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| Signal Generator Question http://luthiersforum.com/forum/viewtopic.php?f=10101&t=30571 |
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| Author: | Steve Davis [ Mon Jan 03, 2011 12:46 pm ] |
| Post subject: | Signal Generator Question |
Can one use a software sig gen and computer to do Chladni work ? |
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| Author: | mhammond [ Mon Jan 03, 2011 2:26 pm ] |
| Post subject: | Re: Signal Generator Question |
You need an amplifier with 15-20 Watts to drive the speaker, I use my laptop to drive an old stereo amp. A typical sound card doesn't have enough grunt..... Mikey |
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| Author: | Pat Foster [ Mon Jan 03, 2011 2:44 pm ] |
| Post subject: | Re: Signal Generator Question |
What Mikey said. There's a lot of free signal generator SW out there, for Windows and Macs. The ones I've fed into an oscilloscope all gave accurate enough waveforms. Pat |
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| Author: | arie [ Mon Jan 03, 2011 3:26 pm ] |
| Post subject: | Re: Signal Generator Question |
radio shack used to sell a turntable pre-amp pretty cheap. they might still. |
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| Author: | Andy Birko [ Mon Jan 03, 2011 5:11 pm ] |
| Post subject: | Re: Signal Generator Question |
arie wrote: radio shack used to sell a turntable pre-amp pretty cheap. they might still. For this application, you need a power amp, not a pre-amp. Signal coming out of a PC is line level or headphone. Now you need the 10 to 20w to drive the top. |
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| Author: | TomDl [ Tue Jan 04, 2011 5:15 am ] |
| Post subject: | Re: Signal Generator Question |
My computer store has speaker sets/ipod speaker, that have a lot of drive, don't know if that would be enough. |
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| Author: | Alan Carruth [ Tue Jan 04, 2011 2:49 pm ] |
| Post subject: | Re: Signal Generator Question |
Find the wattage rating. As has been said, you'll need something like 12W out of one channel, and more is nice. |
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