Waveform

Generate waveform data in JSON format from an audio file.

The generated JSON file is optimized for space. Thus, the precision is sufficient but not the most precise. The generated JSON structure only contains integers and not floats. Before getting passed to Waveform.js, values should be divided by 128.

Usage

waveform /path/to/my/audio.mp3 > waveform.json

Requirements

This required sox and the soxi binary which should be included with the sox distribution.

Installation

Debian

echo "deb http://apt.delatech.net/ squeeze main" >> /etc/apt/sources.list
curl https://raw.githubusercontent.com/delatech/gpg/master/delatech-public-key-sign.asc | apt-key add -
apt-get update
apt-get install sox libsox-fmt-mp3 waveform

OSX

brew tap delatech/delatech
brew install sox
brew install delatech/waveform

Anywhere with a valid Go installation

go get github.com/delatech/waveform

LICENSE

Based on work from Sunjin Lee.