0:01
Scraping a metal shovel on cement and scooping slush
0:01
Morse code letter "o"
0:01
Morse code with a weak signal, number seven
0:01
Machine lever pull or crank.
1:00
Test tone, sine wave at 4khz for 60 seconds at -12db, loop
1:00
Test tone, sine wave at 50hz for 60 seconds at -12db, loop
0:01
Morse code with a weak signal, number five
0:01
Morse code letter "s"
0:01
Morse code letter "l"
0:01
Morse code with a weak signal, number zero
1:00
Test tone, sine wave at 10khz for 60 seconds at -12db, loop
0:01
Test tone, oscillating log sweep sine wave, ascending 20hz through 20khz for 1 second at -12db
0:01
Morse code with a weak signal, letter "d"
1:00
Test tone, sine wave at 250hz for 60 seconds at -12db, loop
0:12
Radio, tune to a station
0:01
Morse code with a weak signal, letter "w"
1:00
Test tone, sine wave at 125hz for 60 seconds at -12db, loop
1:00
Test tone, brown noise, 60 seconds -12db, loop
0:01
Morse code with a weak signal, number eight
0:01
Morse code letter "t"