Sometimes you will watch several minutes with no meteors, then the next minute will unexpectably burst with 5 or 6. But meteor observing has its rewards. Such bright meteors can exceed the brightness of Venus and are called fireballs. A fireball is caused by a larger chunk of rock burning up in the atmosphere. Such bright events may leave behind a vaporous looking train that may persist for several seconds or eve minutes.
Trains are the result of an ionization process.
Sometimes, very bright fireballs may penetrate deeper in the atmosphere and produce sonic booms, audible several seconds or minutes after. Observers reported sonic booms sometimes barely audible and sometimes as loud as a clap of thunder. More controversial is the appearance of a meteor with a sound occurring at the SAME time. MUCH slower than light. Since nearly all meteors, even bright ones burn up between 80-110 kilometres high, any sound will reach you quite some time after the sighting.