Table:
0
A
B
C
D
E
1
String
Scientific pitch
Helmholtz pitch
Interval from middle C
Frequency ( Hz )
2
1st
E 4
e'
major third above
329.63
3
2nd
B 3
b
minor second below
246.94
4
3rd
G 3
g
perfect fourth below
196.00
5
4th
D 3
d
minor seventh below
146.83
6
5th
A 2
A
minor tenth below
110.00
7
6th
E 2
E
minor thirteenth below
82.41

Questions and formulas:
Question: What is the lowest Frequency where the Hemholtz pitch is d?
Formula: MIN(FILTER(E1,C1="d"))
Formula2: MIN(FILTER(E2:E7,C2:C7="d"))
Level: easy
Question: What is the scientific pitch when the Helmholtz pitch is D?
Formula: FILTER(B1,C1="d")
Formula2: FILTER(B2:B7,C2:C7="d")
Level: easy