Thread: Simple, Small, Audio Mixer? Anyone?

Im also looking for a crossfader but a software solutions.

Im going to connect the mobile phone on the "AUDIO IN" of the computer. The software can then autofade the mobile phone and the MP3 output.

The software should aslo be able to crossfade "by software" meaning it will cross fade when the voice navigations comes on while MP3 is being played although both uses wave device.

Of course this automatic crossfade software will run as a background task.

Im sure its a cool idea for carputer...any one can code this?

The hardware solution you want is normally available as an electronic projects...I use to see them around...Ill let you know when I find one.

I am doing almost the exact same thing in my carputer I'm currently installling. The only difference is that I also am running the XM into the computer so that I can do buffered recording of the XM with Total Recorder to MP3 (yes I know it is against their user agreement), but it is generally so I can have a sample of a song that doesn't happen to have the artist/title displayed.

Here is the general layout. The GLI is pretty much a must have item if you are powering XM from the cigarette lighter adapter. But it does get rid of ALL the noise.

Code:

XM Radio - - - - - - - - Computer
 -----                    -----
     |                     |
      \                   /
         \             /
           [[NewQ DAP]]
                 |
    [[Ground Loop Isolator]]
                 |
      [[Head Unit AUX In]]
                 |
                ...

The NewQ DAP is normally used to toggle between your headphones and speakers on a PC it also extends your Mic line so you can easily hook up your headphones with built in Mics. I am using the Mic part to run the second XM signal back to the computer. I am running the little unit backwards, swapping outputs for inputs. I know that it isn't a real car audio component, But it is working fine for me and it was about $17 or so. The othe option I was looking at was using a real DJ style crossfade but it was just too big and expensive in comparrison. Also having the DAP's exposed headphone jacks lets me plug in different inputs or headphones temporarily.
Good Luck.

NewQ

Just ordered one, Moose. What is the GLI for, though? I have my XM wired in to an ignition power (not the actual cigarette lighter)... It sounds fine, is the DAP going to make any difference? Thanks for your guidance.

If you don't have any noise then you are fine without the GLI. At xmfan.com forums everyone that uses the cigarette lighter adapter has found that the GLI is the best way to clean up the interference from the adapter.
I am not a real car electronics expert, but what DC voltages are standard in most cars? Is 6V pretty standard or did you bring it down from a higher voltage?