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Ling Midterm 2
| Term | Definition |
|---|---|
| Rule-Based Synthesis/Recognition Function | Rules for Phonemes + Rules for Variation |
| Machine Learning: Generative AI Synthesis Function | Finds patterns in the data to learn millions of rules |
| Rule-Based Synthesis/Recognition Pros & Cons | Small and Flexible, Science doesn’t know all of the rules, Synthesis sounds just okay, Recognition doesn’t work... |
| Machine Learning: Generative AI Synthesis Pros & Cons | Finds patterns in the data to learn millions of rules, Needs HUGE amounts of data, Sounds great |
| Complete Data for Generative Synthesis | Every phonemic environment, every suprasegmental environment, every dialect |
| Barriers to Generative Synthesis | Money, environmental resources, inflexible, majority favoritism, access to data collection, breadth of data, uneven data, profitable market |
| The Problem of Invariance | Speech tech can’t use the same acoustics for every phoneme/word but must take into account interspeaker and intraspeaker variation. |
| Intraspeaker Variation | the inability of a single speaker to produce a phoneme with the same acoustics twice |
| Suprasegmental Features | Answer Focus, Question vs. Declarative Intonation, Topic Marking, Emotions |
| Allophones | a noncontrastive variant that only appears in certain environments |
| Pure Tones Function | formants, harmonics, voiceless turbulent air |
| Rules For Formant Based Synthesis | individual phoneme goals, transitions between phonemes |
| Dynamical Systems Equation | Δx/Δt = kx + c |
| basic for loop | m = [1] for p in [1, 2, 3]: m.append(p + m[p-1] + 2) print (m) |
| Synthesis For Loop | x = [400] for n in range(1,11): x.append(x[n-1] + (-.25*x[n-1] + 175)) for n in range(11,21): x.append(x[n-1] + (-.25*x[n-1] + 125)) print(x) |
| Coarticulation | Phonemic variation in different environments |
| Formant Transitions | Vocal tract has intermediate shapes when moving between phonemes |
| Characteristics of Coarticulation | Formant transitions, the gestures of one phoneme overlapping with its neighbor, shape of phoneme adjusting for neighbors |
| Articulator | Anything that moves during speech |
| Movement Change Approaching Goal | Movement slows approaching goal |
| Syllable length variation | All syllables are the same length |
| Articulation System Type | Spring System |
| k in Dynamic Systems Equation | stiffness, acceleration of system |
| c in Dynamic Systems Equation | helps determine goal |
| x in Dynamic Systems Equation | given position of system |
| Current position equation | current position = previous position + (k*previous position + c) |
| Minimal Pairs | Words that differ by only one phoneme, determine phonemic inventories |
| Dialect | different phonemic inventories |
| Phonology | The study of which allophone a phoneme manifests as |
| Assimilation Rule | A phoneme takes on the feature of a neighboring phoneme |