01
What this can prove
A repeated audible change can locate where in the selected digital range the complete playback path behaves differently.
Frequency range
Frequency sweep
Move continuously between two frequencies and record repeatable dropouts, abrupt changes or channel differences.
Before you begin
Start at a low device volume. No sound starts automatically. Use Stop all audio at any time.
Frequency range
Sweep controls
Run a logarithmic sine sweep between two chosen frequencies and record whether the path changes or drops out.
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02
What it cannot prove
An uncalibrated acoustic sweep cannot prove flat frequency response or identify which component created the change.
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 a bounded range
Start with a moderate range and avoid raising device volume when an edge frequency is inaudible.
- 02
Listen for repeatable changes
Note a dropout, buzz or abrupt level change only if it occurs at the same part of repeated sweeps.
- 03
Change one path element
Repeat the identical sweep after one controlled cable, device or output change.