The code to enter is:

The same as the previous room, 117

Key 1 is morse code with spaces being dots and tabs being dashes. This yields the text:

SUMFREQFLOORADD6049ADDAFPRSQRT

Key 2 is, as f'' figured out (Don't know how to do links to other answers or users) is decimal ascii representation. Converting this to ascii code yields:

|-|--------|--------|--------|--------|

|-|--------|----q---|--------|--------|
C5                   q   q    e
|-|--------|---e----|--------|--------|
                        e   e  e e
|-|q---q---|e-e-----|--------|--------|
#                               e
|-|--------|--------|--------|--------|
      e   e  e                    q
C4

Converting all of the notes in the key signature to their frequencies gives us this:

0 x 698.456 |-|--------|--------|--------|--------|
0 x 659.255 
1 x 587.330 |-|--------|----q---|--------|--------|
3 x 523.251 C5                   q   q    e
1 x 493.883 |-|--------|---e----|--------|--------|
4 x 440.000                        e   e  e e
4 x 391.995 |-|q---q---|e-e-----|--------|--------|
1 x 369.994 #                               e
0 x 329.628 |-|--------|--------|--------|--------|
4 x 293.665      e   e  e                    q
0 x 261.626 C4

Following the instructions in Key 1:

SUMFREQ = sum of the frequencies = 7523.600
FLOOR(SUMFREQ) = 7523
FLOOR(SUMFREQ) + 6049 = 13572
FLOOR(SUMFREQ) + 6049 + AFPR (answer from previous room = 117) = 13689
SQRT(FLOOR(SUMFREQ) + 6049 + AFPR) = 117