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app-audio-sandbox

v0.1.2

Published

7 days ago

A Playwright-powered silent audio sandbox for app voice flows.

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App Audio Sandbox

app-audio-sandbox is a Playwright-powered CLI for testing app voice and audio flows without playing sound through your speakers.

It launches or attaches to an app, injects browser audio/STT/TTS instrumentation, records events, captures TTS audio artifacts, and loops captured app audio back into the sandbox microphone while keeping playback muted by default.

Install

npm install -g app-audio-sandbox

Usage

app-audio-sandbox list
app-audio-sandbox run --scenario nudge-voice-cutoff
app-audio-sandbox run --scenario nudge-voice-cutoff --record-audio
app-audio-sandbox run --scenario nudge-voice-cutoff --record-audio --real-tts
app-audio-sandbox run --scenario nudge-voice-cutoff --audible

--record-audio captures audio source files without speaker playback. --audible is the only mode that allows sound to reach the speaker. --real-tts lets the target app's TTS endpoint generate listenable audio instead of the deterministic mock audio used by default. Recorded Nudge runs also include review.html, which plays captured app audio and browser-friendly scripted STT WAV inputs on the same timeline so cutoff causes are audible during review.

Built-In Scenarios

nudge-voice-cutoff
nudge-echo-filter
nudge-native-tts-routing
nudge-stt-warmup

Each run writes an artifact folder with events.json, a Playwright trace, video, final screenshot, review.html when a review timeline is available, and captured audio files when recording is enabled.