Installing Latest CMUSphinx in Ubuntu18.04

Help Taken from this tutorial. In addition I am adding screenshots. I am making this for my students who are beginners or Ubuntu and CMUSphinx. I will make it as simple as possible.

If you are still having difficulties feel free to comment

First we need dependencies, Run this command in Terminal to install the dependencies.

sudo apt-get install gcc automake autoconf libtool bison swig python-dev libpulse-dev

If you already have installed some of them, you may skip them from command.

Installing CMU-SPHINX

We have to install sphinxbase first

For that purpose I will create directories witk mkdir command which is used to create a directory.

Speech/CMUSphinx

CMUSphinx will be parent directory which will hold sphinxbase,sphinxtrain and pocketsphinx directories.

Now we need to clone it from GitHub for that purpose we require git.

To check if you already have git or not. Type

git --version

If it is not installed install it with

sudo apt-get install git

I already have git installed so I am cloning directly.

git clone https://github.com/cmusphinx/sphinxbase.git

In other words we are downloading sphinxbase from github. If you are having problem with this step you may manually download and extracts it in your OS.

Clone Complete

GUI View

When clone completed it means we have downloaded it. we may see it in GUI view.

type ./autogen.sh and press enter.
After its completion type make and press enter.
After its completion type sudo make install and press enter.

As shown in screenshots below

./autogen.sh

make

sudo make install

After this process Sphinx Source is installed but it have some error as shown in picture below.

you may type sphinx_lm_convert and check on your own.

Open file named ld.so.conf located in root/etc full path is /etc/ld.so.conf by default it will be like below picture.

Note: You will need super user permissions to open these folder and file

add /usr/local/lib to the file and save it. As picture below.

Run the sudo ldconfig and check again with sphinx_lm_convert

If you get screen look like above picture. Problem solved...

You have installed Sphinxbase. Now next step is to install pocketsphinx. We will clone it from github as we did sphinxbase. Go into folder where you want to download it and run the command.

git clone https://github.com/cmusphinx/pocketsphinx.git

After completion of this step here is the screenshot below.

First change your working directory with cd pocketsphinx

now its time to run the command ./autogen.sh as shown in picture below. so type the command and press enter.
After completion of this process run make command.
Type make and press enter.
When make will complete then run sudo make install
After these three steps pocketsphinx is installed.

Pictures are shown below.