Compliance
Audio data QA and acceptance criteria
Last updated: July 2026
Auditable audio data for regulated AI. Define measurable acceptance criteria, review coverage, exception handling, and evidence for your audio data programme.
Summary
- Formats
- WAV, FLAC, MP3, and most common codecs accepted
- Standard delivery
- Uncompressed 16 kHz / 16-bit WAV, or your specified format
- Protocol
- Five-stage auditable QA from ingestion to delivery
- Coverage
- Project-defined evidence coverage; sampling or full review
- Criteria
- Version-controlled, co-designed with your team before kickoff
- Workflows
- GDPR-aligned; EU AI Act obligation mapping available
Where audio data problems surface late
Poor audio data quality can surface late in model evaluation, procurement review, or production monitoring.
For ML engineers: Data that has not been checked against agreed criteria shows up as drift, retraining cycles and delayed milestones.
For procurement: Unclear acceptance gates lead to rework, disputes and schedule risk.
For compliance officers: PII in training data creates audit liability. Governance evidence must match the system, data role, and applicable obligations.
Five QA stages from ingestion to delivery
Documentation depth and traceability are fixed in the project protocol.
| Stage | What happens |
|---|---|
| Ingestion | Automated format validation, sample rate checks, clipping detection |
| Automated QA | SNR analysis, silence detection, PII scan, metadata validation |
| Human review | Transcription review, inter-annotator agreement measurement |
| Expert adjudication | Edge case resolution, domain terminology validation |
| Delivery | Acceptance gate, agreed evidence package, QA report |
QA dimensions
We apply your acceptance criteria at the agreed coverage level, record the checks performed, and report the resulting metrics and exceptions.
| Dimension | Metric | Method |
|---|---|---|
| Transcription accuracy | Project-defined WER target | Word Error Rate measured against an agreed reference set |
| Speaker diarisation | Project-defined DER target | Speaker boundaries reviewed against agreed references |
| PII redaction | Scoped detection and review | Method, coverage, and escalation rules agreed before delivery |
| Acoustic quality | SNR, clipping, reverb analysis | Signal-to-noise ratio and environment profiling |
| Metadata validation | Format, timestamps, speaker IDs | 16 kHz / 16-bit standard, timestamp accuracy |
| Edge case handling | Accents, domain terms, noise | Custom lexicons, annotators who speak the dialect or know the domain |
What the protocol records
Checks and exceptions: The protocol states which checks are performed, how results are recorded, and how exceptions are escalated and resolved.
Criteria: Your acceptance criteria are what we test against. We co-design QA protocols with your team before project kickoff. Criteria are version-controlled, so each change to your requirements is recorded.
Evidence mapped to your controls: Project documentation can map data-governance evidence to your internal controls and relevant EU AI Act obligations.
Making audio quality measurable
Quality is an agreed metric, a review plan and an exception process.
- Defined
- Acceptance metrics fixed in the project protocol
- Scoped
- Review coverage set as sampling or full review
- Logged
- Exceptions and decisions recorded in the evidence package
Why this matters: A useful QA plan reflects the real language, speaker, acoustic, and domain conditions the system must handle.
Project-specific governance artefacts
Evidence requirements vary by project. The delivery contract defines which artefacts are included and how they map to your review process. Delivery runs under the GDPR, with EU AI Act mapping and EEA delivery options.
| Artefact | Contents |
|---|---|
| Consent evidence | Collection evidence where the project scope requires it |
| Protocol summary | Version-controlled acceptance criteria and QA methodology |
| QA report | Quality results at the coverage level defined in the protocol |
| Exception log | Documented handling of edge cases and rejections |
Frequently asked questions
What audio formats and codecs do you support?
We accept WAV, FLAC, MP3, and most common codecs. Standard delivery is uncompressed 16 kHz / 16-bit WAV, or your specified format. Transcoding handled as part of ingestion.
Can I define custom acceptance criteria?
Yes. We co-design acceptance criteria with your team before project kickoff. This covers WER thresholds, acoustic quality requirements, metadata specifications, and domain-specific rules.
What happens if data fails acceptance criteria?
The remediation path is agreed in the project protocol. Depending on the failure type, this can include correction, re-collection, exclusion, or documented acceptance of an exception.
How is PII redaction checked?
Detection methods, human review coverage, evidence fields, and escalation rules are defined for the data and risk profile. Any rights-request process is documented in the applicable project agreement.
What documentation do you provide for ML audits?
The evidence package can include a dataset card, collection and annotation guidance, agreed metadata, QA results, an exception log, and version history. The exact artefacts are fixed during scoping.
What is the typical QA turnaround time?
Timing depends on volume, review coverage, language mix, acoustic conditions, and the acceptance gate. The delivery plan is agreed after the source data and criteria are reviewed.
How do you handle edge cases like accents or domain terms?
We build custom lexicons for your domain and recruit annotators who speak the dialect or know the domain when required. Edge cases are escalated to expert adjudicators with documented resolution.
Scope a QA protocol
Describe your data, metrics and review requirements. YPAI designs a QA protocol for your project and sends a scoped response based on them.
Connecting data acceptance criteria to model evaluation, reviewer rubrics, and regression gates? See the speech evaluation programme.
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