LFO JS

This project is a little and simple JavaScript library that will implement LFOs in JavaScript.

What is an LFO

LFO stands for Low Frequency Oscillator. It's basically just a device which oscillates between two values on a certain frequency and following a given waveform.

Note: In this library, there is no limitation concerning the frequency, but it can behave strangely at a high frequency

How to use it

#### Instantiation

First of all, include the LFO script before your other scripts.

``html

`

To create an LFO, you just have to create a new instace of LFO :

`javascript
var my_lfo = new LFO ();
`

The LFO function take an object as argument, containing these parameters :
- freq : the frequency of the oscillator
- amplitude : the amplitude of the oscillator
- waveform : the custom waveform function. This function take a number between 0 and 2PI as argument and must return a number between 0 and 1.

Example :

`javascript
var my_lfo = new LFO ({
freq: 1.3,
amplitude: 2,
waveform: function (x) {
if (x <= Math.PI) {
return -1;
} else {
return 1;
}
}
//Same as :
//waveform: "square"
});
`

This code will create a new LFO with a frequency of 1.3Hz, an amplitude of 2 and which will produce a square signal.

Note: Every parameter is optional

#### Waveform functions

There are some waveform functions that are preset in the library : sine (default value), triangle, square, sawtooth and noise.

#### Getting the current value

To retrieve the current value of an LFO, just use the value function :

`javascript
var v = my_lfo.value();
`
#### Changing parameters

To change parameters of an LFO, use the set function which takes the same argument as the constructor of the class :

`javascript
my_lfo.set({
freq: 0.7
});
``

TODO

- Clean up the code
- Make an ES6 module (that's going to be fun)