Audio AI

Audio & Speech Data for AI

Voice recordings in 100+ languages. Environmental sounds and real-world noise.
Collection, transcription, and annotation — end-to-end audio data services.

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Speech & Voice Data

Human voice collection, transcription, and annotation for speech AI models.

What We Deliver

Voice Collection

Scripted prompts, spontaneous conversation, specific scenarios.

Speaker Variety

Professional voice talent or everyday speakers, any accent.

Transcription

Verbatim with timestamps, speaker diarization.

Phonetic Annotation

IPA transcription, pronunciation variants.

Emotion & Sentiment

Tone classification, emotional state labeling.

Built For

ASR/STT model training.
Text-to-speech development.
Voice assistant fine-tuning.
Call center AI training.
Conversational AI development.

Sound & Environment Audio

Real-world audio collection beyond human speech — for audio classification, sound detection, and acoustic AI.

What We Deliver

Environmental Sounds

Street noise, office ambiance, nature, public spaces.

Machine & Industrial

Engine sounds, equipment noise, mechanical audio.

Household Audio

Appliances, doors, alarms, everyday sounds.

Acoustic Scenes

Full environment recordings with labeled sound events.

Sound Effects

Specific audio events for detection model training.

Human Noises

Baby crying audios, human snoring audios, etc.

Built For

Audio classification models.
Sound event detection.
Noise filtering and cancellation.
Acoustic scene recognition.
Anomaly detection (industrial, security).

Languages

Native speakers across all major languages. Regional accents, dialects, and code-switching supported. Contact us for specific language availability.

Enterprise-Grade Quality

Multi-tier QA process

Multi-tier QA process

Inter-annotator agreement metrics

Inter-annotator agreement metrics

Custom AI agents for real-time quality monitoring

Custom AI agents for real-time quality monitoring

Dedicated project managers

Dedicated project managers

Need custom audio data?

Tell us about your project — speech, sound, or both.

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Custom Audio

FAQs

1. What kind of speech training data does AIxBlock provide for ASR models?

AIxBlock provides end-to-end speech data services designed specifically for training and benchmarking ASR models. This includes collecting fresh voice recordings across various languages, accents, and demographics, as well as providing our OTS (Off-The-Shelf) Call Center Audio library. We handle the full pipeline: collection, accurate transcription, and detailed annotation (such as speaker labels, timestamps, and intent).

2. Can AIxBlock support multilingual ASR training at scale?

Yes. AIxBlock supports multilingual speech data collection and annotation across more than 100 languages and accents. Our Multilingual at Scale capability is powered by a global crowd, allowing us to deliver massive collection projects fast for teams looking to expand their voice agents or ASR models into new global markets.

3. Does AIxBlock provide transcription and labeling for ASR training data?

Yes. AIxBlock delivers end-to-end ASR training data services, including transcription, timestamps, speaker labels, and domain-specific tags. We handle complex annotation schemas that are non-trivial for generic vendors, including precise timestamps, diarization (identifying who spoke when), sentiment analysis, and intent labeling.

4. Is AIxBlock speech data suitable for regulated or sensitive use cases?

AIxBlock supports regulated ASR use cases through a Self-Hosted Platform where your storage is connected from day one. Speech data flows directly into the client’s infrastructure, supporting data sovereignty, auditability, and compliance requirements common in banking, healthcare, and enterprise contact centers.

5. When should an ASR team choose AIxBlock instead of collecting speech data in-house?

A team should choose AIxBlock when internal efforts fail to meet the scale and diversity required for production-ready models. Specifically:

  1. To Avoid Management Overhead: When managing distinct vendors or crowds for 100+ languages becomes a "fire drill" or results in slow turnaround times.
  2. For Niche Domains: When generic web data isn't enough and the team struggles to find high-quality speech in niche domains that your in-house team doesn't have skillset in.
  3. When you need to engage a large number of contributors across diverse demographics to ensure data diversity at scale.
6. How do you handle "crosstalk" and speaker separation (Diarization) in noisy environments?

We specialize in complex annotation schemas that generic vendors often fail to deliver. This includes precise speaker diarization even in overlapping conversation scenarios. We also label background vs. foreground noise, essential for training models to focus on the active speaker in real-world conditions.

7. Can you simulate specific acoustic environments (e.g., in-car, far-field, street noise)?

Yes. We can collect or curate audio specific to messy real-life scenarios, such as commands spoken inside a moving vehicle, far-field commands for smart home devices, or dialogue in crowded public spaces. This ensures your model is robust against the actual acoustic conditions it will face in the wild.