Sound has power/energy in it. Can we extract or generate power from sound?

Question

As sound has energy in it. It has vibrations. If we keep some paper pieces in front of speakers they vibrate and move. So can we extract energy from sound like we generate power from solar power and from wind power.

Answer 1

Yes, it is

An acoustic motor transforms the power of the sound in a constant and unlimitied energy source, when mechannical waves travel in a resonant cavity, the stored energy of the cavity supplies the power, the resonant frequency of the motor or cavity must match with the starting sound frequency

The mechannical vibrations of a sound wave causes electrical vibrations at the same frequency, then there is energy by the formula

E = h * f

Of the Quantum Mechannics and if the wave form is not senoidal there is armonics of the level you want, so, there is people can generate nuclear reactions using only sound or get the split and get hydrogen of the common water


Bye

Answer 2

Sound has energy. It is possible to extract energy from sound, but it is not efficient. You would probably expend more energy controlling the extraction device than you would get from the sound.

A microphone is a good example. The microphone converts pressure waves (sound) into an oscillating voltage, which could theoretically be used to power a tiny electrical device. However, the power is very, very low.

Answer 3

A cruising automobile (suv) that has already speeded up as a lot as sixty 5 mph will use about 174hp or 130kw to proceed cruising.a million yet this needs to conquer some rolling resistance of the tires, air resistance and the tremendous inefficiency of the engine and the motorized vehicle rigidity prepare. The enter capacity requirement that's decreased by technique of resistance and the inefficiency of the engine is composed of an output of 30% before the drivetrain. Taking the drivetrain into interest performance of our motorized vehicle is decreased to a depressing 15% (2) or 26 hp or 19.5 kw for the output capacity. an electric powered motor is about 95% effective on the different hand. at the same time as we would assume an analogous rigidity prepare lack of about 15%, in actuality the electric powered automobile would not require the heavy flywheel or transmission) when we take regenerative breaking into interest we are able to assume an universal performance of about ninety% for an electric powered motorized vehicle.3 So if we take an analogous reason requirement the enter requirement for an electric powered motorized vehicle will be equivalent to .9x = 26 hp or 28.89hp or 21.667kw ( = 21667 watts.) (A purpose equipped electric powered motorized vehicle would likely contain more advantageous efficiencies and would nicely be predicted to have an enter capacity requirement of three/5 to three/4 of this volume.)4 With appreciate to a radio station. A broadcasting signal of 10,000watts of capacity to the antena is an analogous as a .a million millivolts in line with meter electric powered field capacity.5 it isn't a lot of capacity. this variety of capacity placed into an antena has to radiate outward. The capacity disipates in accordance to the inverse sq. regulation.6 it will be obtainable yet performance would might want to strengthen previous what looks the obtainable capacity. As an aside there's a rumor that N. Tesla had an invention that would want to run a automobile doubtless with out gas and he changed into really prepared on transmitted capacity to autos.7 present day RFID chips activate and reply utilising the very small capacity contained in the signal despatched to them.8

Answer 4

There are ways to generate acoustic energy that allow you to cool things down. As you realize if you have to pay for air conditioning, it takes energy to cool things down, so in that sense we use acoustic energy to perform useful work.

Answer 5

Well, seeing as the sound would have to be so loud to generate any sort of substantial amount of energy, it would be a very unfeasible method.