEVICE DIAGNOSTICS
All tests
Runs locallyNo accountNo install

ONLINE HARDWARE TEST

Microphone Test

Check microphone level and clarity with a live waveform and a private local recording.

REAL-TIME INPUT ANALYSIS

Watch your voice come through.

See the waveform, check the level, then make a short private playback.

READY TO TEST
LIVE WAVEFORMWaiting for input
Waiting for inputStart the test, then speak normally.
INPUTWaiting for access
LIVE LEVEL—
PEAK—
SAMPLE RATE—
CHANNELS—

INPUT PROCESSING

Requested off for a cleaner hardware checkThe active values below come from the media track and may be unavailable.
Noise suppression
Not exposed
Echo cancellation
Not exposed
Automatic gain
Not exposed
Lowest observed level
Not measured

LOCAL DIAGNOSTIC REPORT

Microphone Test result

Start the input and speak normally to capture a measurable peak.

Not started
Input
Not active
Current level
Unavailable
PEAK
Not measured
Lowest observed
Not measured
Sample rate
Unavailable
CHANNELS
Unavailable
Playback sample
Not created

What this result supportsThat the browser received an audio input track and observed the reported live/peak levels during this session.

What it cannot proveCalibrated loudness, frequency response, speech intelligibility, persistent noise floor, hardware origin of distortion, or acoustic quality without listening to the sample.

ABOUT THIS TEST

Fast answers without installing software.

Check microphone level and clarity with a live waveform and a private local recording.

Browser limitation: Browser diagnostics provide practical signals but cannot replace physical inspection or professional repair.

Diagnostic input is processed locally for this test and is not uploaded by KeyTest.