A voice prompt is required when time is accelerated

I’ve noticed that radio audio cuts out when time is accelerated. Since the radio serves as a crucial auditory cue, could you design an alert sound—perhaps something similar to the radio’s closing tone, or another type of alert—to provide auditory feedback? For example, two beeps, with different alert sounds for different departments like the control tower and ground control. This would prevent players from having to stare intently at the progress bar during time acceleration simply because there’s no sound.