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Help me transmit data through sound channel

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guesswho

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Help Needed

I need to transfer information through sound channel.I want to use speakers as the trasmitter and microphone as the receiver.But i dont want the output from the speakers in form of noise.I just want it to be transmitted.

Is this possible.


Tx in advance.
 

Kit-the-great

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Sound connection

Maybe You can use LINE-IN instead of microphone in Your soundcard ?

With responce,
Kit-the-great
 

guesswho

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Yaar nebody having ne idea if there are ne wires available that go from line out of one pc to line in of the other?

Will this solve the problem that i mentioned in the first post?
 

Kit-the-great

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As I understand, You want to make a wireless communication between two soundcards, but You don't want to use the audio speakers as transmitter, because it's noise level very high. Is this right ?
 

guesswho

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Yes u r 100% rite.The communication must be analog.it may not be wireless.
 

Kit-the-great

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I can invent only two variants:

1. Use the low-noise speaker.
2. You can use the IR-LED, which modulates by the audio out, as transmitter, and photodiode, which connected to microphone in, as receiver. (Some times ago, i read the article about the photocamera shutter diagnostics due to photodiode connected to microphone-in of ordinary soundblaster - similar situation.)

With responce,
kit-the-great
 

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