Tonal Hum with Ventilation Noise on Ship

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

Heavy Fan Starts up with Buzz with Whir and Whine Down

Industrial Silo Fan Runs Steady and Winds Down

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

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

Rock Crusher Running with Squeaks and Chugs and Slow Wind Down

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

Metallic Squeaky, Large Fan Slowly Winds Down with Scrapes

Tractor Running from Interior Perspective

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

Metallic Squeaks of Engine Belt Running

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

Rock Crusher Runs with Dirt and Debris Falling

Busy Punch Press Running with Air Hiss

Slow Impacts of Punch Press Running with Air Release

Switch on Machine and Run with High Tone and Squeaks

Ship Moans with Dull, Metal Wronks from Deep Hull

Reverberant Clangs of Cars Passing over Bridge from Interior of Structure

Howling Wind from Interior Perspective with Eerie Low Hum

Bubbling, Hissy Stream in Reverberant Interior

Large Airy Airplane Hanger with Birds and Distant Hammering

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

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

Lobby in Office Building with Very Quiet Ventilation Noise

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

Large Very Quiet Room with Light Ventilation Noise

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

Quiet, Large and Airy Room Tone

Large Arena Corridor with Very Noisy Air Conditioner Rattle and Hum

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

Interior Freezer Ambience with Machine Hum

Constant Machine Hum with Ventilation Noise

Arena Corridor with Ventilation Noise and Low Rumble

Airy Room with Light Traffic Wash and Ventilation Noise

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

Room with Medium Traffic Wash

Room with Light Traffic Wash

Small Room with Very Light Movement

Very Quiet Dead Air Room Tone Ambience

Ventilation Noise with Light Hum

Small Room with Computer Hard Drive Noise

Large, Airy Ambience with Air Conditioning Hum

Ventilation Noise, Buzz and Rattle

Heavy Machine Whir with Air Conditioning Hum

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

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

Metallic Punch Press Running with Impacts and Rattles

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

Ship's Ventilation Noise with Low Hum

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

Generator Starts up and Runs Smoothly

False Fan Startup with Slow Wind Down

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

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

Heavy Machine Hum with Rattling Air Conditioner Noise

Heavy Air Conditioner Hum and Buzz

Heavy Machine Hum with Ventilation Noise

Airy Room Tone with Medium Traffic Wash

Ventilation Noise and Steady Hum

Supply Room Ambience with Air Conditioner Rattle and Ventilation Noise

Large, Airy Room with Light Hum

Office Room with Light Traffic Hum

Airy Room with Traffic Wash Through Open Window