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Czech MFA dictionary v2.0.0a#

  • Maintainer: Montreal Forced Aligner

  • Language: Czech

  • Dialect: N/A

  • Phone set: MFA

  • Number of words: 105,190

  • Phones: a aw aː aːɡ b c d dʒ ew f iː j k l l̩ m m̩ n n̩ o ow oː p r r̝ r̩ s t ts tʃ u uː v x z ŋ ɛ ɛː ɟ ɡ ɦ ɪ ɱ ɲ ʃ ʒ

  • License: CC BY 4.0

  • Compatible MFA version: v2.0.0

  • Citation:

@techreport{mfa_czech_mfa_dictionary_2022,
	author={McAuliffe, Michael and Sonderegger, Morgan},
	title={Czech MFA dictionary v2.0.0a},
	address={\url{https://mfa-models.readthedocs.io/pronunciation dictionary/Czech/Czech MFA dictionary v2_0_0a.html}},
	year={2022},
	month={May},
}

G2P models

Acoustic models
../../_images/full_logo_yellow.svg

Installation#

Install from the MFA command line:

mfa model download dictionary czech_mfa

Or download from the release page.

The dictionary available from the release page and command line installation has pronunciation and silence probabilities estimated as part acoustic model training (see Silence probability format and training pronunciation probabilities for more information. If you would like to use the version of this dictionary without probabilities, please see the plain dictionary.

Intended use#

This dictionary is intended for forced alignment of Czech transcripts.

This dictionary uses the MFA phone set for Czech, and was used in training the Czech MFA acoustic model. Pronunciations can be added on top of the dictionary, as long as no additional phones are introduced.

Performance Factors#

When trying to get better alignment accuracy, adding pronunciations is generally helpful, especially for different styles and dialects. The most impactful improvements will generally be seen when adding reduced variants that involve deleting segments/syllables common in spontaneous speech. Alignment must include all phones specified in the pronunciation of a word, and each phone has a minimum duration (by default 10ms). If a speaker pronounces a multisyllabic word with just a single syllable, it can be hard for MFA to fit all the segments in, so it will lead to alignment errors on adjacent words as well.

Ethical considerations#

Deploying any Speech-to-Text model into any production setting has ethical implications. You should consider these implications before use.

Demographic Bias#

You should assume every machine learning model has demographic bias unless proven otherwise. For pronunciation dictionaries, it is often the case that transcription accuracy and lexicon coverage for the prestige variety modeled in this dictionary compared to other variants. If you are using this dictionary in production, you should acknowledge this as a potential issue.

IPA Charts#

Consonants#

Obstruent symbols to the left of are unvoiced and those to the right are voiced.

Manner

Labial

Labiodental

Alveolar

Alveopalatal

Palatal

Velar

Glottal

Nasal
Occurrences:
28,229
Examples:
* mění:
[m ɲ ɛ ɲ i ː]
* rámci:
[r a ː m t s ɪ]
* mylné:
[m ɪ l n ɛ ː]
* řádem:
[r ̝ a ː d ɛ m]
Occurrences:
514
Examples:
* změn:
[z m ̩ ɲ ɛ n]
* směně:
[s m ̩ ɲ ɛ ɲ ɛ]
* smědý:
[s m ̩ ɲ ɛ d i ː]
* směju:
[s m ̩ ɲ ɛ j u]
Occurrences:
376
Examples:
* trumf:
[t r u ɱ f]
* enf:
[ɛ ɱ f]
* enver:
[ɛ ɱ v ɛ r]
* pánve:
[p a ː ɱ v ɛ]
Occurrences:
43,914
Examples:
* allen:
[a l ɛ n]
* foton:
[f o t o n]
* topná:
[t o p n a ː]
* tajný:
[t a j n i ː]
Occurrences:
28
Examples:
* srnku:
[s r n ̩ k u]
* trnka:
[t r n ̩ k a]
* hrnci:
[ɦ r n ̩ t s ɪ]
* srnka:
[s r n ̩ k a]
Occurrences:
17,203
Examples:
* stráň:
[s t r a ː ɲ]
* páně:
[p a ː ɲ ɛ]
* číně:
[t ʃ i ː ɲ ɛ]
* měním:
[m ɲ ɛ ɲ i ː m]
Occurrences:
1,684
Examples:
* hanku:
[ɦ a ŋ k u]
* wong:
[v o ŋ k]
* nkú:
[ŋ k u ː]
* wonky:
[v o ŋ k ɪ]

Stop
Occurrences:
29,124
Examples:
* hikep:
[ɦ ɪ k ɛ p]
* spisy:
[s p ɪ s ɪ]
* pluk:
[p l u k]
* pášu:
[p a ː ʃ u]
Occurrences:
11,337
Examples:
* hrobu:
[ɦ r o b u]
* vazbu:
[v a z b u]
* sbd:
[ɛ s b ɛ ː d ɛ ː]
* šibal:
[ʃ ɪ b a l]
Occurrences:
41,150
Examples:
* potká:
[p o t k a ː]
* žít:
[ʒ i ː t]
* zvíci:
[z v i ː t s ɪ]
* trupe:
[t r u p ɛ]
Occurrences:
20,430
Examples:
* vláda:
[v l a ː d a]
* dubá:
[d u b a ː]
* dipól:
[d ɪ p o ː l]
* jedva:
[j ɛ d v a]
Occurrences:
5,791
Examples:
* pěsti:
[p j ɛ s c ɪ]
* zátěž:
[z a ː c ɛ ʃ]
* sleť:
[s l ɛ c]
* loď:
[l o c]
Occurrences:
3,394
Examples:
* radíc:
[r a ɟ i ː t s]
* lodě:
[l o ɟ ɛ]
* láďa:
[l a ː ɟ a]
* řadíc:
[r ̝ a ɟ i ː t s]
Occurrences:
33,795
Examples:
* otko:
[o t k o]
* úzkým:
[u ː s k i ː m]
* kec:
[k ɛ t s]
* kolky:
[k o l k ɪ]
Occurrences:
4,303
Examples:
* gero:
[ɡ ɛ r o]
* golfu:
[ɡ o l f u]
* droga:
[d r o ɡ a]
* švagr:
[ʃ v a ɡ r ̩]

Affricate
Occurrences:
14,121
Examples:
* děcka:
[ɟ ɛ t s k a]
* čtecí:
[t ʃ t ɛ t s i ː]
* celku:
[t s ɛ l k u]
* lance:
[l a n t s ɛ]
Occurrences:
8,670
Examples:
* tlačí:
[t l a t ʃ i ː]
* mačka:
[m a t ʃ k a]
* čeští:
[t ʃ ɛ ʃ c i ː]
* čadit:
[t ʃ a ɟ ɪ t]
Occurrences:
148
Examples:
* fidži:
[f ɪ d ʒ ɪ]
* juda:
[d ʒ u d a]
* džob:
[d ʒ o p]
* padžo:
[p a d ʒ o]

Sibilant
Occurrences:
34,653
Examples:
* texas:
[t ɛ k s a s]
* servu:
[s ɛ r v u]
* ctěn:
[t s c ɛ n]
* slize:
[s l ɪ z ɛ]
Occurrences:
16,421
Examples:
* krizi:
[k r ɪ z ɪ]
* brzdí:
[b r ̩ z ɟ i ː]
* eznam:
[ɛ z n a m]
* zdrhl:
[z d r ̩ ɦ l ̩]
Occurrences:
7,467
Examples:
* šídlo:
[ʃ i ː d l o]
* lukáš:
[l u k a ː ʃ]
* čočky:
[t ʃ o t ʃ k ɪ]
* aše:
[a ʃ ɛ]
Occurrences:
4,716
Examples:
* nížit:
[ɲ i ː ʒ ɪ t]
* ržát:
[r ʒ a ː t]
* řežu:
[r ̝ ɛ ʒ u]
* žabí:
[ʒ a b i ː]

Fricative
Occurrences:
5,655
Examples:
* filc:
[f ɪ l t s]
* savče:
[s a f t ʃ ɛ]
* mafře:
[m a f r ̝ ɛ]
* bow:
[b o f]
Occurrences:
36,539
Examples:
* úvahy:
[u ː v a ɦ ɪ]
* vršek:
[v r ̩ ʃ ɛ k]
* výdaj:
[v i ː d a j]
* hovoř:
[ɦ o v o r ̝]
Occurrences:
11,488
Examples:
* hladě:
[ɦ l a ɟ ɛ]
* hrát:
[ɦ r a ː t]
* hladu:
[ɦ l a d u]
* hlíny:
[ɦ l i ː n ɪ]

Approximant
Occurrences:
16,040
Examples:
* juana:
[j u a n a]
* libyi:
[l ɪ b a j ɪ]
* youth:
[j o w t]
* vědro:
[v j ɛ d r o]

Trill
Occurrences:
33,727
Examples:
* fort:
[f o r t]
* vran:
[v r a n]
* dráze:
[d r a ː z ɛ]
* vření:
[v r ̝ ɛ ɲ i ː]
Occurrences:
2,240
Examples:
* fofr:
[f o f r ̩]
* prče:
[p r ̩ t ʃ ɛ]
* mutr:
[m u t r ̩]
* mrzly:
[m r ̩ z l ɪ]

Lateral
Occurrences:
38,616
Examples:
* lví:
[l v i ː]
* popel:
[p o p ɛ l]
* liják:
[l ɪ j a ː k]
* ujala:
[u j a l a]
Occurrences:
977
Examples:
* jedl:
[j ɛ d l ̩]
* mohl:
[m o ɦ l ̩]
* núl:
[n u ː l ̩]
* blbý:
[b l ̩ b i ː]

Vowels#

Vowel symbols to the left of are unrounded and those to the right are rounded.

Front

Near-Front

Central

Near-Back

Back

Close
Occurrences:
0
Examples:
* klíčů:
[k l i ː t ʃ u ː]
* luční:
[l u t ʃ ɲ i ː]
* bdím:
[b ɟ i ː m]
* sazím:
[s a z i ː m]
Occurrences:
35,583
Examples:
* ubozí:
[u b o z i ː]
* tkání:
[t k a ː ɲ i ː]
* nouzí:
[n o w z i ː]
* alího:
[a l i ː ɦ o]
Occurrences:
21,350
Examples:
* útlou:
[u ː t l o w]
* ujeď:
[u j ɛ c]
* pudl:
[p u d l ̩]
* lídrů:
[l i ː d r u ː]
Occurrences:
5,296
Examples:
* kosům:
[k o s u ː m]
* úvaha:
[u ː v a ɦ a]
* honů:
[ɦ o n u ː]
* rubům:
[r u b u ː m]
Occurrences:
56,634
Examples:
* taxy:
[t a k s ɪ]
* hrůzy:
[ɦ r u ː z ɪ]
* vytí:
[v ɪ c i ː]
* burzy:
[b u r z ɪ]

Close-Mid
Occurrences:
64,660
Examples:
* slow:
[s l o f]
* poldi:
[p o l ɟ ɪ]
* koťat:
[k o c a t]
* hole:
[ɦ o l ɛ]
Occurrences:
6,094
Examples:
* four:
[f o w r]
* rudou:
[r u d o w]
* pekou:
[p ɛ k o w]
* cloud:
[k l o w t]
Occurrences:
399
Examples:
* tón:
[t o ː n]
* glóbu:
[ɡ l o ː b u]
* glóbe:
[ɡ l o ː b ɛ]
* jógou:
[j o ː ɡ o w]

Open-Mid
Occurrences:
70,232
Examples:
* nebýt:
[n ɛ b i ː t]
* slepě:
[s l ɛ p j ɛ]
* nežli:
[n ɛ ʒ l ɪ]
* vázne:
[v a ː z n ɛ]
Occurrences:
9,277
Examples:
* dph:
[d ɛ ː p ɛ ː ɦ a ː]
* orné:
[o r n ɛ ː]
* renée:
[r ɛ n ɛ ː]
* bové:
[b o v ɛ ː]

Open
Occurrences:
57,350
Examples:
* diva:
[d ɪ v a]
* ďáblů:
[ɟ a ː b l u ː]
* čapím:
[t ʃ a p i ː m]
* újma:
[u ː j m a]
Occurrences:
20,945
Examples:
* skály:
[s k a ː l ɪ]
* žábry:
[ʒ a ː b r ɪ]
* nedbá:
[n ɛ d b a ː]
* urát:
[u r a ː t]

Diphthongs#

  • aw

  • ew

  • ow

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