Adding a simple Peak led and Vu meter

Discussion in 'The Projects Forum' started by Precious Molina, Sep 11, 2015.

  1. Precious Molina

    Thread Starter New Member

    Sep 6, 2015
    23
    0
    if i tap a peak lead and vu meter to my main output(soundcard)
    Will my audio degrade?
    or should i put something
    [​IMG]
     
  2. blocco a spirale

    AAC Fanatic!

    Jun 18, 2008
    1,440
    368
    The Peak LED circuit may have a detrimental effect (non-linear diode and cap to 0V) so take its input from the the output of OP2 to avoid loading the output to the soundcard.
     
    Precious Molina likes this.
  3. ScottWang

    Moderator

    Aug 23, 2012
    4,855
    767
    You can using the comparator as LM393 to setup the voltage to do the voltage comparator that you want to detect, and you can also using ne555 to do the monostable circuit to keeping the peak state with led to show the state how long you like, or you want to have a led fade out effect.
     
    cmartinez likes this.
  4. cmartinez

    AAC Fanatic!

    Jan 17, 2007
    3,574
    2,549
    I agree with Scott, a comparator is the way to go, since it usually has a high impedance input.
     
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