Interactive spectrogram created using React.

The spectrum analyzer above gives us a graph of all the frequencies that are present in a sound recording at a given time. The resulting graph is known as a spectrogram. The darker areas are …

3D Spectrogram Flute

Use the SpectroDraw web app to draw, visualize, and sculpt sound directly on the spectrogram. Free, browser-based sound design.

Free Online Spectrogram Generator & Decoder Drop any audio file to instantly generate a spectrogram — a visual frequency-over-time map of your sound. Decode hidden patterns, convert images to …

Spectrogram of the spoken words "nineteenth century". Frequencies are shown increasing up the vertical axis, and time on the horizontal axis. The legend to the right shows that the color intensity …

Apr 10, 2026 · Online spectrogram for bioacoustics: bird songs, bat echolocation, whale calls. Measure, annotate, filter, export. Free, in browser.

Visualize the frequency spectrum of any audio file over time. Free browser-based spectrogram viewer with adjustable FFT, color palettes, and PNG export. Like Spek, but online.

Spectrogram Viewer – Online Audio Frequency Visualizer Analyze audio frequencies instantly with this free online spectrogram viewer. Visualize harmonics, overtones, transients, and noise patterns in …

Tool to perform spectral analysis of audio files (WAV, MP3, etc.) and display any hidden data in sound frequencies and their visualization.

Visualizes audio as a spectrogram to spot hidden patterns, tones, and messages embedded in sound.