Piston Pump Motor Revs, Low and Fast with Chugs Take 1

1High-Speed Servo Revs with Choppy Grinding Buzz Take 2

2Very Fast Buzzy Servo Revs up and Down Take 1

3High-Speed Servo Whine with Two Quick Cycles Take 2

4Servo Revs up and Down with Grind and Air Chuffs

5Moviola Revs up Fast with Clicks

6Servo Clicks with Flicking Scrape

7Drilling Tool Grinds and Whines Steady with Air Hiss at Tail

8Servo Revs up Fast with Whine Take 3

9Servo Grinds and Whines Fast Take 3

10Double Servo Rev with Clicks Take 1

11Servo Revs up with Long Air Hiss

12Servos Make a High and Buzzy Rev up with Long Air Hiss and Chuff

13Servo Steadily Strains, Buzzes and Chokes

14Display Servo Hums and Slowly Clicks Take 1

15Camera Shutter Motor Produces Fast Clicks Take 2

16Camera Shutter Motor Produces Fast Clicks Take 3

17Piston Pump Motor Revs, Low and Fast with Chugs Take 1

18Piston Pump Motor Revs, Low and Fast with Chugs Take 2

19Camera Servo Motor Hums and Grinds Take 2

20Dual Tone Servo Wind up Take 1

21Dual Tone Servo Wind up Take 2

22Servo Is Strained or Shorting out Take 1

23Camera Clicks and Winds with No Motor Take 4

24Dull, Quick Servo Grinding Take 2

25Processed Fast Servo Rev Take 3

26Electric Servo Buzz and Fast Rev

27Dying, Buzzing and Sputtery Servo Revs

28Processed Fast Servo Rev Take 2

29Processed Fast Servo Rev Take 1

30Buzzy Servo Revs with Metallic Grinding

31Dull, Quick Servo Grinding Take 1

32Fast, High Pitched Servo Rev Up

33Low Pitched Servo Grinding

34Robotic Type High Rev Up

35Servo Is Strained or Shorting out Take 3

36Camera Clicks and Winds with No Motor Take 3

37Camera Clicks and Winds with No Motor Take 2

38Camera Clicks and Winds with No Motor Take 1

39Fast Servo Rev Down with Grind

40Fast Servo Rev with Grinding in Motor Take 1

41Dull Servo Grind Rev Take 1

42Choppy Servo Rev up and Down Take 3

43Choppy Servo Rev up and Down Take 2

44Broken Servo Powers up with Flapping Clicks

45Camera Servo Motor Hums and Grinds Take 1

46Camera Shutter Motor Produces Fast Clicks Take 4

47Camera Shutter Motor Produces Fast Clicks Take 1

48Display Servo Hums and Slowly Clicks Take 2

49Small Compressor with Dull, Rattling Rev Take 4

50Small Compressor with Dull, Rattling Rev Take 2

51Small Compressor with Dull, Rattling Rev Take 1

52Double Servo Rev up and Air Chuff Take 1

53Double Servo Rev up and Air Chuff Take 2

54High and Buzzy Servo Rev up with Air Hiss and Chuff Take 3

55Mechanical Servos Rev up, Buzz and Release Air

56High Servo Squeak Rev or Very Fast Zip Take 3

57Servo Makes a Quick Zip up Chug Take 2

58Servo Makes a Quick Zip up Chug Take 1

59Camera Servo Motor Click

60Low Servo Tone with Squeaky Rev up and Down

61Servo Revs up Fast with Whine Take 2

62Servo Chugs with Fast Zippy Rev Take 3

63Drilling Tool Grinds and Revs Steadily Take 2

64Servo Chugs with Fast Zippy Rev Take 1

65Drilling Tool Makes Low Revs and Whines

66Two Servos Whine and Grind with Fast Rev up Take 2

67Copier Machine Motor Grinds up and Down

68Servo Spins up with Very Fast Rev Bursts

69Relay Buzzes and Clicks Fast

70Servo Grind Fast up and Down

71Servo Whines up with Small Air Chuff at End

72Servo Makes a Fast High Rev up Twice

73Metallic Grinding Spins from a Servo

74Gritty Servo Strains to Rev up and Down

75High-Speed Servo Whine with Two Quick Cycles Take 1

76Slow, Grinding Servo with Low Purring Pulses

77Very Fast Buzzy Servo Revs up and Down Take 2

78Choppy Printer Servo Winds up and Down from a High Speed and Strains to Slow Down

79Servo Pulsing Alarm Buzz with Whooping Tone

80Servo Whines and Strains with High-Speed Revs

81Solenoid Clicks and Sparks

82Small Vacuum Bellow Inflates with Sparks

83Large Metallic Casters Rolling

84Small Metallic Casters Rolling

85DC Motor Revs with Steady Raspy Buzz

86Small Servo Revs with a Raspy Buzz Take 2

87Small Servo Revs with a Raspy Buzz Take 1

88High-Speed Blower or Vacuum Revs and Runs Fast

89Electric Turbine Blower Whines and Runs at a High Speed with a Long Smooth Wind Down Take 4

90Electric Turbine Blower Whines and Runs at a High Speed with a Long Smooth Wind Down Take 3

91Electric Turbine Blower Whines and Runs at a High Speed with a Long Smooth Wind Down Take 2

92Electric Turbine Blower Whines and Runs at a High Speed with a Long Smooth Wind Down Take 1

93Electric Turbine Blower Whines and Slowly Runs Down Take 4

94Electric Turbine Blower Whines and Slowly Runs Down Take 3

95Fan Blower Runs with Low Tone

96Fan Whoosh with Choppy Run and Long Wind Down

97Rapid Buzzy Solenoid Burst Take 3

98Oscillator Generates Chirpy Dual Tone Beeps Take 14

99Oscillator Generates Chirpy Dual Tone Beeps Take 11

100Oscillator Generates Chirpy Dual Tone Beeps Take 10

101Oscillator Generates Chirpy Dual Tone Beeps Take 9

102Oscillator Generates Chirpy Dual Tone Beeps Take 8

103Oscillator Generates Chirpy Dual Tone Beeps Take 7

104Oscillator Generates Chirpy Dual Tone Beeps Take 6

105Oscillator Generates Chirpy Dual Tone Beeps Take 5

106Oscillator Generates Chirpy Dual Tone Beeps Take 2

107Oscillator Generates Chirpy Dual Tone Beeps Take 1

108Oscillator Dial Spinning and Fluctuating in Tone Take 3

109Oscillator Dial Spinning and Fluctuating in Tone Take 2

110Small Manual Piston Motor Chugging up and Down with Bellow Honking Take 3

111Small Piston Pump Motor Revs up and Down with a Sputter Take 5

112Small Piston Pump Motor Revs up and Down with a Sputter Take 4

113Small Manual Piston Motor Chugging up and Down with Bellow Honking Take 1

114Small Piston Pump Motor Revs up and Down with a Sputter Take 3

115Small Piston Pump Motor Revs up and Down with a Sputter Take 2

116Small Piston Pump Motor Revs up and Down with a Sputter Take 1

117Electric Relay Burst with Dull Buzz and Strain Take 2

118Electric Relay Burst with Dull Buzz and Strain Take 1

119Servo Is Strained or Shorting out Take 2

120Fast and Buzzy Servo Zip Take 1

121Dull Servo Grind Rev Take 2

122Fast Servo Rev with Grinding in Motor Take 2

123Fast Servo Grind and Buzz Up

124Servo Compressor Choppily Revs

125Dull, Quick Servo Grinding Take 3

126Choppy Servo Rev up and Down Take 1

127Small Compressor with Dull, Rattling Rev Take 3

128Fast and Buzzy Servo Zip Take 2

129Servo Makes a Fast Grinding Rev with Air Hiss and Quick Chuff Take 2

130High Servo Squeak Rev or Very Fast Zip Take 2

131High Servo Squeak Rev or Very Fast Zip Take 1

132Double Servo Rev with Clicks Take 2

133High and Buzzy Servo Rev up with Air Hiss and Chuff Take 1

134High and Buzzy Servo Rev up with Air Hiss and Chuff Take 2

135Servo Makes a Fast Grinding Rev with Air Hiss and Quick Chuff Take 1

136Servo Makes a Quick Zip up Chug Take 3

137Motor Piston Pump Turns on and off with Bellow Honk

138Servo Chugs with Fast Zippy Rev Take 2

139Two Servos Whine and Grind with Fast Rev up Take 1

140Servo Makes Buzzy Revs from Slow to Fast Speed

141Drilling Tool Grinds and Revs Steadily Take 1

142One Quick Servo Rev Up

143Servo Revs up Fast with Whine Take 1

144High-Speed Servo Whine with Two Quick Cycles Take 3

145Servo Grinds and Whines Fast Take 2

146Servo Grinds and Whines Fast Take 1

147Rapid Buzzy Solenoid Burst Take 5

148Servo Spins, Buzzes and Whines with Rev Up

149Servo Makes a Fast Zip up and Down

150High-Speed Servo Revs and Runs in Spurts

151High-Speed Servo Revs with Choppy Grinding Buzz Take 1

152Electric Turbine Blower Whines and Slowly Runs Down Take 2

153Electric Turbine Blower Whines and Slowly Runs Down Take 1

154Choppy Printer Servo Winds up and Down

155Rapid Buzzy Solenoid Burst Take 4

156Oscillator Generates Chirpy Dual Tone Beeps Take 13

157Rapid Buzzy Solenoid Burst Take 1

158Oscillator Generates Chirpy Dual Tone Beeps Take 12

159Oscillator Generates Chirpy Dual Tone Beeps Take 3

160Oscillator Generates Chirpy Dual Tone Beeps Take 4

161Rapid Buzzy Solenoid Burst Take 2

162Oscillator Dial Spinning and Fluctuating in Tone Take 1

163Oscillator Generates Chirpy Dual Tone Beeps Take 15

164Electric Relay Clanks with Slight Ring off on Contact

165Small Manual Piston Motor Chugging up and Down with Bellow Honking Take 2

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