Voice detection profiles

A VAD profile tunes how Dino hears the end of a caller's turn. Each account starts with a read-only Default profile. Create your own when the default cuts callers off or waits too long.

Where a profile applies

Transport VAD runs the Silero model in one of two modes. A profile supplies the same five settings to either mode.

Mode	Audio into Silero
vox_vad_lite	Incoming PCM, no level normalization
vox_vad_enterprise	PCM normalized toward a telephony level, then Silero

Profiles apply only to these two modes. partner_vad and transport_client_vad reject a profile ID. Simulations use automatic VAD and take no profile.

The five settings

Setting	Flag	Valid value
Start threshold	--start-threshold	0–1, greater than the end threshold
End threshold	--end-threshold	0–1, less than the start threshold
Start delay	--start-ms	0–2000 ms of speech before start fires
End delay	--end-ms	0–5000 ms of silence before end fires
Smoothing	--smoothing-alpha	greater than 0, at most 1

Higher smoothing-alpha weights the newest probability more; lower values smooth harder. The CLI rejects out-of-range values instead of clamping them.

Manage profiles

Prompt your AI agent

Recommended

Use the `dino-pong` skill to manage a VAD profile.
Goal: <callers get cut off | long pauses before the agent replies>.
List the current profiles first and show me the Default values.
Propose new settings, show the exact command, and wait for approval before any change.

Use the Dino CLI directly

dino account vad-profile list
dino account vad-profile get --profile-id <profile-id>

# Create (all settings required), after approval:
dino account vad-profile create --name <name> \
  --start-threshold <0-1> --end-threshold <0-1> \
  --start-ms <0-2000> --end-ms <0-5000> --smoothing-alpha <0-1> \
  --confirm-mutation vadProfile.create

# Update one or more settings (omitted values are kept):
dino account vad-profile update --profile-id <profile-id> \
  --end-ms <0-5000> --confirm-mutation vadProfile.update

# Delete:
dino account vad-profile delete --profile-id <profile-id> \
  --confirm-mutation vadProfile.delete

An Account Manager targets a managed Client's profiles with --for-client <email>.

Use a profile on a call

Pass the profile with the transport VAD mode:

• agent preview-call: --vad-mode <mode> --vad-profile-id <profile-id>
• process create-batch|create-drip|create-inbound: --vad-mode <mode> --vad-profile-id <profile-id>
• experience assign|update: --vad-mode <mode> --vad-profile-id <profile-id>

Gotchas

• The Default profile is read-only and cannot be deleted. Copy its values into a new profile to adjust.
• A profile is owner-scoped. Select one that belongs to the call owner.
• A process or Experience stores the profile ID, not a fixed revision. A later update affects new calls only.
• Never combine --for-client and --for-user.

Next

Use Test your agent to hear a profile on one preview call.