Sound Emitting Diode

[SagaLore]

This would change the world, if this were ever invented.

Right now we are still dependent on magnetically driven cardboard vibrations.

Imagine a tiny diode emitting crystal clear sound in the full human audible range. :thumbsup:

 

[MichaelD]

To create sound, you must move air. The cardboard/membrane in a typical speaker (of any size) creates sound this way.

How would the SED create sound? What would move?

 

[SagaLore]

Originally posted by: MichaelD
To create sound, you must move air. The cardboard/membrane in a typical speaker (of any size) creates sound this way.

How would the SED create sound? What would move?

The SED would move.

 

[spidey07]

There already is. Piezo horns.

 

[ViviTheMage]

Originally posted by: SagaLore

Originally posted by: MichaelD
To create sound, you must move air. The cardboard/membrane in a typical speaker (of any size) creates sound this way.

How would the SED create sound? What would move?

The SED would move.

but...how?

 

[LordMorpheus]

The best I can think of would be a small piezoelectric actuator, but unless you attached something ... like a piece of cardboard ... it's not going to move enough air to really be heard, as is pointed out above.

edit: Also, piezoelectrics have none of the advantages over traditional speakers that LED's have over incandescents. They suck lots of power and have awful efficiency.

edit: They also require very high voltages. You won't see them integrated on any electronics to replace coil speakers.

 

[DrPizza]

search on youtube for videos of singing tesla coils.

No speakers! All electricity making that sound.

 

[Aluvus]

I have made sound-emitting diodes before, but they could only play one note ("pop!") and they could only play it the one time.

 

[SagaLore]

Originally posted by: ViviTheMage

Originally posted by: SagaLore

Originally posted by: MichaelD
To create sound, you must move air. The cardboard/membrane in a typical speaker (of any size) creates sound this way.

How would the SED create sound? What would move?

The SED would move.

but...how?

If I knew that, it would already be invented.

I'm thinking some crystal or ceramic would vibrate in relation to the frequency of the current being applied.

 

[Rubycon]

Originally posted by: DrPizza
search on youtube for videos of singing tesla coils.

No speakers! All electricity making that sound.

It's a singing arc that can produce sound. On a large scale it appears as a flame. Once I saw it controlled like a laser and super clean sound that had a sting to it like no instrument can make let alone a speaker system. The system was capable of tremendous power output levels and the shimmering effect much like the northern lights alone is enough to make the hair stand on your back knowing that it was not a natural phenomenon! Then when it "spoke". If there is a such thing as a "voice of God" that definitely would be it!

Originally posted by: SagaLore


I'm thinking some crystal or ceramic would vibrate in relation to the frequency of the current being applied.

That's piezoelectric effect and has been used for decades.

 

[spidey07]

Originally posted by: LordMorpheus
The best I can think of would be a small piezoelectric actuator, but unless you attached something ... like a piece of cardboard ... it's not going to move enough air to really be heard, as is pointed out above.

edit: Also, piezoelectrics have none of the advantages over traditional speakers that LED's have over incandescents. They suck lots of power and have awful efficiency.

edit: They also require very high voltages. You won't see them integrated on any electronics to replace coil speakers.

What the heck are you talking about?

Piezo horns have been used forever in speakers. Next you'll be saying electrostat speakers aren't used to replace cones/coil (distortion box) speakers.

 

[Rubycon]

Originally posted by: spidey07

What the heck are you talking about?

Piezo horns have been used forever in speakers. Next you'll be saying electrostat speakers aren't used to replace cones/coil (distortion box) speakers.

Actually what he described was an ES speaker!

 

[spidey07]

Originally posted by: Rubycon

Originally posted by: spidey07

What the heck are you talking about?

Piezo horns have been used forever in speakers. Next you'll be saying electrostat speakers aren't used to replace cones/coil (distortion box) speakers.

Actually what he described was an ES speaker!

I know. I was trying to make his head explode on speaker technology because the post was so full on nonsense it made my head hurt.

 

[herm0016]

he should check out the infinity EMIT tweeter, electromagnetic induction. or the infinity that used a bottle of inert gas and used plasma arc tweeters.

 

[Rubycon]

Originally posted by: spidey07


I know. I was trying to make his head explode on speaker technology.

That's easy to do. Three X3C's around his head with a K10 feeding the frenzy. :laugh:

 

[Born2bwire]

The OP should look into carbon nanotube speakers.

 

[Qacer]

Originally posted by: Born2bwire
The OP should look into carbon nanotube speakers.

Yep, I agree. I read about it a few months ago. Here is one article on it:

http://www.rdmag.com/ShowPR.as...ODLETT=D&CommonCount=0

 

[alfa147x]

http://www.instructables.com/id/Build_A_Plasma_Speaker/

 

[Colt45]

fail at physics