no valid signals and strange time stamp for signal_ts #58
Description
when running ros2 launch audio_bringup wall_simulated.launch.py
tried to print [SYNC] pose_ts: 1750551239229, signal_ts: 9769, lag = 1750551229460 ms
strange time stamp for signal_ts
This clearly shows that pose_ts is a normal Unix timestamp in milliseconds, but signal_ts is an unusually small 4-digit number. This results in a massive lag and causes the system to reject all signals as invalid.
Env: ROS2 galactic Ubuntu 20.04 Virtual Machine