01
What this can prove
A known digital tone helps establish whether a path carries a selected frequency and channel.
Reference signal
Tone generator
Create a deterministic reference for tracing an audio path and repeating the same test later.
Before you begin
Start at a low device volume. No sound starts automatically. Use Stop all audio at any time.
Configurable reference
Tone controls
Set the exact digital tone, channel, duration and level. Nothing plays until you press Play.
Presets
StatusWeb Audio is unavailable in this browser.
02
What it cannot prove
It cannot establish physical SPL, hearing ability or the isolated performance of one component in a complete chain.
03
Privacy and safety
Signals and analysis stay in your browser by default. Browser dBFS is not physical SPL.
How to use this test
Keep the comparison controlled.
- 01
Choose one variable
Set the frequency, waveform, duration, route and conservative digital level before playback.
- 02
Keep device volume low
The dBFS setting controls the browser signal, not the physical loudness at your ear or in the room.
- 03
Repeat the same reference
Use unchanged settings when comparing cables, devices, apps or output paths.