Audio Annotation Tool
TRUST THROUGH HUMAN REVIEW
Build better Voice AI with expert-led audio annotation in Ango Hub. From multilingual ASR gold data to conversational intelligence and evaluation, we help teams turn audio into dependable training signals.
WHAT ANGO HUB OFFERS
WORKFLOW MANAGEMENT
BUILT-IN QUALITY CHECKS
AUTOMATION
INTEGRATIONS
ANALYTICS
SECURITY AND GOVERNANCE
USE CASES
- BESPOKE AUDIO AND SPEECH DATA COLLECTION
Design and execute custom labeling programs on your audio across languages, accents, and environments, tailored to your model goals and edge cases. - GOLD DATA FOR MULTILINGUAL ASR
Create high-accuracy transcripts on your data with segmentation, timestamps, and speaker diarization to train and validate ASR in real-world conditions. - CONVERSATIONAL INTELLIGENCE AND GOVERNANCE
Label intents, entities, outcomes, and behaviors from your customer or agent conversations, including PII redaction and compliance tagging where required. - PRECISION EVALUATION FOR VOICE AI
Benchmark Voice AI performance on your recordings across accuracy, robustness, and safety, including TTS attributes like naturalness, style, and persona consistency. - AMBIENT SCRIBE
Annotate and evaluate clinician patient audio from your workflows to support ambient documentation accuracy and reliability, with quality-first review processes.
SCALING
HUMAN IN THE LOOP
WHY CHOOSE iMERIT
EXPERT-IN-THE-LOOP EVALUATION
TECHNOLOGY & SCALE
SECURITY
Featured
Content
Frequently Asked Questions
What types of audio annotation tasks does Ango Hub support?
How does iMerit handle multilingual audio annotation and diverse accents?
iMerit's expert-in-the-loop model puts trained human reviewers on tasks that require nuanced judgment — accents, overlapping speech, domain jargon, and ambiguous phrasing. Rather than relying on automation to resolve what automation can't handle, iMerit combines model-assisted workflows with specialist human review to produce dependable, multilingual ground truth that holds up in real-world conditions.
Can the audio annotation tool support ASR training data at scale?
Absolutely. Ango Hub is built for production-scale speech programs. Workflow automation handles task routing, handoffs, and structured review across large labeling teams. Analytics track throughput and quality in real time so you can identify bottlenecks, optimize output, and deliver consistent transcription and diarization datasets — even across high-volume multilingual programs.
Is the audio annotation platform suitable for regulated or sensitive voice data?
Yes. Ango Hub supports sensitive voice programs with enterprise-grade access controls, role-based permissions, and compliance-ready handling for regulated workflows — including PII redaction requirements and policy-specific tagging. Whether you're working on clinical ambient documentation or financial call center data, the platform is designed for governance-first operations.
What makes iMerit's audio annotation different from generic transcription services?
Generic transcription gives you text. iMerit gives you structured, model-ready ground truth. The difference is purpose-built workflows with built-in QA, expert reviewers who understand domain context, and delivery visibility from task assignment through final output. iMerit doesn't just transcribe — it builds the labeled datasets that make Voice AI reliable, from ASR training to TTS evaluation to conversational intelligence.
GETTING
STARTED!
Scale speech and sound datasets fast. Ango Hub supports transcription, diarization, and sound event labeling, with iMerit delivering consistent audio annotation end to end.
