Switch on Air Conditioner Runs and Turns off with Air Fill Only

1Tonal Hum with Ventilation Noise on Ship

2Low Tonal Hum and Air Conditioner Noise on Ship or in Basement

3Heavy Fan Starts up with Buzz with Whir and Whine Down

4Industrial Silo Fan Runs Steady and Winds Down

5Punching Press Running with Impacts and Low, Dull Knocks and Thumps

6Slow Thumps of Punch Press with Small Air Release and Metal Rattle Take 1

7Rock Crusher Running with Squeaks and Chugs and Slow Wind Down

8Rock Crusher Running Very Fast with Squeaks and Chugs and Slow Wind Down

9Metallic Squeaky, Large Fan Slowly Winds Down with Scrapes

10Tractor Running from Interior Perspective

11Forklift Starts up with Chugs and Run Steady with Brake Groans from Interior

12Metallic Squeaks of Engine Belt Running

13Interior Garage Ambience with Heavy Door Rolling Open with Heavy Motor Squeaks and Screeches Take 1

14Rock Crusher Runs with Dirt and Debris Falling

15Busy Punch Press Running with Air Hiss

16Slow Impacts of Punch Press Running with Air Release

17Switch on Machine and Run with High Tone and Squeaks

18Ship Moans with Dull, Metal Wronks from Deep Hull

19Reverberant Clangs of Cars Passing over Bridge from Interior of Structure

20Howling Wind from Interior Perspective with Eerie Low Hum

21Bubbling, Hissy Stream in Reverberant Interior

22Large Airy Airplane Hanger with Birds and Distant Hammering

23Wet, Drippy Reverberant Space with Heavy Drips on Water and Various Surfaces

24Hotel Lobby with Reverberant Activity, Light Walla and Occasional Phone Rings

25Lobby in Office Building with Very Quiet Ventilation Noise

26Large Airy Lobby Area with Very Light Movement and Reverberant Elevator Bell

27Large Very Quiet Room with Light Ventilation Noise

28Large, Reverberant, Airy Hall with Light Movement and City Hum

29Quiet, Large and Airy Room Tone

30Large Arena Corridor with Very Noisy Air Conditioner Rattle and Hum

31Large Arena with Air Conditioner Hum and Rattle and Some Distant Voices

32Interior Freezer Ambience with Machine Hum

33Constant Machine Hum with Ventilation Noise

34Arena Corridor with Ventilation Noise and Low Rumble

35Airy Room with Light Traffic Wash and Ventilation Noise

36Switch on Air Conditioner Runs and Turns off with Air Fill Only

37Room with Medium Traffic Wash

38Room with Light Traffic Wash

39Small Room with Very Light Movement

40Very Quiet Dead Air Room Tone Ambience

41Ventilation Noise with Light Hum

42Small Room with Computer Hard Drive Noise

43Large, Airy Ambience with Air Conditioning Hum

44Ventilation Noise, Buzz and Rattle

45Heavy Machine Whir with Air Conditioning Hum

46Slow Thumps of Punch Press with Small Air Release and Metal Rattle Take 2

47Interior Garage Ambience with Heavy Door Rolling Open with Heavy Motor Squeaks and Screeches Take 2

48Metallic Punch Press Running with Impacts and Rattles

49Heavy Machine Switches on, Runs with Rattles and Switches off in Reverberant Space

50Ship's Ventilation Noise with Low Hum

51Generator Starts up and Runs with Rattles, Spinning Gears and Small Air Release

52Generator Starts up and Runs Smoothly

53False Fan Startup with Slow Wind Down

54Switch on Machine, Run Rough with Rattles, Scrapes and Turn Off

55Very Airy, Drippy, Reverberant Interior with Water Splats Close and Distant

56Heavy Machine Hum with Rattling Air Conditioner Noise

57Heavy Air Conditioner Hum and Buzz

58Heavy Machine Hum with Ventilation Noise

59Airy Room Tone with Medium Traffic Wash

60Ventilation Noise and Steady Hum

61Supply Room Ambience with Air Conditioner Rattle and Ventilation Noise

62Large, Airy Room with Light Hum

63Office Room with Light Traffic Hum

64Airy Room with Traffic Wash Through Open Window

1Geese and Ducks in Pond from a Medium Distant Perspective

2Subway Train Arrives with Long Brake Squeals and Rail Clicks and Stops Close to Mic

3Continuous Single Cicada Ratchet with Faint Bird in Background

4Victoria Train Station London in London with General Background and Activity

5Arena Crowd Wave Whoosh for Crowd Transition Take 2

6Country Night Ambience with Crickets and Insects Chirping and Buzzing and Frogs Calling

7Swarm of Flies Active at a Close Perspective

8Marsh Ambience with Large Bed of High-Pitched Insect Hum, Light Chorus of Frogs and Intermittent Exo

9Subway Platform Ambience with Distant Roar and Close Walla

10Large Subway Platform Wide Perspective with Train Arriving with Brake Groan and Air Hiss