bytebeat-score

This is a CLI bytebeat sound application with python3. Bytebeat is algorithmic sound generated from one line of code.

Dependencies install

• numpy
• pyaudio

$ pip install -r requirements.txt

Usage

limitations for bytebeat formula

limitation	operator
usable variable	t
mathematical operators	+, -, *, /, %, (, ), **
bitwise operators	<<, >>, &, |, ^, ~
relational operators	<, <=, >, >=, !=, ==

The above operators are enough for combining good sound formulas. In addition, support for two notations infix and postfix.

play sawtooth wave

$ python bytebeat.py "t"

Sampling rate: 8000 Hz, Playback time: 30 sec

It's very simple formula with t, enjoy the sound by only this.
Note: enclose bytebeat characters in double quotes (e.g. "t|t*2")

play and score melody

$ python bytebeat.py "t*((3+(t>>10&5))*(5+(3&t>>14)))>>(t>>8&3)" --score

Sampling rate: 8000 Hz, Playback time: 30 sec
Scoring now ... done.

Use score option, save this sound and a score file in ./scores directory. More example sounds in ./scores/examples directory.
Note: can be set the sound filename as score option's argument (e.g. ./scores/melody.wav)

postfix notation a.k.a "Reverse Polish Notation"

$ python bytebeat.py "t 10 >> 5 & 3 + t 14 >> 3 & 5 + * t * t 8 >> 3 & >>" --postfix

Use postfix option, can write formula in postfix notation. This formula is the same as the above section.

optional commands

option	feature
-h, --help	show this help message
-p, --postfix	postfix notation
-r, --rate	set sampling rate[Hz]
-t, --time	set playback time[seconds]
-s, --score	write bytebeat sound in wav

Reference

• Viznut's blog
  • Algorithmic symphonies from one line of code -- how and why?
  • Some deep analysis of one-line music programs.
• Kragen's text
  • Bytebeat — Kragen