Natural Language Processing: Crash Course Computer Science #36

Natural Language Processing: Crash Course Computer Science #36

Today we’re going to talk about how computers understand speech and speak themselves. As computers play an increasing role in our daily lives there has been an growing demand for voice user interfaces, but speech is also terribly complicated. Vocabularies are diverse, sentence structures can often dictate the meaning of certain words, and computers also have to deal with accents, mispronunciations, and many common linguistic faux pas. The field of Natural Language Processing, or NLP, attempts to solve these problems, with a number of techniques we’ll discuss today. And even though our virtual assistants like Siri, Alexa, Google Home, Bixby, and Cortana have come a long way from the first speech processing and synthesis models, there is still much room for improvement.

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49 Comments

  1. onee on March 19, 2020 at 1:58 pm

    What bothers me about those "speech recognizers" is. Most of the time we humans don’t say things like "I <pause> am <pause> going <pause> to <pause> …". But talk more like this "Am goingto" (yes, I exaggerated a bit). So, we combine two words, because you talk faster. Or we even skip words. But the computer is programmed to recognize each word individually. Which isn’t the way humans naturally speak.



  2. Ntaoleng Mokotini on March 19, 2020 at 1:59 pm

    what software do you use for editing?



  3. Navar Medeiros Mendonça e Nascimento on March 19, 2020 at 2:02 pm

    Omg, your videos are good, but you speak really fast. Could you improve that?



  4. Samuel Rodríguez on March 19, 2020 at 2:02 pm

    Who did she see?

    She saw me…

    Who saw you?

    She saw me…

    Did she see you or hear you?

    She saw me!



  5. Eve Kohley on March 19, 2020 at 2:03 pm

    I mean all I got was the surveillance. Then again, as a tool this is so cool.



  6. Cocoa Chanie on March 19, 2020 at 2:04 pm

    Excellent video!



  7. Đạt Phạm on March 19, 2020 at 2:04 pm

    Hm hm , great but a bit sleepy for a weak body of me



  8. Simon G on March 19, 2020 at 2:05 pm

    Great introduction to a very complex area!



  9. Nath G. on March 19, 2020 at 2:05 pm

    I like the robotic voices though ;/



  10. Yousif Tareq on March 19, 2020 at 2:05 pm

    New we have bot spams…



  11. Vishal Mistry on March 19, 2020 at 2:06 pm

    Ahhh there’s the problem, she used Siri…



  12. prajjwal gupta on March 19, 2020 at 2:06 pm

    Your voice is so sweet… I can recognize the sweetness of your voice… ❤️❤️💋💋



  13. Alexandre Valente on March 19, 2020 at 2:06 pm

    Do you breath sometimes ?
    Even Siri can’t follow you 😉



  14. scfoxcode on March 19, 2020 at 2:14 pm

    Absolutely fantastic video. A great overview of the topic making it easy for me to learn more about the parts that interest me. I will be watching more of these this weekend



  15. chethan pai on March 19, 2020 at 2:15 pm

    A video on
    1) firmware, drivers, microcontroller, daq and PLD
    2) database
    Would be very useful and complete…



  16. Dominik Kolesár on March 19, 2020 at 2:16 pm

    Your enthusiasm is awesome.



  17. Agent ANAKIN on March 19, 2020 at 2:17 pm

    I’m amazed by the Mac in the background.



  18. Andrew Jones on March 19, 2020 at 2:18 pm

    This is awesome you rock comp sci goddess.



  19. Tom B on March 19, 2020 at 2:18 pm

    Very impressive young lady, Thks



  20. Star Mole on March 19, 2020 at 2:20 pm

    Great vid, slow down a tiny bit tho 🙂



  21. David Chidester on March 19, 2020 at 2:21 pm

    This makes me want a crash course linguistics so bad.



  22. T.R. McCoy on March 19, 2020 at 2:23 pm

    Fascinating, thank you.



  23. YUSHAN ZOU on March 19, 2020 at 2:24 pm

    I wonder if there are some academic papers that introducing these concepts? I hope wish I can find good citation for my dissertation, thank you!



  24. Chinmay Jain on March 19, 2020 at 2:25 pm

    She saw me



  25. Lloyd Dominic Refuerzo on March 19, 2020 at 2:26 pm

    If you still have a Windows XP computer, or if you have access to Microsoft Sam (the voice of Narrator in Windows XP), replace the sample text with "soy" or "soi", and you’ll hear a strange sound.



  26. Kyle Noe on March 19, 2020 at 2:26 pm

    Omg like x1000. Great coverage girl…



  27. KEBI Photography on March 19, 2020 at 2:27 pm

    The best part of this video is when she spoke in Shakespearean to Siri. Who here can also fluently speak this language? I know I can.



  28. Batsukh Shadav on March 19, 2020 at 2:33 pm

    Plz speak slowly all crash course watchers are non native speakers.



  29. Mauricio Aldana on March 19, 2020 at 2:38 pm

    Thank you, Carrie. Great explanation!



  30. Jarvis Nederlof on March 19, 2020 at 2:38 pm

    pro tip, turn the 12 minute video into 15. Give the viewer consistent and natural pauses between sentences and concepts, and let them absorb the information. If people want to speed it up they can, but at least the pauses are natural.



  31. Ivanna Ivanova on March 19, 2020 at 2:40 pm

    I love how you gave an example with Siri! Thank you for all your work! You are amazing.



  32. ram krishna verma on March 19, 2020 at 2:40 pm

    apart from the vocabularies concept can you give short description on Entity extraction, aspect of entity extraction , like how can these interrelate to Natural language processing.



  33. Tueem Syhu on March 19, 2020 at 2:41 pm

    Good and Interesting!😀😁



  34. Richard S. on March 19, 2020 at 2:41 pm

    It’s just crazy how much of the development of computers was helped by government. Kinda destroys the whole right wing argument about how it’s only capitalism that makes a change in technology. And also, these videos are co-produced PBS, funded by the American government. If you learnt something, thank the US, I guess.



  35. Patrik Karlsson on March 19, 2020 at 2:41 pm

    great stuff!!



  36. appletree on March 19, 2020 at 2:42 pm

    Brilliant



  37. avagoyamug on March 19, 2020 at 2:42 pm

    Hey, that’s a copy of Mitnick’s "Ghost in the Wires" in the background!



  38. Salmaan Noorgat on March 19, 2020 at 2:44 pm

    LMAOOOOO I had my phone with me and siri was activated on my phone while this video was playing hahahaha I was like WTF hahaha



  39. Jawad Tahmeed on March 19, 2020 at 2:44 pm

    Damn, she speaks faaaaaast !!



  40. hari chand on March 19, 2020 at 2:44 pm

    Too fast rate of speech makes the information lost.



  41. mrlildylchillin on March 19, 2020 at 2:45 pm

    carrie anne looks like fish



  42. Alejandro Mendoza on March 19, 2020 at 2:46 pm

    thanks for this information I will take a 10 in my class of english



  43. Mayank Upadhyay on March 19, 2020 at 2:48 pm

    9:49 my brain cells are dead now.



  44. Philip Greener on March 19, 2020 at 2:48 pm

    Do you, as AI makers, identify as humans because I can see it benefiting humanity trickling down from the AI-creator elites getting max power but once you’ve fully quantized a human, reproduced one, and surpassed one.. why would you care about a biological one, or is ‘human’ obsolete and to survive we MUST augment to AI then full upload to the AI-net?



  45. Anthony Morford on March 19, 2020 at 2:53 pm

    Is a chatbot considered A.I.? I always thought it was.



  46. kaja kaja on March 19, 2020 at 2:53 pm

    even she is like a bot…. 200 + words per minute ….. better she can start rapping…



  47. Gautama Siddhartha on March 19, 2020 at 2:55 pm

    I am PG Students from India Linguistics ,but I studied General Linguistics in master degree, can anybody guide me self learning Computational Linguistics course available???? Pls.



  48. Global Digital Direct Subsidiarity Democracy on March 19, 2020 at 2:56 pm

    3:33



  49. Rubén Alejandro on March 19, 2020 at 2:56 pm

    Damn, Computer Science is so exciting.