Hello and welcome to our forum!

I don't know much about audition, but I recommend to study the specific manual thoroughly.
;-)
That helped me on my systems with a lot of problems...

Oh, can you show me that manual thanks

http://help.adobe.com/en_US/Audition/3.0/audition_3_help.pdf

It is almost certainly installed on your computer as well. If you need a different language you can search adobe.com yourself as well.

I've used Audition extensively and I don't understand what you're trying to accomplish. Are you trying to record a separate vocal track and it's mixing with the background music? Is your computer playing audio back through the mixer?

I was born and raised in the United States so my English isn't too good either but I'll try to explain how to correct the problem you're having.

Your problem is not with Adobe Audition. Your problem is typical with many sound cards. Many sound cards come with their own specialized dedicated mixer which also facilitates your routing & monitoring. But many rely upon a duplication of or the mixer built into Microsoft Windows of every variety of Windows. What you are not completely clear on is that the Windows mixer has a input/monitoring feature & a separate recording feature. You can think of this in similar terms as an old-fashioned "split" console design, where you had the input section that went to the recorder and a separate monitor section to monitor the recorder. Your Windows mixer for input recording is obviously set to " stereo mix" as opposed to strictly selecting " line input/auxiliary input". This tells the soundcard to only record the input source & not record your input source plus what you are listening to. What you are listening to is controlled by the first mixer window to appear. This first mixer window allows you to select what you want to listen to as opposed to what you want to record. You can actually open up both the first input source monitor mixer window and then, you can open a second instance of the same mixer window. If you have two instances of the same mixer window open, you'll notice that changing the volume level of any input source selection is mimicked & duplicated in the second mixer window. But if you open up the second instance to the " record" section, you'll have 2 different mixer windows open. One is for your monitoring source selections such as, microphone input, line input, synthesizer & stereo and/or Mono playback mix. Conversely, you'll find similar selections in the record mixer selection's. And this is where you are having problems. YOU MUST select only line input in the record section of the mixer. You'll control what you're listening to through the first opened instance of the mixer window. There you can choose to listen to only your previous tracks playback with or without also monitoring your line input. So your problem is really quite simple, quite basic.

Now all of this has nothing to do with the mixer built into Audition 3. The mixer in Audition is only to balance & mix you're already recorded tracks. But your Windows mixer still dictates how loud it will be coming out of your soundcard. Sometimes this is a difficult concept to understand is these 2 very different mixer applications interact and must be used together. But this type of operation is similar to and mimics the operation of a large frame analog audio console from the 1970s. That's pretty laughable when you think about it today. But when you realize that people still use violins, violas, cellos & double basses there is still reasons to still do things the old-fashioned way even when playing an electric guitar or electric bass. Fingerings really haven't changed in over 300 years with you are playing a violin made that long ago or guitar you bought yesterday. So you're simply experiencing simple operator error and nothing more.

I hope this clears up the problem for you? Any other questions? Remember, most simple inexpensive soundcards generally utilize the Windows mixer, whereas other soundcards have a special dedicated software mixer interface which I don't think you are using. Remember, one Windows mixer is for just selecting what you want to listen to and the secondary mixer window dictates what source is going to be recorded. The only thing to be concerned with in Audition is that when you record in the multitrack window, you are also given a selection of what soundcard & what channels of the soundcard that you want to record into Audition. So if you want to feed a guitar out of your mixer to a separate track & a vocal out of your mixer to another track, you must select that in Audition. You wouldn't necessarily want to record guitar left channel & vocal right channel as a stereo track but as 2 separate mono tracks and that must be done in Audition. I hope this is making sense?

English is not my best language but the only one I know
Mx. Remy Ann David

Cold, post: 360738 wrote: I was recording with a condenser microphone, a mixer , soundcard and laptop, everything is ok but when i try to record vocals with adobe audition 3, the background music of the song is mix with the recording vocal

Remy is probably correct. But we don't know just what you have, so it's all guessing.

Mic? Doesn't matter what it is. It's going into a mixer. We can ASSUME that the mixer is not a digital mixer with A/D conversion directly to computer...because you listed "soundcard". Can we assume an analog mixer is outputting a stereo signal to the onboard soundcard inputs of the computer? Or, do you have, perhaps a USB or FireWire recording interface that you call a soundcard? (I'm guessing it's the computer input).

If these assumptions are all correct, then Remy is likely correct. You may even have some crazy "What You Hear"-type settings in the soundcard properties that need to be dealt with.

My real point is that it is extremely helpful if you list the make and models of all your equipment you use in that instance when asking questions. It's even possible that you have your external mixer being used as mixer out to computer, computer out to mixer for monitor...and you have things routed wrong, and/or causing a loop. For instance, you record a guitar in. You play the guitar back through the mixer for monitoring, while trying to add vovals. Now, the guitar is coming back into the mixer, being mixed with vocal to record back to the computer. Could that be happening?

I dunno. We don't have enough information.

Look at your routing of everything, check your Windows soundcard properties, and see if you can eliminate the problem. If you can't, list your equipment, how it's connected, and then report back.

Good luck,

Kapt.Krunch