neeaagh / metronome

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#Web Audio Metronome

A simple, bare bones javascript metronome that utilizes the Web Audio API.

Web Audio is essential in creating a true metronome that always stays on beat. It does this by accessing the hardware clock through the AudioContext object. This is recommended instead of using setTimeout(), where the stabilty and precision of the beat will vary during times of heavy rendering, garbage collection, and anything else in the main javascript thread.

##Setup

Include metronome.js in your page and place tick.mp3 in the same directory.

##Usage

Initialization is as simple as:

var metronome = new Metronome(120);

This will create a metronome with a tempo of 120 beats per minute and will utilize tick.mp3 as the tick sound.

Use your own tick sound with:

var metronome = new Metronome(120, 'path_to_your_audio_file.mp3');

Call metronome.start() to start and metronome.stop() to stop. Feel free to change the tempo while the metronome is running with metronome.tempo = 180.

Issues, forks, and pull requests are all welcome!

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