Detect pauses in a data stream

To detect a certain period of inactivity from a data source, you can use the delay object. The delay object can only delay one bang at a time, and if it receives another bang before the first one is sent out, it discards the first one and delays the second one. Thus, each time an event occurs, you can simply bang the delay to schedule a bang for some time in the future. As long as events keep occuring within that time interval, delay will never send anything out because the previous bang gets discarded. Only when the time interval elapses because of inactivity will delay be able to send its output.