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Monday, October 17, 2011

PC / Laptop to MP3

I rustled up this simple electronic circuit “of necessity”. It takes audio straight off the Internet, and puts it on a digital recorder. There are various advantages to this, not least that one can pull the audio off any computer without having to have this or that software in place first. Note that this is a digital-to-analog-to-digital conversion, so the sound will only be as good as one's computer's / recorder's analog circuits.

After wiring up the circuit, set your digital recorder's sensitivity to Lo or Dictation mode. Turn potentiometers VR1 and VR2 back about three-quarters, to avoid overload of the recorder (you might prefer a dual potentiometer here). Turn your computer volume up to about three-quarters, both to minimise hiss and avoid amplifier distortion.

Stereo Jack Plug A goes into your computer's headphone output, and stereo Jack Plug B goes into your digital recorder's microphone input. You will probably require 3 mm jack plugs at both ends. Further adjust VR1/VR2 as required for optimal recording. Happy listening!

You may re-publish this design, on condition that you acknowledge the designer (Thomas Scarborough) and this blog (

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