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Czech MFA dictionary v2.0.0#

  • Maintainer: Montreal Forced Aligner

  • Language: Czech

  • Dialect: N/A

  • Phone set: MFA

  • Number of words: 94,012

  • Phones: a aw aː 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 v2.0.0},
	address={\url{https://mfa-models.readthedocs.io/pronunciation dictionary/Czech/Czech MFA dictionary v2_0_0.html}},
	year={2022},
	month={Mar},
}

G2P models
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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:
24,192
Examples:
* čem:
[tʃ ɛ m]
* morf:
[m o r f]
* mind:
[m iː n t]
* mletí:
[m l ɛ c iː]
Occurrences:
459
Examples:
* normě:
[n o r m̩ ɲ ɛ]
* směně:
[s m̩ ɲ ɛ ɲ ɛ]
* barmě:
[b a r m̩ ɲ ɛ]
* smrad:
[s m̩ r a t]
Occurrences:
317
Examples:
* nymfa:
[n ɪ ɱ f a]
* nymfy:
[n ɪ ɱ f ɪ]
* lymfa:
[l ɪ ɱ f a]
* pánví:
[p aː ɱ v iː]
Occurrences:
37,543
Examples:
* mind:
[m iː n t]
* dušan:
[d u ʃ a n]
* rodin:
[r o ɟ ɪ n]
* mýtný:
[m iː t n iː]
Occurrences:
23
Examples:
* srnku:
[s r n̩ k u]
* srnka:
[s r n̩ k a]
* zrnko:
[z r n̩ k o]
* srnčí:
[s r n̩ tʃ iː]
Occurrences:
15,021
Examples:
* učiní:
[u tʃ ɪ ɲ iː]
* síně:
[s iː ɲ ɛ]
* usní:
[u s ɲ iː]
* vnímá:
[v ɲ iː m aː]
Occurrences:
1,480
Examples:
* angel:
[a ŋ ɡ ɛ l]
* singl:
[s ɪ ŋ ɡ l̩]
* lang:
[l a ŋ k]
* tenká:
[t ɛ ŋ k aː]

Stop
Occurrences:
25,734
Examples:
* trpět:
[t r̩ p j ɛ t]
* opéct:
[o p ɛː ts t]
* pouze:
[p ow z ɛ]
* spis:
[s p ɪ s]
Occurrences:
10,057
Examples:
* rublu:
[r u b l u]
* těžby:
[c ɛ ʒ b ɪ]
* rybíz:
[r ɪ b iː s]
* bojko:
[b o j k o]
Occurrences:
36,514
Examples:
* mind:
[m iː n t]
* trpět:
[t r̩ p j ɛ t]
* opéct:
[o p ɛː ts t]
* leto:
[l ɛ t o]
Occurrences:
17,967
Examples:
* sady:
[s a d ɪ]
* jedlé:
[j ɛ d l ɛː]
* dušan:
[d u ʃ a n]
* vsedl:
[f s ɛ d l̩]
Occurrences:
5,161
Examples:
* mletí:
[m l ɛ c iː]
* těžby:
[c ɛ ʒ b ɪ]
* pouť:
[p ow c]
* cti:
[ts c ɪ]
Occurrences:
3,043
Examples:
* rodin:
[r o ɟ ɪ n]
* děsíc:
[ɟ ɛ s iː ts]
* sadě:
[s a ɟ ɛ]
* řádím:
[r̝ aː ɟ iː m]
Occurrences:
30,328
Examples:
* zkusí:
[s k u s iː]
* kurri:
[k u r ɪ]
* úprku:
[uː p r k u]
* akcí:
[a k ts iː]
Occurrences:
3,643
Examples:
* ehs:
[ɛ ɡ ɦ]
* gesto:
[ɡ ɛ s t o]
* glóby:
[ɡ l oː b ɪ]
* gajdy:
[ɡ a j d ɪ]

Affricate
Occurrences:
12,302
Examples:
* výšce:
[v iː ʃ ts ɛ]
* opéct:
[o p ɛː ts t]
* ocelí:
[o ts ɛ l iː]
* válci:
[v aː l ts ɪ]
Occurrences:
7,864
Examples:
* čem:
[tʃ ɛ m]
* čsú:
[tʃ s uː]
* učiní:
[u tʃ ɪ ɲ iː]
* loučí:
[l ow tʃ iː]
Occurrences:
122
Examples:
* cage:
[k ɛː dʒ]
* fidži:
[f ɪ dʒ ɪ]
* gadžo:
[ɡ a dʒ o]
* džíp:
[dʒ iː p]

Sibilant
Occurrences:
30,661
Examples:
* sea:
[s ɛ a]
* sady:
[s a d ɪ]
* čsú:
[tʃ s uː]
* vous:
[v ow s]
Occurrences:
14,191
Examples:
* pouze:
[p ow z ɛ]
* zdali:
[z d a l ɪ]
* czech:
[ts z ɛ x]
* zalít:
[z a l iː t]
Occurrences:
6,710
Examples:
* výšce:
[v iː ʃ ts ɛ]
* dušan:
[d u ʃ a n]
* ušli:
[u ʃ l ɪ]
* rašín:
[r a ʃ iː n]
Occurrences:
4,221
Examples:
* těžby:
[c ɛ ʒ b ɪ]
* žádný:
[ʒ aː d n iː]
* vyžít:
[v ɪ ʒ iː t]
* žalob:
[ʒ a l o p]

Fricative
Occurrences:
4,998
Examples:
* morf:
[m o r f]
* vsedl:
[f s ɛ d l̩]
* kavce:
[k a f ts ɛ]
* kufr:
[k u f r̩]
Occurrences:
31,756
Examples:
* výšce:
[v iː ʃ ts ɛ]
* vous:
[v ow s]
* válci:
[v aː l ts ɪ]
* vědom:
[v j ɛ d o m]
Occurrences:
10,053
Examples:
* hůl:
[ɦ uː l]
* háji:
[ɦ aː j ɪ]
* ehs:
[ɛ ɡ ɦ]
* prhu:
[p r̩ ɦ u]

Approximant
Occurrences:
14,027
Examples:
* jedlé:
[j ɛ d l ɛː]
* trpět:
[t r̩ p j ɛ t]
* jílů:
[j iː l uː]
* háji:
[ɦ aː j ɪ]

Trill
Occurrences:
29,488
Examples:
* morf:
[m o r f]
* rodin:
[r o ɟ ɪ n]
* rublu:
[r u b l u]
* rybíz:
[r ɪ b iː s]
Occurrences:
2,035
Examples:
* trpět:
[t r̩ p j ɛ t]
* prhu:
[p r̩ ɦ u]
* krky:
[k r̩ k ɪ]
* krmí:
[k r̩ m iː]

Lateral
Occurrences:
34,153
Examples:
* jedlé:
[j ɛ d l ɛː]
* mletí:
[m l ɛ c iː]
* hůl:
[ɦ uː l]
* jílů:
[j iː l uː]
Occurrences:
891
Examples:
* vsedl:
[f s ɛ d l̩]
* seidl:
[s a j d l̩]
* zvedl:
[z v ɛ d l̩]
* slza:
[s l̩ z a]

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:
31,065
Examples:
* výšce:
[v iː ʃ ts ɛ]
* mind:
[m iː n t]
* mletí:
[m l ɛ c iː]
* jílů:
[j iː l uː]
Occurrences:
18,661
Examples:
* dušan:
[d u ʃ a n]
* rublu:
[r u b l u]
* ušli:
[u ʃ l ɪ]
* zkusí:
[s k u s iː]
Occurrences:
4,729
Examples:
* hůl:
[ɦ uː l]
* jílů:
[j iː l uː]
* čsú:
[tʃ s uː]
* úprku:
[uː p r k u]
Occurrences:
49,143
Examples:
* sady:
[s a d ɪ]
* háji:
[ɦ aː j ɪ]
* rodin:
[r o ɟ ɪ n]
* těžby:
[c ɛ ʒ b ɪ]

Close-Mid
Occurrences:
56,336
Examples:
* morf:
[m o r f]
* rodin:
[r o ɟ ɪ n]
* opéct:
[o p ɛː ts t]
* ocelí:
[o ts ɛ l iː]
Occurrences:
5,377
Examples:
* vous:
[v ow s]
* pouze:
[p ow z ɛ]
* pouť:
[p ow c]
* louka:
[l ow k a]
Occurrences:
360
Examples:
* fóre:
[f oː r ɛ]
* glóby:
[ɡ l oː b ɪ]
* chróm:
[x r oː m]
* fór:
[f oː r]

Open-Mid
Occurrences:
61,324
Examples:
* čem:
[tʃ ɛ m]
* sea:
[s ɛ a]
* jedlé:
[j ɛ d l ɛː]
* výšce:
[v iː ʃ ts ɛ]
Occurrences:
7,796
Examples:
* jedlé:
[j ɛ d l ɛː]
* opéct:
[o p ɛː ts t]
* slepé:
[s l ɛ p ɛː]
* bídné:
[b iː d n ɛː]

Open
Occurrences:
50,509
Examples:
* sea:
[s ɛ a]
* sady:
[s a d ɪ]
* dušan:
[d u ʃ a n]
* seidl:
[s a j d l̩]
Occurrences:
18,259
Examples:
* háji:
[ɦ aː j ɪ]
* válci:
[v aː l ts ɪ]
* žádný:
[ʒ aː d n iː]
* rámce:
[r aː m ts ɛ]

Diphthongs#

  • aw

  • ew

  • ow

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