Re: [Harp-L] how to blow bend

[Vern <jevern@xxxxxxx>]

The resonant pitch of a Helmholtz (Jug, Ocarina) resonator is determined by its volume and the size of its orifice.  When you close the aperture (straw size) through your lips, you are changing the orifice size.

See:  http://en.wikipedia.org/wiki/Helmholtz_resonance

Vern

On Nov 24, 2011, at 6:12 AM, Bob Boyd wrote:

> The straw is a good analogy. Blow through the hole like you are blowing through a straw them imagine the straw got a lot smaller and you have to tighten your lips and blow harder through it to get the air in a smaller column going in. It took me a while to learn to do it. I wanted to do the blow bend like on Wammer Jammer with the A harp 10 blow bend.
> 
> Bob "The Captain" Boyd
> Texas Tide Band
> www.texastide.com
> 
> 
> There is a YT video out there somewhere that shows you how to practice listening for the tone change using a straw to blow bend? over blow?
> I tried it and it helped me hear what its supposed to sound like, but I still can’t come close to holding it without the straw.
> Maybe in my next life. lol
> 
> 
>