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.
| Note | Key | Length |
|---|---|---|
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.
| Tone | 16th | 8th | Q | H | W | 5-bit | Dec | a1z26 |
|---|---|---|---|---|---|---|---|---|
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
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