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Zachary Reno Posts: 1	Can I generate a sound of 19hz? I was wondering the most cost effective way to do some tests with 19hz. I would like to use speakers if possible, or where to find info on how long a tube would need to be, etc.. The resullts would be used for musical purposes. Thanks. 12-26-2004 03:56AM
Hank Bass Posts: 3	Zachary, If you want to generate music at 19 Hz, a speaker is certainly preferred. There are some manufacturers that give reasonable output at 19 Hz. The one that comes to mind is Community Speakers. If you would settle for a single frequency or multiples of a single frequency, you could use an organ pipe or a Helmholtz resonator. An organ pipe would need to be about 8 meters long but could be folded to make the dimensions reasonable. Helmholtz resonators are a little more flexible but, due to the lower Q, generally are not as efficient. You could drive a Helmholtz resonator with a relatively inexpensive electromagnetc drive (read that as voice coil from a speaker) or with air flow like in an organ pipe. H. Bass 12-29-2004 09:27AM
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