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⚡ Indian and Multilingual Voice Data

Real conversational voice data for AI systems in Indian and multilingual markets

Sonexis builds structured, consented human voice datasets for AI teams training, fine-tuning, evaluating, benchmarking, and stress testing speech and conversational models.

Real users do not speak like scripts. They interrupt, self-correct, mix languages, use regional accents, give short replies, and speak in imperfect environments.

Controlled collection. Documented consent. Structured delivery.

Sample transcript
A

"Bhai, delivery kab tak aayegi? Customer wait kar raha hai."

00:02 Hinglish
B

"Panch minute mein pahunch jayega. Traffic mein thoda delay ho gaya tha."

Hindi 00:06

The Gap in Speech AI

Scraped data captures words. Sonexis captures the language.

Scraped / Synthetic

"Namaste, aapka swagat hai. Kya main aapki sahayata kar sakta hoon?"

  • → Overly formal, unnatural grammar
  • → Zero overlapping speech
  • → Studio-perfect, sterile acoustics
Sonexis Conversational

"Sun, abhi scene clear hai. Ticket book karun ya kal ke liye hold karein?"

  • ✓ Fluid code-mixing and natural language switching
  • ✓ Back-and-forth corrections, fillers, and interruptions
  • ✓ Ambient, real-world noise layers
Dataset Delivery

What buyers receive

Each delivery is scoped to your brief and can include audio files, transcript status where transcription is scoped, speaker and language metadata, scenario context, a consent reference, QA status, and a delivery manifest. Known limitations are noted where relevant.

Audio Sample

Hinglish Call Center Query

Preview availability depends on scope review

Speaker Turns

S1: Kya aap mera refund initiate kar sakte hain?

S2: Sure sir, let me check your order details.

S1: Jaldi kijiye, main hold pe hoon.

Metadata Snapshot
{
  "language": "hinglish",
  "environment": "office_noisy",
  "overlap": true,
  "speaker_id": "IN_NORTH_042"
}

Production Pipeline

From requirements sign-off to first delivery, on a timeline agreed at project kickoff. Timelines scale with language count, volume, speaker requirements, and QA depth.

01

Define Use Case

Identify your specific language, domain, and acoustic requirements (e.g., in-car Hindi ASR).

02

Scripting & Scenarios

Designing prompts that trigger natural, unscripted responses and diverse linguistic patterns.

03

Contributor Sourcing

Sourcing the right speaker profiles: native speakers across your target language, region, and demographic.

04

Managed Recording

Quality-reviewed recordings in controlled real-world settings with trained session supervision.

05

Multi-layer Annotation

Verbatim transcripts, timestamping, speaker tagging, and project-scoped annotation fields where agreed.

06

QA & Validation

Multi-step verification with human-audited QA review, scoped to the languages in your project.

07

Secure Delivery

WAV audio with JSON transcripts and CSV metadata, delivered through encrypted, access-controlled transfer.

Languages We Build In

Every dataset is built to your spec, not pulled from a shelf. Built for customer support, onboarding, sales, and everyday conversation scenarios. Tamil, Marathi, and other regional languages available on request.

Hindi Conversational

ASR TTS
हि

Transcript

spk_01: kal deployment slot free hoga kya?

Built For

ASR / TTS

Volume

Per Brief

Hinglish Code-Mixed

NLU LLM
HG

Transcript

spk_02: actually, flight cancel ho gayi.

Urban Reach

Pan-India

Mix Ratio

Set Per Brief

Punjabi Regional

Rural Noise
ਪੰ

Transcript

spk_01: ssa ji, ki haal chal hai?

Dialects

Majhi, Malwai

Environments

Outdoor

Marwadi Commerce

Commerce
मा

Transcript

spk_03: mhaare thode paise baaki hai.

Vocabulary

Domain-specific

Consent

Linked

Indian English

Accented
IE

Transcript

spk_04: Please provide the invoice now.

Region Focus

Tier 1 & 2 Cities

L1 Influence

Multi-L1

Multilingual Code-Mixed

Custom Pairs On Request
ML

Example Pairs

Hindi–English Marwadi–Hindi Haryanvi–Hindi Marwadi–English Tamil–English Marathi–Hindi + additional pairs scoped around buyer requirements

Structure

Same Schema

Delivery

Per Brief

Discuss Your Requirements →

Start Building

Get structured conversational voice data delivered in standard ML-ready formats.

1

Review Dataset Specs

Browse our schema structure, annotation layers, and coverage specs for your target language and domain.

2

Define Requirements

Tell us your language, domain, speaker profiles, edge cases, and volume requirements.

3

Receive Structured Data

Get structured, delivery-ready data with timelines agreed at project kickoff. We support both one-time dataset creation and ongoing collection pipelines.

Language Coverage Matrix

Language Scenario examples Code Mixing Annotation Status
Hindi Customer support, onboarding, product discovery, general conversation ✓ Full Verbatim, POS, scoped tags BUILT TO ORDER
Hinglish E-commerce, support, product discovery, voice agent testing ✓ Native Language ID, scoped tags BUILT TO ORDER
Punjabi Family, rural services, local support, advisory conversations ~ Partial Verbatim, Timestamped BUILT TO ORDER
Marwadi Commerce, local trade, rural conversation, support flows – None Verbatim Only BUILT TO ORDER
Indian English BPO, support, enterprise workflows, meeting-style conversation – None Verbatim, scoped tags BUILT TO ORDER
Tamil Support, Daily Life ~ Partial Verbatim, Timestamped ON REQUEST
Marathi Commerce, General ~ Partial Verbatim, Timestamped ON REQUEST
Multilingual / Code-Mixed Buyer-defined scenarios after scope review ✓ Native Per-token Lang ID, Full ON REQUEST

Domains are scoped per buyer brief. Regulated or sensitive domains require separate consent, QA, legal, and delivery review.

The Methodology Behind the Data

We don't just record audio. We design linguistic interactions. Our managed collection process is built to improve the signal value of every approved recording for your training, fine-tuning, or evaluation workflow.

Explore Our Methodology →
🎙

Controllable Noise

Recorded across a range of real-world acoustic environments.

👥

Demographic Depth

Speaker profile coverage based on consented, project-relevant requirements.

📄

Rich Annotation

Project-scoped tagging layers such as speaker labels, intent tags, QA notes, or other agreed annotations.

🛡

Privacy Review

Privacy review available based on project scope.

Ethical AI, by Design

Transparency is our default. Every contributor is a partner.

Consent Architecture
{
  "contributor_id": "SNX_9921",
  "explicit_consent": true,
  "usage_scope": [
    "ASR_TRAINING",
    "SENTIMENT_ANALYSIS"
  ],
  "fair_compensation": true
}

Explicit Consent

Contributors agree to task-specific data use terms before collection. Consent scope is defined around the approved project use.

Fair Compensation

Contributors are paid directly for approved recordings.

Privacy First

We work to remove personal identifiers from transcript and metadata layers, with human review to reduce PII exposure.

Data Rights

Contributor withdrawal and removal requests are handled according to the agreed consent and data management process.

Request a Scope Review

Describe your project and we'll send a curated dataset snippet. We review every request and respond with the next step.

We review all relevant enquiries and reply with the next step.