PC O-scope Hardware

[{ antonio }]

I wanted to know what Oscope hardware you might be using to run on your PC via your soundcard.  Thanks in advance for all replies.  Antonio.

[darron]

maybe you mean software?

[DWBH]

Yeah, I'd also like to know what do you need to have a oscilloscope on your PC. Just for testing lil'pedals.

[{ antonio }]

Sorry.  I should have clarified better. 

I have picked the software I am going to use (Visual Analyzer)

In the past I noticed people talking about building hardware/cables to connect to the Audio card in their PC.  The Software is automatically routed to the computers respective audio card. 

I hope that helps. Antonio.

[rikkards]

That's a good question!
I was thinking maybe make an Audio probe with a headphone jack rather than a 1/4" like the one on geofex and hook that up to your mic input?

Sorry.  I should have clarified better. 

I have picked the software I am going to use (Visual Analyzer)

In the past I noticed people talking about building hardware/cables to connect to the Audio card in their PC.  The Software is automatically routed to the computers respective audio card. 

I hope that helps. Antonio.

[mdh]

Basically what you need is an AC-coupled buffer (caps at input and output) to prevent loading of the circuit under test, and to block DC from reaching your sound card.  I built one from the schematic on the xoscope site (http://xoscope.sourceforge.net/hardware/hardware.html), and it works fine, but at the time I didn't realize that it wouldn't work for the purposes I had in mind.  I was interested in envelope followers and LFOs, and of course those sorts of things are too low-frequency to look at with a sound card.  I have also used it to look at clipping produced by distortion pedals, but I never really took the time to be sure whether I was looking at the clipping produced by the pedal, or the sound card input.  The buffer I linked above certainly is capable of over-driving my sound card input.