Frequency & Noise Generator

LFC LAB

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About this app

Frequency & Noise Generator is a professional audio test tool for Android that plays test tones, frequency sweeps, white noise, pink noise, and brown noise. It is designed for audio engineers, sound technicians, speaker tuning users, creators, and anyone who needs quick reference signals for audio checks.

Enter a custom Hz value to play a pure tone, or choose a musical note and octave to check a specific pitch. Set start and end frequencies to generate linear or logarithmic frequency sweeps for checking speaker response, room response, and audio equipment output.

The app also includes practical noise generation. White noise is useful for full-band signal checks and masking tests. Pink noise provides a balanced octave-based sound for listening checks and room response work. Brown noise emphasizes low-frequency energy for checking low-end response and deeper noise profiles.

Main features
- Generate test tones with custom Hz input
- Choose tones by musical note and octave
- Create frequency sweeps with start and end frequency
- Use linear sweep or log sweep mode
- Play white noise, pink noise, and brown noise
- View a theoretical output spectrum
- Adjust fade in and fade out behavior
- Use light mode, dark mode, or system theme

Use cases
- Check speaker and headphone output
- Test audio equipment after setup or connection
- Review room, studio, and workspace response
- Create reference tones before audio work
- Compare white noise, pink noise, and brown noise playback

This app is a signal generator for fast audio testing and sound checks. It is not a replacement for calibrated measurement equipment. Actual output may vary depending on your Android device, speaker, volume level, and playback environment. High frequencies can be uncomfortable, so start with a low device volume.

Use Frequency & Noise Generator to create professional tone, sweep, and noise signals quickly on Android.

What’s new

Initial release of Frequency & Noise Generator.

- Generate test tones with custom Hz input.
- Create linear and logarithmic frequency sweeps.
- Play white noise, pink noise, and brown noise.
- Choose tones by musical note and octave.
- View the theoretical output spectrum.
- Adjust fade in/out and theme settings.