Audio fixtures

Pre-recorded 16kHz mono 16-bit PCM WAV files. Used by voice-roundtrip.test.mjs and voice-full-flow.test.mjs as the source for Chromium's --use-file-for-fake-audio-capture flag.

File	Content	Use case
utterance-add.wav	"What is two plus two?"	Semantic verify: response must mention 4 / four
utterance-joke.wav	"Tell me a one line joke."	Liveness: response just needs to exist and be coherent
utterance-brain-query.wav	"Search the brain for any recent notes about projects."	Tool-call verify: response should invoke search then summarize results

Regenerating

The fixtures are committed verbatim so tests are reproducible across machines. If you ever need to regenerate (different voice, different utterance, etc.):

# macOS only — uses the `say` command + ffmpeg.
generate_fixture() {
  local text="$1"
  local out="$2"
  local tmp_aiff=$(mktemp /tmp/agent-voice-fixture.XXXXXX.aiff)
  /usr/bin/say -v Samantha -o "$tmp_aiff" "$text"
  ffmpeg -y -i "$tmp_aiff" -ar 16000 -ac 1 -sample_fmt s16 "$out"
  rm -f "$tmp_aiff"
}

generate_fixture "What is two plus two?" utterance-add.wav
generate_fixture "Tell me a one line joke." utterance-joke.wav
generate_fixture "Search the brain for any recent notes about projects." utterance-brain-query.wav

For Linux operators without say, use any TTS that produces 16kHz mono WAV (e.g., espeak, piper, OpenAI TTS). The exact voice doesn't matter as long as Whisper can transcribe it back for semantic-verify assertions.