mike

mike.raw
  The usual output of a mike, ie, one sample voltage at that moment.
    do.atFrequency(20000) : mike.raw -> speaker.playRaw
  This copies mike to speaker at 20,000 samples per second.

mike.wheneverWordIsSpoken("open-sesame") -> lock.open
  This uses word recognition software in the mike's Z-chip

mike.learnWord("abracadabra")
  Issue this command then say the word a few times.

mike.learnSound("mom's car")

  Place a (battery-powered radio-linked) mike on your driveway.
  Issue this command just before mom drives up.

mike.wheneverSoundOccurs("mom's car") -> garageDoor.open -> phone.text 312-555-9873 "Mom is here!"

mike.volume(0.5)
  outputs average sound level over last 0.5 seconds.

  define mike.whenVolumeUnder(v,d) : mike.volume(d) -> math.ifGreaterThan(v) -> do.stop

  Washing machines make noise when operating.
  If quiet (under 20 db) for 10 seconds, the wash is done.
  Place a mike near your washing machine and do:

    mike.whenVolumeUnder(20 db, 10 sec) -> phone.text(3125559873,"The wash is done!")

mike.spectrum(0.2,20000,10)

  Computes spectrum of next 0.2 seconds of sound, sampled at 20K samples/second,
  in 10 bands. Output is 10 numbers. Example use:

    do.every(0.2 sec) : mike.spectrum(0.2,20000,10) -> display.barGraph(10)

  This creates a spectrum analyzer display as a bar graph auto-sized for 10 bars.