Bytebeat: Make Music with Code

t*(42&t>>10)

That one line is the whole song.

Bytebeat turns a formula straight into sound. It evaluates your expression while t counts up from zero, one step at a time, and writes the result out as the waveform. No synthesizer, no audio files, no samples. The formula is the music.

■ Edit while it plays
- Rewrite the formula without stopping playback. t keeps running
- Change a single character and the song becomes something else
- A keypad holding only the characters that appear in bytebeat formulas, so one tap is one character

■ See the waveform
- An oscilloscope draws the samples that are actually playing
- Traces are aligned to the rising edge, so the wave stays still instead of scrolling
- Instruction count and stack depth are shown too

■ 29 famous formulas
- Includes the one-liners from the experiments viznut published in 2011
- Save the ones you like to favorites with your own names

■ Three modes
- Bytebeat: result & 255 mapped to 0...255, the way the original sounded
- Signed: treated as signed 8-bit
- Floatbeat: the result used directly as a -1...1 waveform, where sin and cos come alive

■ Change the speed of t
- 500 to 48000 Hz. The original bytebeat ran at 8000 Hz
- Slower runs lower, faster runs higher

■ Export to WAV
- 8-bit, 8000 Hz, mono, which is exactly what bytebeat is
- 10 seconds, 30 seconds, 1 minute or 3 minutes

■ What you can write
- The variable t, and the constants PI and E
- Arithmetic, bitwise operators, shifts, comparison, logic, the ternary operator
- sin cos tan asin acos atan abs floor ceil round sqrt exp log sign int pow min max atan2 mod
- Everything is computed in Double and rounded to 32-bit integers only for bitwise operations and shifts. This matches JavaScript's ToInt32, so formulas you find on the web play as they are

■ No connection
- No account to create
- No ads, no tracking
- The app never connects to the internet. It works on a plane

Many of the presets come from the experiments Ville-Matias Heikkila (viznut) published in 2011.