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Feedback Metronome

Discussion in 'Recording' started by manxon, Jul 5, 2009.

  1. manxon

    manxon Guest

    Hi all, this is my first post in the community. Hope you are ok guys.

    Here is my problem. Im trying to use my laptop to make some recording using Audacity. To keep the beat for my songs I'm using the default click track funcitonality (basically a metronome) and I start to record my guitar using the microphone port and the headphones. Once Im done, I play back what I have recorded muting the Click track and the metronome's beats are in my song... Here is what I have tried:

    1. Disable integrated laptop mic and just enable the external one
    2. Start to record without any mic connected. When I do this and play back what the system record, the metronome beat appears in low volume. That's why it can be a feedback problem.
    3. Make sure that integrated laptop mic is off.

    I'm thiking this is a problem with feed back and electronic earth on laptops... can you please give me some advice or any circuit to avoid this? :(


    Thanks a lot
     
  2. Guitarfreak

    Guitarfreak Well-Known Member

    First of all welcome to the forums at RO! woo! :cool:

    I have this same problem occasionally. If your headphones have an inline transformer (volume attenuator in the middle of the cable length) keep it away from your guitar's pickups.
     
  3. manxon

    manxon Guest

    Hi Guitarfreak,

    Thanks for your welcome message. Yes, my headphones actually have inline transformer and I will keep it away from the guitar pickups. I have a second problem. When I try to record without conecting anything to the mic input the metronome feedback stills in the track, that is:

    1. I create the click track
    2. I plug out the headphones and guitar
    3. Start to record (No sound input)
    4. Playback and metronome beat can be hear as a really low sound

    Do you think it has something to do with the hardware in the computer (or at least this is my hypotesis) do you have any suggestions about this please :?

    Thanks a lot
     
  4. Guitarfreak

    Guitarfreak Well-Known Member

    My hypothesis is that your mic is plugged into the computer's soundcard, the same soundcard that is generating the metronome click. And as the soundcard creates the click it also creates a ghost click in the other track. It is probably the result of the soundcard not being able to route/process the information properly. That is my best guess.

    Hey, just out of curiosity, what kind of mic do you have there?
     
  5. Codemonkey

    Codemonkey Well-Known Member

    It's called crosstalk - when your output/input start to leak into each other.

    It's also possible that you'll want to check the Windows mixer. Go to the RECORDING view, make sure it's set to the mic input (if you're using the soundcard). You could also check the Playback view - if the mic input is turned up loud there (to come back out your speakers) then that could be the crosstalk problem fixed. But then you can't hear yourself...hmm.

    The wonders of onboard sound ;) a simple USB interface could fix most of this but is the first step on a costly ladder.
     
  6. Guitarfreak

    Guitarfreak Well-Known Member

    Ain't it the truth 8) Hmm, crosstalk, I'll have to remember that one.
     
  7. manxon

    manxon Guest

    Thanks a lot CodeMonkey

    Now I can search in the web if there is a circuit to avoid crosstalk when recording maybe is an electric earth issue. I will also try your suggestions on Windows mixer and let you know. Thanks a lot :D

    I'll be in touch and write the results to the forum

    Manxon
     
  8. TheJackAttack

    TheJackAttack Distinguished Member

    The issue is that your onboard sound card is not really capable of balanced audio interaction-ie RFI rejection. That is why the crosstalk occurs in the first place.
     
  9. manxon

    manxon Guest

    Hi TheJackAttack,

    Thanks for your feed back :cool: . So which are my posibilities?

    Manxon
     
  10. TheJackAttack

    TheJackAttack Distinguished Member

    If it were me, I would buy an external interface to plug the microphone and/or guitar into. There are many two channel versions available. My current favorite is the Konnekt 24D but there are many options from M-Audio, Presonus, Tapco, etc.
     
  11. manxon

    manxon Guest

    Little Overkill Options

    Hi TheJackAttack,

    I checked external interface Konnekt 24D but it is a little overkill option for me, I'm really newbie. Do you have some advise for a starter external interface?

    Thanks a lot :lol:
     
  12. Guitarfreak

    Guitarfreak Well-Known Member

    Hate to break your heart, but that is a starter interface LOL :D Here is a cheap one, and by cheap I mean cheap. You won't have that metronome click anymore, but your tracks won't sound much better either...

    link removed
     

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