Full Negative-Going Waveform From Sound Card

David King · 2014-07-11T22:28:33+00:00

I understand the output from PC sound cards swings positive and negative (push-pull) with respect to the audio ground. My objective is to create a complex audio signal in a graphical editor, such as CoolEdit or Adobe Audition, which provides an adjustable DC offset. I would then adjust the wave on the PC screen to fall entirely below the DC line. My question is, will the above method result in a signal that is wholely negative in voltage with respect to the ground terminal of the stereo output of the card? I would like to be sure before we purchase the software. David King

Jul 11, 2014 21 Replies

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David King 12 years ago

Thanks to everyone for their advice. I must be old enough to remember when cards were not AC coupled, or at least some.

For now, I will opt for the battery solution since this is only an experiment.

David King

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jurb6006 12 years ago

experiment. "

Make sure you hav a return to fground or maybe a speaker hooked or all that will happen is the battery will charge the coupling cap and you'll be back where you started.

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