# frequency of open E & D

Discussion in 'Miscellaneous [BG]' started by jivetkr, Feb 14, 2003.

1. ### jivetkr

May 15, 2002
NJ
Does anyone know the frequency of the open E string?

In addition, does anyone know the frequency when its dropped to D?

2. ### wulf

Apr 11, 2002
Oxford, UK
As I recall, open E is just over 40Hz. Not sure about the D, but the B below is about 30Hz, so you're looking at somewhere around 38Hz. Of course, the tonal characteristics of the sound you hear also have a good measure of harmonic overtones blended in, which is why you can still get a good illusion of a low E even if your amp starts rolling off somewhere above 40Hz.

Any particular reason why you ask?

Wulf

3. ### Geoff St. GermaineCommercial User

B is 30.868Hz.
E is 41.203Hz.
A is 55Hz.
D is 73.416Hz.
G is 97.999Hz.

Good old differential equations class, I knew it would come in handy one day.

Geoff

4. ### NJL

Apr 12, 2002
San Antonio
thanks for the info, but do you happen to have the A just below low B?

5. ### wulf

Apr 11, 2002
Oxford, UK
In that case, D below the open E will be half the frequency of the open D (up one octave = double frequency)....

... about 37 Hz (so I was a little bit out)

Hope the rounded numbers don't offend anyone, but I went on to study history, not maths

Wulf

6. ### Geoff St. GermaineCommercial User

As wulf said, you always multiply by two to get the next octave of a given note.

So, for A

A0 = 27.5Hz
A1 = 55Hz
A2 = 110Hz
A3 = 220Hz
A4 = 440Hz

Hope that helps.

Geoff

7. ### HeavyDutySupporting CurmudgeonStaff MemberGold Supporting Member

Jun 26, 2000
Suburban Chicago, IL
Off to Misc...

8. ### Wrong RobotGuest

Apr 8, 2002
So...which ones the brown note

9. ### parrott

Dec 2, 2001
Edinburgh, Scotland

It's 7.something Hz, isn't it?

10. ### evilbrian9

Apr 23, 2000
Roswell, New Mexico
brown note = 96 cents below the lowest E flat

im studying all of this for my high school science olympiad where i had to build a guitar that resonated by having 2 styrofoam coolers bolted to the ends of the neck. sounds like a banjo and i played no one knows by queens of the stone age and actually got more points for knowing this than for playing the song...

11. ### h3llRa][seR

Sep 22, 2002
Lathrop, California
12. ### Petebass

Dec 22, 2002
QLD Australia
Wrong Robot is refering to a previous thread where everyone was getting carried away with accurate reproduction of the low B = 31.5hz. I nominated this as the "Brown Note" to give the south park fans a bit of a giggle but it seems to have stuck.......