[sdiy] About infrasounds

[harry]

Howdy and welcome...

You can easily generate infrasounds on almost ANY synthesizer
directly.  If you can't you could modify them to include an octave
divider and get as arbitrarily low as you wish.

The problem will be how to do generate any substantial acoustic
output at that frequency.  Most speakers are hard pressed to go down
to 40Hz... the lowest note of Bass Guitar.

There are many designs for subwoofers... that is where you need to work.
oh... and get a really BIG amplifier as well....

H^) harry

Israel Sanchez Fuster wrote:

> Hi:
>
> This is my first message to the list. I hope I can learn a lot about
> synth building and all the electronics around. My real intention
> when I suscribed to the list was to ask if someone has an idea
> about how to generate infrasounds (I mean sounds lower than 15
> Hz) on stage.
>
> I am sure that an industrial music band called Throbbing Gristle
> (sure that some of the members know them) used to generate
> infrasounds on their gigs, what caused awful reactions on the
> crowd.
>
> Some people related with university physic departments told me
> about changin the medium to low the speed of wave and,
> subsequently, the frequency. But I'm not too much sure if the
> crowd of a gig would agreed to drown onto a pool of jelly just to get
> nauseated with some infrasounds. Or maybe they would be, who
> knows.
>
> The question is, in fact, is there any possibility of reducing the
> frequency of a synth-generated wave until the depths of infrasounds
> (lower than 15 Hz, I think)?
>
> Thanks in advance

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