I would linke to aquire a natural horn to play a very low pitched tone. I am not educated in music, so I don't even know how to describe the tone in a correct way (is it "low pitched"?), but I found a fitting tone in a YouTube video:

I have not succeeded in finding out which properties will affect the tuning of such an instrument (diameter, length, form, material, etc.), so I was hoping to find some advice here. Best case information for me would be the name of a specific instrument and a link to a video or sound file. But it would also help me to get a hint how to better phrase my requirement (in technical more correct terms).

Thanks a lot for any help!

  • 1
    digeridoo is about as subfundamental as you can get. – Carl Witthoft Apr 29 '19 at 13:21

It's really pretty simple: for a horn (aka brass instrument or equivalent), you've got a tube with a vibrator at one end and the other end open. The fundamental pitch has wavelength (ideally) 4 times the tube length. Quoting from a random thesis paper on brass instruments,

The trumpet is considered in first order as tube closed at one with a pressure antinode at the playing end. This results in standing-wave solutions with an odd wavelength between the two ends, such that kn= nπ /2L, where n ing modal frequencies are therefore in the ratios 1:3:5:7: etc. x=L is not perfect, because the open end of the pipe radiates into the and also its own impedance.

Quoting from wikipedia,

Whole tube vs half tube The ease with which a player produces the fundamental note of each harmonic series for each tubing length of a modern brass instrument varies with the instrument's design. As bore width increases relative to length, it becomes easier for the player to resist the instrument's tendency to jump to the second harmonic instead of producing the fundamental frequency. Brass instruments with sufficient bore to allow the "whole tube" to vibrate easily, as opposed to "half the tube" (i.e., the second harmonic), are called "whole-tube" instruments.

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  • it's like you say: the longer the tube the deeper the tone. – Albrecht Hügli Apr 29 '19 at 14:18

You mean the pedal note or fundamental note?

„Certain low brass instruments such as trombone, tuba, euphonium, and alto horn are whole-tube and can play the fundamental tone of each harmonic series with relative ease. . Trombone and tuba in particular are often called upon to play pedal notes (fundamental notes) and so-called "false harmonics" and "false tones" below their normal range.“



The sound and tone depends

a) from the length

b) the the pressure of the lips

c) the angle of the air stream

you can try this out with a simple garden hose:

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  • Thank you for you answer! After reading the articles on "pedal note" and "fundamental note" I guess I mean the fundamental note - so I should ask: which properties of a natural horn foster a lower pitched fundamental note? I was hoping someone with more experience in musical instruments could listen to the "Gjallarhorn"-video I linked above and tell me something like "To have a horn make a sound like that, it must be very long and cone shaped, but its material doesn't matter" or "that's impossible, the sound from the video must be generated or at least reworked" or something like that. – wayn3 Apr 29 '19 at 12:50
  • aha ... why didnt you tell this to us. I will edit my answer :) – Albrecht Hügli Apr 29 '19 at 14:13

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