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Line 127: − Note 1: Sayamindu has pointed me to XTEST extension as well which seems to be the easier way. I'll do some research on that and write back my findings in this section. It has useful routines like XTestFakeKeyEvent, XTestFakeButtonEvent, etc which will make life more easier in this task. − − Note 2: Bemasc suggested I include the single character recognition (voice typing) in command mode by treating letters as commands to type out the letters and have the dictation mode exclusively for word dictation to avoid ambiguity in dictation mode for words like tee, bee etc. + + + + + Line 163:
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fix camelcase links
Ans: Yes, I was introduced to Open Source through GSoC last year where I worked on Bootlimn: Extending Bootchart to use Systemtap for The Fedora Project. ( http://code.google.com/p/bootlimn/ ) or ( http://code.google.com/p/google-summer-of-code-2008-fedora/ ). I am currently working on the following projects.
Ans: Yes, I was introduced to Open Source through GSoC last year where I worked on Bootlimn: Extending Bootchart to use Systemtap for The Fedora Project. ( http://code.google.com/p/bootlimn/ ) or ( http://code.google.com/p/google-summer-of-code-2008-fedora/ ). I am currently working on the following projects.
#Introducing Speech Recognition in OLPC and making a dictation activity. ( http://wiki.laptop.org/go/Speech_to_Text )
#Introducing Speech Recognition in OLPC and making a dictation activity. ( http://wiki.laptop.org/go/Speech_to_Text )
#Introducing Java Profiling in Systemtap.(A work from home internship for Red Hat Inc.). This project involved extensive research which took most of the past 4 months I have been working on it. Coding has just begun.
#Introducing Java Profiling in Systemtap (A work from home internship for Red Hat Inc.). This project involved extensive research which took most of the past 4 months I have been working on it. Coding has just begun.
#A sentiment analysis project for Indian financial markets. (My B. Tech major project that I plan to release under GPLv2.) I can put up the source code on https://blogs-n-stocks.dev.java.net/ after mid-April when I am done with my final evaluations in my college.
#A sentiment analysis project for Indian financial markets. (My B. Tech major project that I plan to release under GPLv2.) I can put up the source code on https://blogs-n-stocks.dev.java.net/ after mid-April when I am done with my final evaluations in my college.
I have been working towards achieving this goal for the past 6 months. The task can be accomplished by breaking the problem into the following smaller subsets and tackling them one by one:
I have been working towards achieving this goal for the past 6 months. The task can be accomplished by breaking the problem into the following smaller subsets and tackling them one by one:
# '''''Port an existing speech engine to the less powerful computers like XO.''''' This has been a part of the work that I have been doing so far. I chose Julius as the Speech engine as it is lighter and written in C. I have been able to compile Julius on the XO and am continuing to optimize it to make it work faster. Also XO-1 is the bare minimum case on which I'll be testing it. If it works on this it will most certainly work anywhere else.
# '''''Port an existing speech engine to less powerful computers like XO.''''' This has been a part of the work that I have been doing so far. I chose Julius as the Speech engine as it is lighter and written in C. I have been able to compile Julius on the XO and am continuing to optimize it to make it work faster. Also XO-1 is the bare minimum case on which I'll be testing it. If it works on this it will most certainly work anywhere else.
# '''''Writing a system service that will take speech as an input and generate corresponding keystrokes and then proceed as if the input was given through the keyboard.''''' This method was suggested by Benjamin M. Schwartz as a simpler approach as compared to writing a speech library in Python (which would use DBUS to connect the engine to the activities) in which case changes have to be made to the existing activities to use the library.
# '''''Writing a system service that will take speech as an input and generate corresponding keystrokes and then proceed as if the input was given through the keyboard.''''' This method was suggested by Benjamin M. Schwartz as a simpler approach as compared to writing a speech library in Python (which would use DBUS to connect the engine to the activities) in which case changes have to be made to the existing activities to use the library.
# '''''Starting with recognition of alphabets of a language rather than full-blown speech recognition.''''' This will give an achievable target for the initial stages. As the alphabet set is limited to a small number for most languages, this target will be feasible considering both computational power requirements and attainable efficiency.
# '''''Starting with recognition of alphabets of a language rather than full-blown speech recognition.''''' This will give an achievable target for the initial stages. As the alphabet set is limited to a small number for most languages, this target will be feasible considering both computational power requirements and attainable efficiency.
# Writing a system service that has support for recognition of characters and a demonstration that it works by running it with Listen and Spell.
# Writing a system service that has support for recognition of characters and a demonstration that it works by running it with Listen and Spell.
# Introduce modes in the system service. Dictation mode will process input as a stream of characters as described in deliverable 1 and a new mode called command mode will process the audio input to recognize a known set of commands.
# Introduce modes in the system service. Dictation mode will process input as a stream of characters and send corresponding keystrokes and command mode will process the audio input to recognize a known set of commands.
# Make a recording tool/activity so Users can use it to make their own models and improve it for their own needs.
# Make a recording tool/activity so Users can use it to make their own models and improve it for their own needs.
Dictation Mode:
Dictation Mode:
This can be done via simple calls to the X11 Server. Here is a snippet of how that can be done.
In this mode, the users speech will be recognized and the corresponding keystrokes will be sent as is. This can be done via simple calls to the X11 Server. Here is a snippet of how that can be done.
// Get the currently focused window.
// Get the currently focused window.
The above code will send one character to the window. This can be looped to generate a continuous stream (An even nicer way to do this would be set a timer delay to make it look like a typed stream).
The above code will send one character to the window. This can be looped to generate a continuous stream (An even nicer way to do this would be set a timer delay to make it look like a typed stream).
Command Mode:
Command Mode:
Similarly, a whole host of events can be catered to using the X11 Input Server. Words like "Close" etc (which will be defined in a list of commands that the engine will recognize) need not be parsed and broken into letters and can just be sent as events like XCloseDisplay().
Similarly, a whole host of events can be catered to using the X11 Input Server. Words like "Close" etc (which will be defined in a list of commands that the engine will recognize) need not be parsed and broken into letters and can just be sent as events like XCloseDisplay().
'''''Note 1: Sayamindu has pointed me to XTEST extension as well which seems to be the easier way. I'll do some research on that and write back my findings in this section. It has useful routines like XTestFakeKeyEvent, XTestFakeButtonEvent, etc which will make life more easier in this task.'''''
'''''Note 2: Bemasc suggested I include the single character recognition (voice typing) in command mode by treating letters as commands to type out the letters and have the dictation mode exclusively for word dictation to avoid ambiguity in dictation mode for words like tee, bee etc.'''''
All of this basically needs to be wrapped in a single service that can run in the background. That service can be implemented as a Sugar Feature that enables starting and stopping of this service.
All of this basically needs to be wrapped in a single service that can run in the background. That service can be implemented as a Sugar Feature that enables starting and stopping of this service.
Major Components:
Major Components:
# A language model browser which shows all the current samples and dictionary. Can create new ones or delete exisiting ones.
# A language model browser which shows all the current samples and dictionary. Can create new ones or delete existing ones.
# Ability to edit/record new samples and input new dictionary entries and save changes.
# Ability to edit/record new samples and input new dictionary entries and save changes.
The coding will be done in C, shell scripts and Python and recording will be done on an external computer and the compiled model will be stored on the XO. I own an XO because of my previous efforts and hence I plan to work natively on it and test the performance real time.
The coding will be done in C, shell scripts and Python and recording will be done on an external computer and the compiled model will be stored on the XO. I own an XO because of my previous efforts and hence I plan to work natively on it and test the performance real time.
The recording utility will be implemented using PyGTK for UI and <code>aplay</code> and <code>arecord</code> for play and record commands.
----
----
'''Fourth Week:'''
'''Fourth Week:'''
* Add a few basic commands.
* Implement the mode menu.
* Implement the mode menu.
* Add command mode.
* Put the existing functionality in command mode and make provisions of the dictation mode.
'''Milstone 1 Completed'''
'''Milestone 1 Completed'''
'''Fifth Week:'''
'''Fifth Week:'''
* Complete the interface
* Complete the interface
* Start writing code for the model browser and recorder.
* Start writing code for the language browser and recorder.
'''Sixth Week:'''
'''Sixth Week:'''
* Complete the language model browser.
* Complete the language browser.
* Write down the recording and dictionary creation code for the tool.
* Write down the recording and dictionary creation code for the tool.
* Package everything in an activity.
* Package everything in an activity.
'''Infinity and Beyond:'''
'''Infinity and Beyond:'''
* Continue with pursuit of perfecting this system on Sugar by increasing accuracy, performing algorithmic optimizations and making new Speech Oriented Activities. :)
* Continue with pursuit of perfecting this system on Sugar by increasing accuracy, performing algorithmic optimizations and making new Speech Oriented Activities.
If my mentor is not around,
If my mentor is not around,
# The first thing I will do is try to Google.
# The first thing I will do is try to Google.
# If I cannot find a solution, I will more specifically go through the Mailing list archives wikis and forums of Sugarlabs, Julius or Xorg depending on where I am stuck.
# If I cannot find a solution, I will more specifically go through the Mailing list archives wikis and forums of Sugar Labs, Julius or Xorg depending on where I am stuck.
# If I can still not find a solution, then I will ask on the respective IRC channels and Mailing Lists.
# If I can still not find a solution, then I will ask on the respective IRC channels and Mailing Lists.
===Miscellaneous===
===Miscellaneous===
[[Image:SatyaScreenshot.png|thumb|right| Screenshot]]
[[Image:SatyaScreenshot.png|thumb|right| Screenshot]]
Q1. '''We want to make sure that you can set up a [[DevelopmentTeam#Development_systems|development environment]] before the summer starts. Please send us a link to a screenshot of your Sugar development environment with the following modification: when you hover over the XO-person icon in the middle of Home view, the drop-down text should have your email in place of "Restart."'''
Q1. '''We want to make sure that you can set up a [[Development Team#Development_systems|development environment]] before the summer starts. Please send us a link to a screenshot of your Sugar development environment with the following modification: when you hover over the XO-person icon in the middle of Home view, the drop-down text should have your email in place of "Restart."'''
Ans: Screenshot on right.
Ans: Screenshot on right.