SecureCall is a system designed for phone call surveillance. This is done by recording calls and sending them to a localhost device (running linux or macOS). This is done to perform the process of speech to text conversion on a separate device The server uses node to receive the files convert them and then uses pocketsphinx to convert it to text and check for keywords This cn be used to determine the nature of the call and send notifications to the user via mail the nature is determined using a point based system. The hardware requirement to run this system are:

• A device running linux or macOS(eg any computer or laptop with linux, Rpi )
• An android smartphone if using the Android Interface for recording calls provided
• The server can be accessed by any other machine by http://you-ip-address:3000/ after running node file server.js by the html interface

There are two parts to running SecureCall

1. Server package
2. Android app

Unzip the package serverfile.zip

• https://cmusphinx.github.io/wiki/download/
• unzip and copy these folders as sphinxbase and pocketsphinx inside the serverfiles directory
• AS path../serverfiles/pocketsphinx and path../serverfiles/sphinxbase

Windows installation is not supported yet.

To build this module you need to have following dependencies:

• node at least 4.2(recommended version 5.12.0)

• cmake at least version 3.1

• cmake-js https://github.com/cmake-js/cmake-js (install with npm install -g cmake-js)

• swig at least 3.0.7

• pkg-config

• sphinxbase latest from github

• pocketsphinx latest from github

• ffmpe

• The node package has the following dependencies install separately if not found in node-modules

  • express-fileupload
  • body-parser
  • fluent-ffmpeg
  • express
  • fs
  • mail
  • cmake-js

Make sure that pocketsphinx is installed properly, adjust LD_LIBRARY_PATH if libraries are not found. You can test pocketsphinx with

* pocketsphinx_continuous -infile goforward.raw // Recognize goforward.raw file

first navigate into the server files directory and run

• npm init

note: This should generate a build folder if issues occur downgrade/upgrade node to v5.12.0 using commands

• sudo npm cache clean -f
• sudo npm install -g n
• sudo n 5.12.0

navigate into the nodefiles folder and run command

• node server.js

the server should start listening on port 3000 you can check by entering http://localhost:3000/ in the address bar of your browser

check your machine ip

• for macos
  • use network utility
• for linux use
  • ifconfig
• you can access the server from any device using the address
• http://you-ip-address:3000/
• eg. http://192.168.43.2:3000/
• use http://localhost:3000/upload for uploading files via different interfaces
• name the json structure as audio or change in the server.js
• req.files.audio to req.files.new-name