Free Online Audio Visualizer: Ten Ways to See a Song, Saved as Video

An audio visualizer turns sound into moving pictures. The one in the AIKIZI Lab listens to your whole song once before it plays, so every picture is tied to the exact second you hear: the spectrum, the beats, the loudness and how bright the sound is. It draws on your graphics card, and it can save the result as an MP4 with your song in it.

There are ten modes. Eight of them have a page of their own, so you can open the one you want directly.

The eight with a page of their own

Every picture below is the same moment of the same song, the sample track Mystic Breeze at 1:35, drawn by each mode.

Audio visualizer: Spectrum

A ring of 72 bars, low notes at the top, with a thin echo of the spectrum half a second earlier. The hub for all eight.

Music visualizer: Particles

Tens of thousands of particles, each tied to one slice of the spectrum. They circle on the song's loudness, so a loud passage races and a quiet one drifts.

Microphone visualizer: Waveform ring

The sound wave itself, bent into a circle, with the recent spectrum around it. Made for the microphone: speak, sing or clap and it answers at once.

Sound visualizer: Fluid

Colour folding like ink in water. The currents move with the loudness, the bass folds them deeper and the high notes light their edges.

Spectrogram

Time runs left to right over the last twelve seconds, pitch from 40 Hz at the bottom to 16 kHz at the top, brightness is loudness.

Sound terrain

The spectrum as mountain ridges: the front ridge is now, the ones behind reach three seconds back, bass rising in the middle.

Sound threads

Twenty-eight threads, one per slice of the spectrum, each drawn over the last six seconds with bass at the bottom. A loud slice rises and thickens.

ASCII audio visualizer

The spectrum falls down the screen as characters, from a blank space for a quiet pitch up to @ for a loud one.

How to make a video of a song

Step 1 - Choose the sound

Open the audio visualizer and press Play the sample, or drop your own MP3, WAV, M4A, FLAC or OGG file on the picture. The song is listened to once, start to end, which takes a second or two.

Step 2 - Pick a mode and a look

Switch between the ten modes while the song plays. A look sets the colours: Jade, Ember, Aurora, Sunset, Rose, Cobalt, Ice, Brass, Ink, or Paper for a light page. Under the presets is a colour bar: drag a colour along it, click the bar for a new one, double-click one away, and set the ground beside it. Response sets how hard the picture moves, and Seed re-draws the particles, threads and ink in a new arrangement.

Step 3 - Save it

Save PNG gives you the picture on screen at 1920 × 1080. Save video draws every frame of the song at 60 frames a second, in 1080p or 4K (3840 × 2160), adds the song as the sound track and saves an MP4 you can post anywhere. It takes about as long as the song, often less.

What is free

• Every mode, the microphone, your own songs and PNG pictures, with nothing to sign up for.
• The video with the sound, in 1080p or 4K, for the whole song however long it is. It asks you to sign in with Google first.
• No watermark, on the video or on the picture.

Which mode for which song

A song with a strong beat reads best as Spectrum or Particles, where every kick moves the picture. Ambient and acoustic music suits Fluid or Threads, which follow the slow shape of the sound. A voice or a podcast suits the Waveform ring. To study a sound, a bird call or an instrument's notes, use the Spectrogram: a held note is a flat line and a drum hit is a short vertical stripe.

Read the song first with Sound Decode

AIKIZI's Sound Decode analyzes uploaded audio across 9 classification classes, from genre, tempo and key to mood, texture and production era. Knowing a track is slow and wide helps you choose Fluid or Threads before you start; knowing it is fast and compressed points to Particles.

Google sign-in. Sound Decode is on the Pro plan.

Try it

Drop a song and watch it become a picture, then save it as a video with the sound.

Open the audio visualizer    Browse all Lab tools