Door Knock

1 Helicopter
2 Spaceship
3 Shotgun
4 Thunderstorm
5 Factory Hooter
6 Diesel Train
7 Sports Car
8 Sea
9 Coyote
10 Lion
11 Tiger
12 Pigeons
13 Motorcycle
14 Boeing 707 Jet
15 Small Monoplane
16 Wagon Loading and Unloading Gravel
17 Underground Station
18 Storm With Thunderbolts
19 Blast of Wind
20 Avalanche
21 Waves
22 Tree Falling
23 Waterfall
24 Nightingales
25 Thrush
26 Skylark
27 Cuckoo
28 Lazer Shots
29 Cows
30 Pigs
31 Crow
32 Crickets
33 Frogs
34 Bumblebees
35 Dogs Growling
36 Racing Cars 1
37 Street Traffic
38 Giant Roller Coaster
39 Merry-Go-Round
40 Orchestra Warming Up
41 Submarine Sonar - Atari Tennis
42 Empty Trash Can Being Kicked
43 Digging With Spade
44 Military Trumpet
45 Door - Bell
46 Bicycle Bell
47 Alarm Bells
48 Spacecraft 1
49 Spacecraft 2
50 Cuckoo Clock
51 Emptying of a Wash Basin
52 Racing Cars 2
53 Hairdryer
54 Guiro's
55 Sawmill
56 Telegraph
57 Typewriter
58 Camera With Motors
59 Glass Window Breaking
60 Machine Tool for Wood
61 Pendulum Clock
62 Alarm Clock
63 Door Knock
64 Dish Breaking
65 Door Opening Key Locking
66 Water Filling and Draining
67 Siren 1
68 Bells
69 Steam Train
70 Footsteps On Gravel
71 Footsteps Circling
72 Crowd
73 Man Laughing
74 Man Yawning
75 Man Snoring
76 Heartbeat
77 Applause
78 Assorted Birds In Garden
79 Chicks
80 Siren 2