Generate pure audio tones with sine, square, sawtooth, and triangle waveforms. Create multiple oscillators, binaural beats, and export as WAV.
Generate pure tones at any frequency from 20 Hz to 20,000 Hz. Select a waveform shape, sine, square, triangle, or sawtooth, set the frequency, and play. Useful for testing speakers, calibrating equipment, ear training, and tinnitus frequency matching.
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Trim, cut, and slice audio files with interactive waveform visualization. Drag handles to select portions, use keyboard shortcuts, zoom and pan, preview selection before export. Supports MP3, WAV, OGG, AAC.
Real-time audio frequency spectrum analyzer and visualizer. View frequency bars, waveform, and spectral display. Supports microphone input and file playback with multiple color themes.
Combine multiple audio files into one track. Drag and drop to reorder, merge MP3s, WAVs, and other formats. Create seamless audio compilations online.
You need a clean 440 Hz reference tone to tune an instrument or test speakers.
Input
sine · 440 Hz · −12 dBFS · 5 s
Output
A pure A4 sine tone, playable and downloadable
A mathematically generated sine has no harmonics, so it is an honest tuning and test reference unlike a recorded note. Waveform, frequency, and level are exact, which matters for calibration and hearing tests.
Generate pure tones at any frequency from 20 Hz to 20,000 Hz. Select a waveform shape, sine, square, triangle, or sawtooth, set the frequency, and play. Useful for testing speakers, calibrating equipment, ear training, and tinnitus frequency matching.
Sweep through frequencies to check if your speakers reproduce the full audible range.
Learn to identify specific frequencies by ear, a useful skill for audio engineers and musicians.
Audio is decoded and processed locally with the Web Audio API. Your files are never uploaded to a server.