Low frequency. Hard impact.
Low frequency. LFE. Rumble. Tremor.
Low frequency sound design accent. Rumble. Short with reverse swell.
Low frequency. Accent hit double tremor.
Low frequency. LFE, rumble. Long impact.
Tuner, static, frequency sweep
Laser zap frequency sweep
Radio turned on, tuned and turned off
FM transistor tuned in with short blasts of various stations both talk and music with intermittent soft ...