Don’t forget about the activity and quiz


Your first 15-page paper on the history of computing is due Monday


Introduction to Speech

Will Styler - LIGN 6


Today’s Plan


An Apology


How does speech work?


The Speech Process


The Lungs


Flapping bits of meat (“articulation”)


Simplified a bit…


The Tongue



Let’s do an experiment


The North Wind and the Sun were disputing which was the stronger, when a traveler came along wrapped in a warm cloak.


Speech is absolutely insane


How do we wrap our heads around it?


Your writing system is a trainwreck


Your writing system is lying to you


We have a problem


Phonetic Alphabets


The International Phonetic Alphabet


The IPA allows us to ‘transcribe’ speech


There are other phonetic alphabets used for Speech Recognition


To understand transcription, you need to understand how sounds work


We break the world into two kinds of speech sounds


Describing Consonants

### Three steps to describing Consonants
* We need to know three things:
* Place: Where is the sound made?
* Manner: What are we doing there?
* Voicing: Are we making voicing?

Place


Place of Articulation

### Place

Place


Place


There are other places English doesn’t use


Reference Diagrams for Place of Articulation


Bilabial


Bilabial


Alveolar


Alveolar


Velar


Velar


Manner of Articulation


Manner

“So what are you doing with the articulators?”


Manner


Oral Stop (/t/)


Oral Stop (/t/)


Nasal Stop (/n/)


Nasal Stop (/n/)


Manner (Continued)


Voicing


Voicing


Let’s pretend we’re snakes eating bees!


Voiced vs. Voiceless


Three steps to describing Consonants


All consonants can be described this way


There are a couple of weird ones


‘Affricates’

If you combine a fricative and a stop, you get an affricate


So, that’s consonants.


Vowels!


Vowels are created by shaping your vocal tract



Vowels are different from consonants


How many vowels are present in Mainstream US English?

  1. 5

  2. 5, sometimes 6

  3. 12

  4. 17

  5. 21


How many vowels are present in Mainstream US English?

  1. 5

  2. 5, sometimes 6

  3. 12

  4. 17

  5. 21


Reminder, your writing system is as trustworthy as a politician turned used-car-salesman


/ i, ɪ, ɛ, æ, ə, əɹ, ʌ, ɑ, ɔ, ʊ, u /


/i/ - beet, see, seen, sear, seal

/ɪ/ - bit, sit, tin, sill

/ɛ/ - bet, set, sent, fair, sell

/æ/ - bat, sat, pant, pal

/ʌ/ - but, sun, pun, lull (ə in sofa, amount)

/əɹ/ - bird, purr, earl, butter, clamor (this is often broken into two vowels!)

/ɑ/ - bot, saw, star, paul, pawn, (cot*)

/ɔ/ - corn /kɔɹn/, boy /bɔj/ (caught*)

/ʊ/ - book, hood, puss

/u/ - boot, who’d, loose, lure, loon


Describing Vowels


### The IPA Vowel Chart



Diphthongs


MUSE Diphthongs

/ɔj/ - boy, soy, toy, join, oil, Roy

/aj/ - buy, right, try, sigh, die, fire

/ej/ - play, bay, may, ray, lay, trail

/ow/ - boat, oat, wrote, pope, toll

/aw/ - how, now, brown, cow, prow, louse


So, Mainstream US English has lots of vowels


So, that’s how we describe consonants and vowels


Wrapping it up


Soon…


Thank you!