Common Voice Spontaneous Speech 3.0 - Latvian

Latviešu — Latvian (lv)

This datasheet is for sps-corpus-3.0-2026-03-09 of the Mozilla Common Voice Spontaneous Speech dataset for Latvian [Latviešu - lv]. The dataset contains 56 clips representing 0.54 hours of recorded speech (0.04 hours validated) from 8 speakers.

Language

Latvian is an Baltic language belonging to the Indo-European language family. It is spoken in the Baltic region, and is the official language of Latvia as well as one of the official languages of the European Union. There are about 1.5 million native Latvian speakers in Latvia and 100,000 abroad. It uses the Latin alphabet with additional diacritical marks to represent specific sounds.

Variants

There are slight stylistic speach variations among different regions of Latvia, but they do not affect mutual intelligibility. Latgale region has more significant differences with main Latvian language. It is sometimes considered a dialect, but Latgalian (ltg) speech is collected as a separate language in Common Voice.

Data splits for modelling

The dataset clips are categorised by transcription status and training-set assignment. The following tables summarise the distribution.

Audio clips

Training splits

Training split coverage: 0 of 5 transcribed & validated clips (0.0%)

Transcriptions

Transcription status

Writing system

Latvian alphabet is based on the Latin script and consists of 33 letters, including special characters with diacritical marks such as ā, č, ē, ģ, ī, ķ, ļ, ņ, š, ū, and ž.

Historic texts also used letter /ŗ/, but use of it has been officially discontinued since 1946. This letter is equivalent to letter /r/ in modern Latvian orthography.

Letter /o/ can represent three different sounds [ua̯], [ɔ], [ɔː].

Letter /e/ can represent two different sounds [e], [æ].

Symbol table

a ā b c č d e ē f g ģ h i ī j k ķ l ļ m n ņ o p r s š t u ū v z ž

Samples

Questions

There follows a randomly selected sample of questions used in the corpus.

1. Ko cilvēki Latvijā parasti dara dzimšanas dienās?

2. Kā jūs priecājaties par savu mīļāko gadalaiku Latvijā?

3. Kādas ir jūsu domas par pilsētvides attīstību Latvijā?

4. Kura ir Latvijas labākā kaimiņvalsts?

5. Kāda ir jūsu iecienītākā vieta pilsētā un kāpēc?

Responses

There follows a randomly selected sample of transcribed responses from the corpus.

1. Katru gadu pirms Jāņiem eju noskatīties "Skroderdienas Silmačos".

2. Man patīk izbaudīt saulainas dienas, skatīties uz lapām, skatīties uz putniem, priecāties.

3. Lai arī mūsu laikā zāle bij zaļāka, man patīk jaunatne. Un viņi [disfluency] domā, viņi satiekās, tas ir ļoti svarīgi, ka viņi satiekās.

4. Ziemai pa- parasti sagatavojamies ar to, kad nodrošinam, lai mums būtu ar ko kurināt krāsni. Mēs kurinam krāsni ar granulām. Mums ir granulu katls. Un elektrībai ir jābūt. Tā kā to visu nodrošinam. [disfluency] Vēl nodrošinam apģērbu, ziemas riepas obligāti mašīnai vajadzīgas no pirmā novembra, Nodrošinam arī [disfluency] Nodrošinam daudzko, kas ir saistīts ar aukstumu. Vajadzīga ir sniega lāpsta, mašīnas [disfluency] stiklu tas kasītājs. [disfluency] Tā kā, jā, mums ir jāsagatavojas ļoti, jo nekad nevar zināt, vai būs ļoti ilga, balta ziema vai arī pēdējos gadus jau arī ziema ir palikusi tāda [disfluency] īsāka. Tas jau ir patīkamāk, jo tās ilgās, aukstās ziemas tomēr ir diezgan nogurdinoši. Ta kā, jā. Ziemas [disfluency] nav tas pozitīvākais laiks vispār, jo mums viss izskatās kā Purvīša glezna diezgan pelēks un, un nekāds. Tapēc latvieši ļoti gaida sauli, kas ir pavasarī.

5. Mana mīlākā latviešu dziesma ir Opus Pro "Rozā lietus", jo viņa ir emocionāla, viņa ir ļoti dziļa, un viņa ir pilna ar mīlestību. Šī dziesma ļoti aizkustina, tāpēc arī šī ir mana mīļākā dziesma.

Fields

Each row of a tsv file represents a single audio clip, and contains the following information:

• client_id - hashed UUID of a given user

• audio_id - numeric id for audio file

• audio_file - audio file name

• duration_ms - duration of audio in milliseconds

• prompt_id - numeric id for prompt

• prompt - question for user

• transcription - transcription of the audio response

• votes - number of people that who approved a given transcript

• age - age of the speaker1

• gender - gender of the speaker1

• language - language name

• split - for data modelling, which subset of the data does this clip pertain to

• char_per_sec - how many characters of transcription per second of audio

• quality_tags - some automated assessment of the transcription--audio pair, separated by |

  • transcription-length - character per second under 3 characters per second

  • speech-rate - characters per second over 30 characters per second

  • short-audio - audio length under 2 seconds

  • long-audio - audio length over 5 minutes

Get involved

Community links

• Balsu talka

• Common Voice translators on Pontoon

• Common Voice Communities

Discussions

• Common Voice on Matrix

• Common Voice on Discourse

• Common Voice on Discord

• Common Voice on Telegram

Contribute

• Contribute questions

• Validate questions

• Answer questions

• Transcribe recordings

• Validate transcriptions

Acknowledgements

Datasheet authors

• Raivis Dejus <orvils@gmail.com>

Licence

This dataset is released under the Creative Commons Zero (CC-0) licence. By downloading this data you agree to not determine the identity of speakers in the dataset.

Footnotes

1. For a full list of age, gender, and accent options, see the demographics spec. These will only be reported if the speaker opted in to provide that information. ↩ ↩2