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Project presentation

Transcribe a teacher speech to subtitles and allow students to correct misinterpreted words

Half time project achievement
final project achievement


  • Supervisors : Jérôme Maisonnasse
  • Members : BUI David / LECHEVALLIER Maxime / OUNISSI Sara

Involved Technologies

  • Meteor framework
  • jQuery
  • JavaScript
  • HTML5
  • CSS3
  • Bootstrap
  • MongoDB


Make an app usable in any browser (mainly Google Chrome)

Google API Speech

Key words : new paragraph, comma, dot

Not supporting long speech (over 2 minutes), have to reboot after that



Documents API specs :

Progress of the project

The project started January 11th, 2015.

Week 1 (January 11th - January 17th)

First interview with our supervisor Jérôme. We've learned more about our project and what is expected for the next weeks

  • Handling the project
  • testing Google API Speech
  • Making git repository

Week 2 (January 18th - January 24th)

Week 3 (January 25th - January 31th)

  • Microphone works only when a virtual server is installed, we try with apache (Lamp/Xamp)
  • Learning JavaScript
  • Learning HTML/CSS
  • Trying Bootstrap
  • is a website to edit youtube subtitles, might help

Week 4 (February 1st - February 7th)

  • Scrum
  • Trello
  • Trying to add grammar and key-words (like "OK Google") => Not possible

Week 5 (February 08th - February 14th)

Design patterns

  • Model-View-Controller (GoF) : This pattern is used to separate application's concerns. Our project is Web oriented program
  • Singleton (GoF) : Ensure a class has only one instance, and provide a global point of access to it.

Example : a teacher is the only one who can launch slides

  • Visitor (GoF) : Represent an operation to be performed on the elements of an object structure. Visitor lets you define a new operation without changing the classes of the elements on which it operates.

Example : students can edit the subtitles

  • State (GoF) : Allow an object to alter its behavior when its internal state changes. The object will appear to change its class.

Example : Microphone detection

Project work

Solving critical problems : the API is not working with ambient noise. When we are talking directly to the microphone the API is working fine.

Tests :

  • Fast talking : Dead after 1 minute
  • Slow talking (with interruptions) with music arround : Dead after 2 minutes
  • Slow talking : Dead after 2 minutes

Meeting with Jérôme to have new directions after a quick demo of the app.

Week 6 (February 15th - February 21st)

Studying, trying the demo chat, linking Reveal.js with

WebStorm is a Javascript IDE but too complicated too use for us

Week 7 (February 29th - March 6st)

Transmitting data from client to server with

Working on adding collaboration part (javascript database?)

Working the presentation

Week 8 (March 7st - March 13st)

Try to implemente Session in php

Searching for an easy way to store our data (which structure and which technologie)

Begin to implement our projet according to the model view controller Model

Week 9 (March 14st - March 20st)

Decision to switch to a Meteor projet

Learning of the Meteor framework with tutoriel on pdf and youtube

Week 10 (March 21st - March 27st)

Beginning of the implementation of our projet under the framework Meteor

For more security, decision to implemente all functions that modify the database in the server side

Features added on the client side:

  • Add/remove a course
  • Login

Features added on the server side:

  • Insert course data
  • Remove course data

Week 11 (April 28st - April 3st)

Establishment of the final data structure which is composed of several MongoDB collections:

  • Courses Collection
  • Slides Collection
  • Words Collection

Implementation of the Reveal package

Features added on the client side:

  • UI of adding a word or an option to a word in the note part thanks to mouse events

Features added on the server side:

  • Insert slide data
  • Insert word data on a specific position in the note
  • Add a word option to a specific word
  • Increment number of course's listener

Week 12 (April 4st - April 6st)

  • Establishment of a new tree
  • Learning and development router to navigate between pages
  • Learning and use of Bootstrap 3
  • Adding API Google Speech
  • Adding note beside Reveal slides in two mode: Edit and Read
  • Establishment of the collaborative part algorithm
  • Establishment of use restriction depending on whether the user is teacher or student
  • Retail, konami code, fun and joy