• 📈 Sweep Tone Generator

    Generate a continuously changing test tone between two frequencies. Use it to test speakers, headphones, subwoofers, frequency response, resonances, room acoustics, and audio equipment.

    -12 dBFS
    Additional Options
    Quick Presets
    20 Hz
    20 Hz 20 kHz
    Ready — choose your settings and start the sweep.
    🎧 What Is a Sweep Tone?

    A sweep tone gradually changes frequency over a specified range. Unlike a single-frequency test tone, a sweep allows you to listen to many frequencies continuously.

    Sweep tones are useful for finding speaker or headphone resonances, testing subwoofer response, identifying problematic room frequencies, and checking how an audio system behaves across the frequency spectrum.

    💡 Safety Tip: Start with a low volume. A frequency sweep can contain energy across a very large frequency range, and some systems may reproduce certain frequencies much louder than others. Never begin a sweep at a high listening level, especially when testing subwoofers or high-powered speakers.

  • A Sweep Tone Generator produces a tone that gradually moves from one frequency to another. It can be useful for musicians, producers, recording engineers, home-studio owners, and audio enthusiasts who want to test speakers, headphones, subwoofers, room acoustics, frequency response, and audio equipment.

    Unlike a single-frequency tone generator, a sweep lets you listen across an entire frequency range. This can make it easier to hear resonances, dips, rattles, buzzing, distortion, or frequencies that become unusually loud or quiet. Sweep tones are commonly used alongside spectrum analyzers for frequency-response testing.

    The logarithmic sweep is particularly useful for audio testing because it spends more time proportionally across the frequency spectrum, while a linear sweep increases frequency at a constant rate. The tool also includes optional frequency markers and presets for subwoofer, full-range, midrange, room/bass, and high-frequency testing.

    Tip: Always start at a low listening volume. A sweep can expose resonances that make certain frequencies dramatically louder than others, particularly with speakers, subwoofers, and untreated rooms. If you hear rattling, buzzing, or an unexpectedly loud frequency, stop the test and investigate rather than simply turning the volume up or down.