Hum sound effects

Repeating tone

5238 1585

Superior electronic

3682 1056

Transformer noise

5361 1618

Noise of footsteps on the bridge (muffled, echo)

3531 910

Noise of crowd in the hallway

3306 651

Airplane flying high in the sky

4927 1224

Power lines, wires are buzzing

4264 761

Neon lamp buzzing

5461 1520

Noise of electricity

4961 1038

Transformer box

3715 676

Fantastic drone

4347 926

Rumble with creaks and knocks

4002 1355

Cave, sinister atmosphere

3322 839

Distant rumble

4518 1208

Rumble in the subway tunnel

3405 684

Rumble of an avalanche

4598 1159