Speech & Voice Data

Multilingual human voices for AI systems.

iVelopment sources and manages native speakers and professional voice talent for speech collection, recording, transcription, validation, and TTS and ASR-related data programs.

Discuss your voice project

What this capability includes

Speech programs can require far more than finding someone who speaks the language.

Locale, accent, recording requirements, voice profile, consistency, environment, availability, and validation can all affect whether the resulting data is useful.

iVelopment combines multilingual sourcing with experience managing professional voice talent, native-language contributors, transcription, and linguistic review.

Tasks & deliverables

Speech data collection

Recruit and manage native speakers to produce speech or audio data according to project requirements.

Scripted recording

Record supplied prompts, scripts, utterances, or other defined content using the required language and speaker profile.

Unscripted recording

Support natural or project-defined spoken-data tasks where the contributor generates speech rather than reading fixed text.

Professional voice recording

Source experienced voice talent when a program requires professional delivery or a specific commercial voice profile.

TTS-related data

Support collection and recording workflows used to create or evaluate text-to-speech datasets.

ASR-related data

Support speech collection, transcription, and validation workflows relevant to automatic speech recognition programs.

Transcription

Convert recorded speech into text using qualified language resources according to project guidelines.

Linguistic validation

Review recordings, transcripts, pronunciation, language use, or other project-defined linguistic requirements.

Use cases

  • native-speaker speech data collection
  • scripted and unscripted recording programs
  • text-to-speech (TTS) dataset creation and evaluation
  • automatic speech recognition (ASR) data programs
  • professional voice recording and commercial licensing
  • speech transcription and linguistic validation

Languages, specialists & inputs

Our professional voice roster includes resources across the Americas, Europe, and APAC.

Broader / sourced coverage
Brazilian Portuguese, Japanese, Hindi, Indian English, Saudi Arabic, Icelandic, Romanian, Russian, Welsh, Spanish, Portuguese (Portugal), Dutch, Irish English, Canadian English, British English, Australian English, and others
Sourcing model
For languages or voice profiles outside the active roster, we can source and qualify additional native speakers or professional talent.

Workflow

  1. 1

    Define the speaker profile

    Align on language, locale, accent, voice characteristics, professional versus non-professional requirements, volume, recording environment, and other selection criteria.

  2. 2

    Source & qualify

    Select from the current network or recruit additional native speakers or professional voices.

  3. 3

    Onboard

    Provide recording instructions, scripts, technical requirements, naming conventions, consent or licensing requirements supplied for the project, and delivery expectations.

  4. 4

    Record

    Contributors produce the required audio according to the agreed workflow.

  5. 5

    Validate

    Review recordings, transcription, pronunciation, technical compliance, or other defined acceptance criteria.

  6. 6

    Correct & complete

    Manage retakes, corrections, replacement resources, or additional recordings where required.

Quality

Depending on the program, controls may include:

  • native-language verification
  • talent screening
  • sample recordings
  • recording-instruction checks
  • linguistic review
  • transcript validation
  • pronunciation review
  • retakes
  • reviewer feedback
  • resource replacement

Evidence

  • Approved relationship (anonymized)

    iVelopment has supported non-exclusive commercial licensing of Chinese and Korean voices for major end-client use.

Part of

AI Data & Human Intelligence

AI systems depend on human judgment at every stage. iVelopment builds and manages multilingual teams for data collection, annotation, evaluation, speech data, linguistic review, and human feedback.

View the full solution

Related capabilities

Voice & Audio Localization

For professional voice-over, localized audio, commercial recordings, and voice licensing outside the AI-data context.

View capability

Need native speakers or professional voices for an AI data program?

Tell us the language, locale, speaker profile, recording task, volume, and validation requirements.

Discuss your voice project