Sweep Tool

Procedural local audio tool with white-noise sweep, independent frequency layer, session logging, waveform export, and built-in recording.

Audio: stopped Noise: off Frequency: off Live Freq: 0 Hz Live Speed: 0.0/s Meter: 0% Session: 00:00

This tool does not scan real radio. It generates procedural audio locally in the browser.

1. Press Power ON.

2. Turn White Noise Layer or Frequency Layer on.

3. Recording, waveform logging, and marks are available near the bottom.

White Noise Layer on White noise ON / OFF

Bandpassed moving noise layer.

Frequency Layer off Frequency ON / OFF

Independent steady tone layer.

Master Volume 35%

Overall output level.

Sweep Style random hop

How the white-noise sweep moves through the range.

Min Sweep Frequency 300 Hz

Low end of the sweep window.

Max Sweep Frequency 3400 Hz

High end of the sweep window.

Min Sweep Speed 4.0/s

Lower speed bound.

Max Sweep Speed 8.0/s

Upper speed bound.

Advanced Controls

Noise Type white

Noise source feeding the sweep filter.

White Noise Level 45%

Volume of the moving white-noise layer.

Noise Bed 18%

Steady background noise under the sweep.

Band Width (Q) 8.0

Higher Q is narrower and more focused.

Glide / Smoothness 25%

How smoothly the sweep moves between target values.

Randomness 10%

Adds movement variation and slight jitter.

Frequency Pitch 350 Hz

Pitch of the independent frequency layer.

Frequency Level 20%

Volume of the frequency layer.

Mark Type general

Label what you heard before saving the mark.

Session Log and Recorder

Recorder: idle Recorded: 0 KB Waveform Points: 0

Marks 0

No marks yet.

Marks include session time, clock time, mark type, and note. Waveform points are logged automatically while powered on.