# soundtrack.optical

[Download library](https://github.com/sixteenmillimeter/SoundtrackOptical/archive/master.zip)

Library for generating 16mm optical soundtracks with Processing.

Install library by downloading library as .zip, uncompressing and [placing SoundtrackOptical in your Processing library directory](https://github.com/processing/processing/wiki/How-to-Install-a-Contributed-Library). Note: When extracting the .zip, the folder may be named "SoundtrackOptical-master" and should be renamed "SoundtrackOptical" before installing. Start up (or restart) Processing to use this library in a sketch.

Supports mono audio only (at the moment, feel free to contribute).

Draws various kinds of 16mm soundtracks. [Read about them here.](http://www.paulivester.com/films/filmstock/guide.htm).

* unilateral
* *dual unilateral (in progress!)*
* single variable area
* dual variable area
* multiple variable area (Maurer)
* variable density

### Example Usage

```java
import processing.sound.*;
import soundtrack.optical.*;

SoundtrackOptical soundtrack;

String soundtrackFile = "../../data/barking.wav";
int dpi = 2400;
float volume = 1.0;
String type = "dual variable area";
String pitch = "long";
boolean positive = true;

void setup() {
  size(213, 620, P2D);
  frameRate(24);
  soundtrack = new SoundtrackOptical(this, soundtrackFile, dpi, volume, type, pitch, positive);
}

void draw () {
  soundtrack.draw(0, 0);
}
```

### Alternate usage

Use the `frame(int x, int y, int frameNumber)` method to draw specific frames--used for laying out multiple frames of soundtrack on a single screen.

```java
void draw () {
	soundtrack.frame(0, 0, frameCount);
}

```