Arduino example of microphone dependent IR signal send for Samsung TV

IRSend_example.ino

/*
 * IRremote: IRsendDemo - demonstrates sending IR codes with IRsend
 * An IR LED must be connected to Arduino PWM pin 3.
 * Version 0.1 July, 2009
 * Copyright 2009 Ken Shirriff
 * http://arcfn.com
 */

#include <boarddefs.h>
#include <IRremote.h>
#include <IRremoteInt.h>
#include <ir_Lego_PF_BitStreamEncoder.h>

int ledstate = 0;
const int ledPin = 2;

IRsend irsend;

void setup()
{
  pinMode(ledPin, INPUT);
  Serial.begin(9600);
}

void loop() {
  ledstate = digitalRead(ledPin);

  // If the signal exceed trashold ledstate goes HIGH
  if(ledstate == HIGH) {
    Serial.println("CLAP");

    // In this moment send IR pulse (2x after 40 ms delay)  
    for (int i = 0; i < 2; i++) {
      irsend.sendSAMSUNG(0xe0e008f7, 32);
      delay(40);
    }
    delay(100); 
  }
}