---
license: apache-2.0
language:
- en
task_categories:
- audio-to-audio
tags:
- full-duplex
- spoken-dialogue
- turn-taking
- synthetic
---

# FD_data_v1 — synthetic full-duplex spoken conversations

A small demo batch of fully synthetic two-speaker conversations with
scripted turn-taking events and construction-time ground-truth timestamps.
Voices are synthesized with [Kokoro-82M](https://huggingface.co/hexgrad/Kokoro-82M)
(Apache-2.0); transcripts are synthetic and contain no personal data.

Each row is one two-speaker conversation:

- `audio`: stereo 24 kHz WAV — **channel 0 = user, channel 1 = assistant**.
  Overlap (backchannels, interruptions) is real simultaneous audio across
  channels.
- `policy` / `instruction`: turn-management conditioning
  (none | interrupt | listen | backchannel | continue | acknowledge —
  taxonomy after Instruct-FD, arXiv 2607.20460).
- `turns`: JSON — per turn: speaker, text, absolute start/end, word-level
  onset/end timestamps (MMS forced alignment), `cut` + `unspoken` tail when
  the turn was interrupted (the full reference text is retained).
- `events`: JSON — scripted-event ground truth with realized timestamps
  (pause / assistant_backchannel / assistant_interrupt / user_backchannel /
  user_interrupt). Timestamps are constructed, not estimated.
- `fidelity`: JSON — per-clip whisper-large-v3-turbo script-fidelity ratios.
- `verify_pass` / `verify_checks`: deterministic verdict — the event
  structure is re-derived from the assembled audio via Silero VAD and checked
  against the script (bc timing/shortness, interrupt onset+cut, continue
  no-yield, acknowledge yield+adapted, pause no-takeover, listen
  no-talk-over).

Timing bands (gaps, reaction latencies) are v1 PLACEHOLDERS, not yet
calibrated against real-corpus statistics.