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Noise Adaptive Training for Robust Automatic Speech Recognition


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Noise Adaptive Training for Robust Automatic
Speech Recognition

Published in: Education, Technology
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Noise Adaptive Training for Robust Automatic Speech Recognition

  1. 1. Speech RecognitionBy: Rahim KeshwaniSainish Momin
  2. 2. What Exactly is SpeechRecognition?• Speech Recognition is the process oftranslating spoken words into textwords on the computer.• Through a speech recognitionprogram/application, the computer isable to process words you say andturn them into text on the screen justas if you had typed them on thekeyboard.
  3. 3. How Speech RecognitionCan Benefit StudentsDictation has the potential toimprove the writing performance ofstudents with learning disabilities byremoving the barriers created bythe difficulties with mechanics.
  4. 4. Speech RecognitionTo support quality of writingRemoves the motor demands of writingWritten Productivity Profile = difficulty with bothwriting & keyboardingMore restrictiveRequires quiet environment, consistency is moreimportant than articulationTypically not used for note taking, but for homeworkand independent written work
  5. 5. Speech RecognitionTo support accessFor students who are not able to physicallyaccess the keyboard and mouseRequires quiet environment, consistency is moreimportant than articulationMost likely require a program that provides fullcontrol of the computer (i.e. Dragon NaturallySpeaking)
  6. 6. Benefits and ChallengesVisual MotorSpellingErgonomicsHands-free useEnduranceConcentration andattentionReading and speechPronunciation andarticulation
  7. 7. Cognitive Skills• Proficiency in the use of speechrecognition requires good levels ofconcentration, memory and other cognitiveskills. In order for a student to use speechrecognition independently, good cognitiveskills are essential for memorizingcommands as well as making effective useof correction strategies.
  8. 8. Consistency of SpeechConsistency of speech and pronunciation is one of the mostimportant prerequisites for success in using speechrecognition. As long as any user is able to say words andphrases in the same or similar manner each time, speechrecognition programs can learn to recognize individualpatterns of speech. way each time.The users voice quality, such as volume and pitch, andbreath control should also be taken into account.The bottom line in terms of speech, is that it should beintelligible and consistent, but it need not be perfect in termsof articulation, pronunciation and quality.
  9. 9. Reading and WritingStudents who read at a third-grade level orhigher, and who achieve scores of 1 on mostof the items on the evaluation form, haveextremely high potential for using speechrecognition independently. In addition thosestudents who are able to accurately isolateword recognition errors and makecorrections/edit their work will do well withspeech-recognition.
  10. 10. Student Evaluation Form -Free
  11. 11. QIAT ResourceQuality Indicators for Assistive Technology ServicesThis documentcontainsinformation fromvarious sources onhandwriting and/orkeyboarding rates.
  12. 12. Speech Recognition: MS Office 2003Open MS Word→ Tools → Speech• This enables the language bar for bothspeech-to-text and text-to-speech options• You will be guided through training needed tocreate a user voice profile (15 minutes)• You will need a microphone• Can dictate directly into MS Office, not otherapplications
  13. 13. Built into the Operating SystemOpen Speech Recognition by clicking the Startbutton , clicking Control Panel, clicking Easeof Access, and then clicking SpeechRecognition.Click Set up microphone, follow theinstructions in the wizard.Dictate into almost any application (i.e. wordprocessing, internet).Speech Recognition –Vista and Windows 7
  14. 14. Denise DeCoste’s WrittenProductivity Profile
  15. 15. Microsoft SpeechRecognition – Windows 7
  16. 16. Dragon NaturallySpeaking
  17. 17. Voice Recorder withDragon Software
  18. 18. Dragon Dictate foriPhone/iPad
  19. 19. Dragon RemoteMicrophone
  20. 20. Via Voice
  21. 21. Speak Q
  22. 22. Tazti Speech Recognition forWindows XP and Windows 7Tazti (pronounced tasty)features include jot-a-note dictation, advancedvoice search internetsearch sites, playing yourfavorite PC games,controlling iTunes,bookmark control, & webnavigation. Create anduse your own speechcommands.
  23. 23. My Voice Controller• My Voice Controller allows you to emulatemouse and keyboard inputs by using yourvoice.• Common uses for this software are gamingand assistance for the disabled/injured.• This software is free and is compatible withXP and Vista.
  24. 24. e-Speaking Voice andSpeech Recognition• Free Download of software• Over 100 commands built-in• Ability to add more commands• Runs in Windows2000 andWindows XP• Utilizes latest technologies fromMicrosoft• Seamlessly integrate with Office• Voice commands of Mouse events
  25. 25. Math Talk
  26. 26. Comparison Chart• Dragon NaturallySpeaking• Speak Q• MicrosoftAccessibility• Dictate (MACProduct)
  27. 27.
  28. 28.
  29. 29. Ways to Train SpeechRecognition Programs• Reading favorite books(consider various reading levelsof students)• (clean versions)• Poetry books•
  30. 30. Easy to Read DragonScripts
  31. 31. Gregory
  32. 32. Success vs. Effort• An extremely important point whenconsidering the potential use of speechrecognition by students with learning andphysical challenges, is that speechrecognition is not a plug-and-playtechnology, but a complex technologicalsolution requiring extensive training,patience, perseverance and support.
  33. 33. Not Appropriate forEveryone• Speech recognition will not work for allstudents, and it is important to go through aninitial evaluation in order to determine if thestudent has the potential to cope.A positive note about the future of speechrecognition, is that since it is becoming moreaccurate and the technology is improving,we will find that more and more students areable to use this program in the future.
  34. 34. Excellent Resource for SpeechRecognition Programs
  35. 35. THANKYOU