A Message From Mega Noise

A Musical Encryption

I might base too much here on musical knowledge, like knowing that the BPM is ♩ = 120.

The audio file supplied by Mega Noise contains 83 notes that vary by tone and length. Given the hint that ♩ = 120, it is determined that there are 5 note lengths of sixteenth, eight, quarter, half and whole note. Using an 88 piano key notation, the 83 notes are classified below.

NoteKeyLength

1

57

Half

2

52

Quarter

3

42

Whole

4

48

Sixteenth

5

52

Quarter

6

51

Half

7

36

Quarter

8

51

Sixteenth

9

46

Whole

10

37

Sixteenth

11

53

Half

12

44

Quarter

13

53

Eighth

14

52

Half

15

51

Whole

16

55

Quarter

17

31

Half

18

49

Whole

19

45

Quarter

20

28

Sixteenth

21

57

Whole

22

59

Eighth

23

31

Whole

24

40

Half

25

46

Sixteenth

26

53

Whole

27

59

Quarter

28

37

Whole

29

38

Sixteenth

30

40

Whole

31

56

Whole

32

54

Half

33

58

Eighth

34

41

Half

35

40

Quarter

36

37

Quarter

37

45

Whole

38

50

Sixteenth

39

47

Quarter

40

29

Quarter

41

30

Whole

42

56

Half

43

43

Quarter

44

56

Sixteenth

45

52

Whole

46

61

Whole

47

34

Sixteenth

48

39

Sixteenth

49

44

Whole

50

54

Sixteenth

51

52

Sixteenth

52

60

Eighth

53

34

Quarter

54

32

Quarter

55

35

Whole

56

36

Sixteenth

57

38

Whole

58

58

Whole

59

57

Eighth

60

34

Half

61

63

Quarter

62

54

Sixteenth

63

38

Quarter

64

29

Eighth

65

41

Sixteenth

66

46

Half

67

61

Quarter

68

47

Whole

69

45

Sixteenth

70

29

Half

71

50

Half

72

53

Quarter

73

60

Whole

74

33

Eighth

75

28

Quarter

76

32

Sixteenth

77

61

Half

78

63

Sixteenth

79

50

Whole

80

58

Sixteenth

81

62

Eighth

82

33

Whole

83

29

Whole

Each note represents a binary bit in a 5 bit binary sequence for each tone which resolves to a value from 1-26 when converted to ASCII and a final message.

Tone16th8thQHW5-bitDeca1z26

28

1

0

1

0

0

10100

20

T

29

0

1

1

1

1

01111

15

O

30

0

0

0

0

1

00001

1

A

31

0

0

0

1

1

00011

3

C

32

1

0

1

0

0

10100

16

T

33

0

1

0

0

1

01001

9

I

34

1

0

1

1

0

10110

22

V

35

0

0

0

0

1

00001

1

A

36

1

0

1

0

0

10100

20

T

37

1

0

1

0

1

10101

5

E

38

1

0

1

0

1

10101

21

U

39

1

0

0

0

0

10000

16

P

40

0

0

1

1

1

00111

7

G

41

1

0

0

1

0

10010

2

R

42

0

0

0

0

1

00001

1

A

43

0

0

1

0

0

00100

4

D

44

0

0

1

0

1

00101

5

E

45

1

0

1

0

1

10101

21

U

46

1

0

0

1

1

10011

19

S

47

0

0

1

0

1

00101

5

E

48

1

0

0

0

0

10000

16

P

49

0

0

0

0

1

00001

1

A

50

1

0

0

1

1

10011

19

S

51

1

0

0

1

1

10011

19

S

52

1

0

1

1

1

10111

23

W

53

0

1

1

1

1

01111

15

O

54

1

0

0

1

0

10010

18

R

55

0

0

1

0

0

00100

4

D

56

1

0

0

1

1

10011

19

S

57

0

1

0

1

1

01011

11

K

58

1

1

0

0

1

11001

25

Y

59

0

1

1

0

0

01100

12

L

60

0

1

0

0

1

01001

9

I

61

0

0

1

1

1

00111

7

G

62

0

1

0

0

0

01000

8

H

63

1

0

1

0

0

10100

20

T

The final message reads

TO ACTIVATE UPGRADE USE PASSWORD SKYLIGHT

Entering the password unlocked the computer and provided access to Encrypted Location Data

Last updated