how to compare multiple signal with PIC18F2455

Discussion in 'Embedded Systems and Microcontrollers' started by angelita, May 29, 2010.

  1. angelita

    Thread Starter Member

    May 29, 2009
    25
    0
    how to compare multiple human sound from different microphones
    to take the strongest signal (higer voltage)
    with
    PIC18F2455

    if i use 7 channels
    but the comparator is just two input
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    You can use an external multiplexer IC or use the analog inputs of the PIC (if they are enough) and make the comparison in software.
     
  3. angelita

    Thread Starter Member

    May 29, 2009
    25
    0


    is there any recommended software??

    what about the delay ? causes a problem right
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
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    282
  5. angelita

    Thread Starter Member

    May 29, 2009
    25
    0
    its a silly question i know ..but how to use ADC to search highest voltage
     
  6. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    By software I mean the program (code) the PIC is running. You can use any compiler/programmer you have to program the PIC.
     
  7. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    You convert the voltages from the peak detectors on a continuous basis. The conversion with the highest value is from the channel with the loudest input.
     
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