Guitarist and trumpeter try to play together in a room filled with helium?

Sep 2017
4
0
Hello,
How can I answer this question?

How does the musical experience of a guitarist and trumpeter try to play together in a room filled with helium?
 

Pmb

PHF Hall of Fame
Apr 2009
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335
Boston's North Shore
Hello,
How can I answer this question?

How does the musical experience of a guitarist and trumpeter try to play together in a room filled with helium?
Buy using extreme caution because there would be a lack of oxygen in the room which would first cause you to pass out then die. Instead get an oxygen tank with those hoses which fit into your nostrils. You should be perfectly safe if you do this. Check with your doctor before doing such a dangerous stunt.
 
Apr 2017
542
140
I think this question is really about the change in pitch ...

We're all know that breathing in a lung full of helium makes the voice higher ....

The frequency of vibration of the vocal cords has not changed , but the speed of sound has , resulting in the resonant frequency of the vocal tract being raised ...the resonant frequency is dependent on cavity size and speed of sound ....

So helium will change the tone of sound generators that rely on resonance ...

An acoustic guitar has a resonant chamber built in, so should give a higher pitch with helium ..... An electric guitar has none , so it's pitch will not change ...

A trumpet , like the vocal cavity relies on resonance , so pitch should change if helium is blown through it ...

I think that's right !?
 
Sep 2017
4
0
I think this question is really about the change in pitch ...

We're all know that breathing in a lung full of helium makes the voice higher ....

The frequency of vibration of the vocal cords has not changed , but the speed of sound has , resulting in the resonant frequency of the vocal tract being raised ...the resonant frequency is dependent on cavity size and speed of sound ....

So helium will change the tone of sound generators that rely on resonance ...

An acoustic guitar has a resonant chamber built in, so should give a higher pitch with helium ..... An electric guitar has none , so it's pitch will not change ...

A trumpet , like the vocal cavity relies on resonance , so pitch should change if helium is blown through it ...

I think that's right !?
That should be a correct explanation.
 
Jun 2016
1,370
696
England
The pitch of the trumpet is a balance between the driving frequency (of the trumpeters lips) and the resonant frequency of the length of tubing between the mouthpiece and the bell of the trumpet.

The resonant frequency of the tubing will change with changes in the speed of sound of the gas in the tubing, so the pitch will change.

The guitar pitch is dictated by the length and tension of the strings, and will be unaffected by changes in the speed of sound in the surrounding gas.
However (as you indicate) the resonance within the body of the guitar will change, so the quality of the sound will be affected, but not the pitch.
 
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Apr 2017
542
140
... the resonance within the body of the guitar will change, so the quality of the sound will be affected, but not the pitch.
Well surely the acoustic guitar is just the same as the voice box , the vocal cords produce the same frequency , but with helium , higher frequencies now resonate more and are predominant ... the pitch(frequency) in both guitar and voice box is higher with helium ..

It would be interesting to make a small hole in an acoustic guitar ,connect a tube , by feeding in different gases , or even cold or hot air , a change in pitch could be effected .
 
Jun 2016
1,370
696
England
There is a common misconception about the way the sound of the voice changes in Helium.
The basic driving frequency is produced by the vocal chords, and this (like the guitar string) doesn't change (much).

However the final sound that comes out of our mouths depends on a complex series of resonances in the vocal tract, nasal cavities, sinuses etc.

There may be a small change in the vibration of the vocal chords (due to resonant feedback)
but the main cause of the difference in timbre is the change in the resonant overtones rather than a change in the basic pitch of the voice.
 
Mar 2020
2
0
Roma, Italy
I think this is quite a dangerous thing. They may choke
 
Apr 2017
542
140
I think this is quite a dangerous thing. They may choke
No , they wouldn't choke .... just quietly die

Choking is ..."( a person or animal) having severe difficulty in breathing because of a constricted or obstructed throat or a lack of air. ..."

Breathing air(gas) or helium with no oxygen is a very smooth and pain free way to commit suicide , you would notice nothing , the brain would just stop functioning from lack of oxygen , just the same effect as CO poisoning ... dying in a small sealed small room, by using up all the oxygen in the air would be very stressful , the build up of CO2 alerts the body to breath more quickly and panic.
 
Jun 2016
1,370
696
England
One can breath helium quite happily, if there is enough oxygen mixed in.
I wonder if anyone has taken a musical instrument on a saturation dive?
Probably banned,
Imagine several weeks stuck in a small diving chamber with a harmonica player...
 
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