sound energy?

Hello Guest,

Yes.

Each time a microphone is used, that principle is being used.

Each time you hear a 'sound', your brain is receiving electrical impulses, from the fluid-filled logarithmic spiral tube of the inner ear, called the Cochlea, which it translates into "sounds".

Such a delicate but multipurpose design, which works so well, is a proof of a Designer.

Kind Regards....

Telephone, GSM, Microphone etc. all produce electrical energy from sound, but it is not so much power, it is nothing like you could get in your sound-driven car in the near future and start screaming to get yourself from A to B.

Hello Guest #2

There is not ever going to be a "sound-driven car".

Simple physics shows us, that is not going to happen, because the real energy in a sound wave is extremely small, and we hear it only because we hear not on an actual power level basis, but on a logarithmic level basis.

The energy in a sound wave, is insufficient to drive a "car" any distance, even if the "sound" was as a succession of explosions.

Kind Regards....

energy in a sound wave, is insufficient to drive a "car"

Oh, yeah? Well, I was watching TV with my kids last night (didnt' catch the title though) and saw an "Big Foot" looking creature that the good guys were trying to rescue. They were caught in traffic and the Big Foot guy started screaming, sounding like an ambulance or police car, and all the vehicles started moving over to the side. They escaped by being able to drive through traffic that way.

You could already consider most internal combustion engines as converters of very intense sound into rotational energy.

Hello electrone

No, those internal Combustion engines are Heat Engines, which mostly use the well-known Carnot Cycle, to produce usable power, at the same time over a third of the available Heat is rejected, normally into a water-filled radiator, or an air-cooled radiator (Volkswagen).

Approximately another third of the available heat is rejected out the exhaust pipe.

A Heat engine has to be able to reject heat, or else it cannot work.

Thus you should see, from between the points 1,2,3,4 in the graph, where the actual work can only exist within those points, that a truly efficient Heat Engine cannot ever be made, because most of the energy must be rejected as waste heat, for the Engine to actually work.

The noise is incidental to the generation and usage of part of the heat which is available by burning the fuel.

Kind Regards....

An explosion causes expansion and sound but sound do not cause the expansion.

My IC engine is driven by a soft sound of my wife's speech.