EC2 Installation Walkthrough

Introduction

In this guide I will explain how to setup OpenDcd with Kaldi on EC and decode open source models based on Librivox corpus.

Machine Configure and Setup

   sudo add-apt-repository ppa:ubuntu-toolchain-r/test
   sudo apt-get update
   sudo apt-get install -y gcc-4.9 g++-4.9 cpp-4.9 subversion make zlib1g-dev automake libtool autoconf libatlas3-base

Due a bug in gcc 4.8 we installed gcc 4.9 and set hard links as the system default

   sudo ln -s /usr/bin/g++-4.9 /usr/bin/g++
   sudo ln -s /usr/bin/gcc-4.9 /usr/bin/gcc
   sudo ln -s -f bash /bin/sh

Install Kaldi

'''bash svn co https://svn.code.sf.net/p/kaldi/code/trunk kaldi cd kaldi/tools make cd ../src ./configure '''

For descent runtime performance it is essential to edit the kaldi.mk file and add the -O2 switch. Now just type make to build the Kaldi and optionally specify the number of cores.

  make -j4

Install OpenDcd

   git clone https://github.com/edobashira/opendcd.git
   cd opendcd/3rdparty
   make
   cd ../src/bin
   make -j4

Download Models

Build Cascade

Decode