VoiceTrust#

VoiceTrust answers one question: is this audio likely spoken by the enrolled owner?

Normal use:

• run STT for content
• run VoiceTrust for owner verification
• merge both before replying

Do not use this skill to define machine-specific commands. Local routing and machine policy belong elsewhere.

Runtime note#

This skill bundle is lightweight:

• source code and setup docs are included
• large model files are not bundled
• owner enrollment data is local runtime state and must not be published

If model assets are missing, read references/quickstart.md.

Output fields#

VoiceTrust results may include:

• speaker_match
• audio_quality
• overall_trust
• confidence
• identity_score
• trust_label
• decision
• decision_reasons
• speaker_id
• speech_duration
• speech_ratio
• vad_status
• failure_reason
• raw_scores.speaker_similarity

How to use the result#

Use trust_label for concise rendering. Use decision for command gating. Do not treat audio quality alone as owner identity evidence.

Trust label#

• high: identity_score >= 85 and confidence >= 80 and no failure
• medium: identity_score >= 72 and confidence >= 68 and no failure
• low: everything else

Common downgrade signals:

• vad_status != "ok"
• speech_duration < 2.5
• speech_ratio < 0.45
• speaker_match < 70
• failure_reason != null

Command gating#

For voice command execution:

• use the normal path when speech_duration >= 3.0
• allow a short voice sample only when all of the following are true:
  • speech_duration >= 1.2
  • speaker_match >= 85
  • confidence >= 85
• in all cases, command execution still requires:
  • speaker_match >= 78
  • confidence >= 80
  • identity_score >= 82
  • vad_status == "ok"
  • failure_reason == null

Interpretation:

• decision == "allow_command" means command execution may proceed
• decision != "allow_command" means do not execute commands from this sample
• non-command voice content may still be handled normally
• music / non-speech / non-command audio should not enter the command path

CLI example:

bash

uv run --python .venv/bin/python ../scripts/demo.py \
  --audio /path/to/sample.ogg \
  --speaker owner \
  --json

Human rendering#

Preferred compact format:

• Voice trust: high / medium / low
• Details: match <x> - trust <y> - confidence <z> - identity <i> - quality <q>
• if relevant: Decision: allow_command / reject_command

If degraded, say why briefly using decision_reasons. Do not over-claim certainty.

Failure handling#

• If STT succeeds and VoiceTrust fails: keep transcript, report trust as unavailable or inconclusive.
• If VoiceTrust succeeds and STT fails: keep trust result, report transcription failure.
• If both fail: say the audio could not be processed reliably.
• If decision != "allow_command", do not execute voice commands.

First-time setup#

For first-time setup, local installation, enrollment, or bootstrap, read:

• references/quickstart.md