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06-07-2007, 04:05 PM
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#1 (permalink)
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Lord Techie Join Date: Dec 2006 Posts: 5,007
|  pondering
what actually travels through an audio cable is it constant electrical or some form of electric modulation that is then interpretted by the speaker as to what volume and note the sound is
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06-07-2007, 04:40 PM
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#2 (permalink)
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Monster Techie Join Date: Jul 2006 Location: New Stanton, Pennsylvania Posts: 1,017
| Re: pondering
probally some constant electrical form read by it...
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06-07-2007, 05:03 PM
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#3 (permalink)
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Sound Engineer Join Date: Dec 2004 Location: Cleveland, OH Posts: 1,551
| Re: pondering
Eh... tough question. I can answer, but in really technical terms that would do you no good.
EricB is your man for this - he knows more about it than I.
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06-07-2007, 07:27 PM
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#4 (permalink)
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Monster Techie Join Date: May 2004 Location: Tucson, AZ, USA Posts: 1,183
| Re: pondering
Quote:
Originally Posted by Crysalis  I can answer, but in really technical terms that would do you no good. | Don't try to sound sophisticated. Who cares if (I/we) don't understand the exact terms - I can use Google to look them up if need be. Please, do explain, if you can. 
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06-08-2007, 12:07 AM
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#5 (permalink)
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Sound Engineer Join Date: Dec 2004 Location: Cleveland, OH Posts: 1,551
| Re: pondering
I'll try my best, but eric will have to fill in the details.
Basically, there is always some signal being produced. Whether or not you can hear it all depends on the noise floor or SNR of your equipment. If you've ever listened to a speaker, you'll hear hissing. Thats noise. Its getting noise signal from the circuits in your amplifier, or is has noisy circuitry in the speaker itself, or the crossover network. Everything has a noise floor... the more equipment thats added, the higher the noise floor, and the louder the hissing.
Anyways, as for power, the wattage/voltage isn't constant. Your volume knob is basically a resistor (or was at some point in time back in the day). The higher the knob is, the lesser there is resistance. When the knob is all the way up, thats when there is no resistance and the amp is "wide-open".
Resistances/ohms are a whole other ball game and i'm not even going to get into it. Impedence plays a big part in how a system performs (as well as how long...haha).
Wasn't trying to "sound sophisticated"... I just can't explain it very well.
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06-08-2007, 12:10 AM
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#6 (permalink)
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Retired. Join Date: Dec 2005 Location: Los Angeles, California Posts: 8,090
| Re: pondering
that doesnt explain the original question
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06-08-2007, 12:45 AM
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#7 (permalink)
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Hard Core Techie Join Date: Nov 2004 Posts: 11,642
| Re: pondering
A/C voltage. alternating current. that's the simple explanation
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06-08-2007, 12:46 AM
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#8 (permalink)
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Retired. Join Date: Dec 2005 Location: Los Angeles, California Posts: 8,090
| Re: pondering
oh...so the audio out on the back of my comp is small volt ac current?
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My computer uses 1.5A-load, .8A-idle, .65A-standby, .05A-turned off on 125V.
"The spaces between your fingers were created so that another's could fill them in."
Quote:
Originally Posted by Norcent I need to stop using the internet. | | |
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06-08-2007, 12:54 AM
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#9 (permalink)
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Hard Core Techie Join Date: Nov 2004 Posts: 11,642
| Re: pondering
no. that's dc. direct current. A/C come from the amp or receiver to the speaker
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06-08-2007, 12:55 AM
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#10 (permalink)
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Retired. Join Date: Dec 2005 Location: Los Angeles, California Posts: 8,090
| Re: pondering
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My computer uses 1.5A-load, .8A-idle, .65A-standby, .05A-turned off on 125V.
"The spaces between your fingers were created so that another's could fill them in."
Quote:
Originally Posted by Norcent I need to stop using the internet. | | |
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