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Room tone in a city council chamber with crowd presence and faint voices

Room tone in a lobby with vent and elevators and footsteps

Room tone with fridge compressors, light

Room tone in Kennedy subway station with idling trains, steam chuffs and a fan, muted

Room tone in an abandoned stairwell

هوا چرخ ضامن دار, سفت, چند, پنوماتیک

هوا اخراج شلنگ سوپاپ انتشار پنوماتیک, پشت سر هم, ابزار, آهسته

هوا چرخ ضامن دار در حال اجرا ،

Closing metal air vent cover

Single air ratchet rev

Pneumatic air grinder

Pneumatic die grinder on, grind metal then off

Single air drill rev

Oxygen tank system air release. Slow.

Air compressor engine, machine motor, constant, loop