# Audio Troubleshooting (Linux) ## Problem: Espeak / Fallback is silent If the fallback audio (espeak) is not audible, it is likely muted in the system's sound mixer (e.g., PulseAudio or PipeWire). ### The "Long String Trick" to Unmute Short audio fragments often disappear too quickly from the mixer GUI to be unmuted manually. To fix this, force a long audio stream: ```bash echo "$(yes "Testing sound. " | head -n 50)" | espeak