Audio data collection for speech AI and voice technology

Audio data collection for speech AI and voice technology

Get production-ready audio datasets to power your speech models. LXT delivers global, high-quality audio data collection services across languages, speaker profiles, and environments. Whether you need scripted prompts or spontaneous conversations, we create or capture speech data tailored to your acoustic and linguistic needs.

Connect with our audio data experts

Why AI innovators rely on LXT for global audio data collection & voice recordings

Global Reach for Audio AI

Speech data recorded across 150+ countries and 1,000+ linguistic and cultural locales – capturing real-world diversity for robust model training.

Expert Network of Native Speakers

Over 8 million contributors including accent-diverse speakers, linguists, and QA-trained reviewers – matched by language, age, and demographic profile.

Real-World Audio Variety

Capture in varied environments (quiet rooms, public spaces, vehicles), device types (smartphones, headsets), and speech types (read, conversational, emotional).

Speed at Scale

Streamlined workflows and mobile/web app collection deliver fast, consistent data across geographies – even under tight launch timelines.

Enterprise-Grade Quality & Compliance

ISO 27001-certified infrastructure, GDPR, HIPAA readiness, and multi-stage QA to meet the strictest industry standards.

Built for Your Use Case

Data collection customized to your prompts, recording specs, file formats, speaker mix, and acoustic requirements – ready to fine-tune any speech model.

Our audio data collection services at a glance

LXT provides managed, on-demand audio data collection services designed for training automatic speech recognition (ASR), voice-enabled AI, speaker identification, and acoustic models. Contributors record speech following your scenarios and specs – with metadata captured for full context.

Scripted prompts

Participants read predetermined text lines, keywords, or command sets in multiple styles, accents, or emotional tones.

Use Cases:

• Wake word training

• Command recognition

• Pronunciation modeling

Conversational speech

Two or more speakers engage in spontaneous or guided dialogues on defined topics or tasks.

Use Cases:

• Conversational AI and chatbot training

• Dialogue intent recognition

• Contextual ASR tuning

Emotional & expressive speech

Participants record phrases with varying emotions (e.g., happy, frustrated, urgent) or vocal intensity.

Use Cases:

• Emotion detection

• Call center simulation

• Affective computing models

Environmental audio

Speech captured in real-world settings such as cars, offices, streets, and homes with varying background noise.

Use Cases:

• In-car command systems

• Noise-robust ASR

• Multichannel and device variation tuning

Multilingual recordings

Speech recorded in a wide range of languages, dialects, and local variants – with demographic targeting.

Use Cases:

• Multilingual virtual assistants

• Speech translation

• Accent adaptation

How our audio data collection
process works

Our audio data collection services follow a proven, end-to-end process designed for speed, scalability, and accuracy. We work closely with you from scoping to final delivery to ensure the dataset fits your model goals.

• 1.Contact & project briefing

• 2.Project setup

• 3.Pilot collection & optimization

• 4.Full-scale capture

• 5.Quality assurance

• 6.Delivery

• 7.Scale & refresh

Contact us to discuss your audio data needs – including languages, speaker demographics, environments, prompts, and formats. Based on this, we create a detailed proposal and a custom quote.

Quality & security

LXT applies rigorous quality control and enterprise-grade data protection throughout every stage of your audio data project.

Curated contributor selection

Contributors are filtered by language fluency, demographic profile, recording environment, and device compatibility – based on your requirements.

Enterprise compliance

LXT operates under ISO 27001-certified infrastructure and is GDPR, and HIPAA compliant – giving you peace of mind in regulated environments.

Pre-Task training (optional)

Contributors can complete onboarding tasks to align on pronunciation, emotion delivery, or prompt formats before full-scale collection.

Data privacy & confidentiality

We offer mutual NDAs and follow strict access protocols. Sensitive data can be handled via VPN, VPC, or other secure setups as needed.

Layered quality assurance

Gold tasks, peer review, automated validations, and expert audits ensure speech clarity, accuracy, and adherence to your requirements.

Secure infrastructure

All audio files are encrypted during transfer and storage, with strict access controls to protect sensitive datasets end-to-end.