EMIC 2 Speech Synthesizer class for Arduino

synthesizer.h

/**
* @file   synthesizer.h
* @brief  Speech Synthesizer class.
* @author David Such
*/

#ifndef synthesizer_h
#define synthesizer_h

class Synthesizer
{
  public:
    Synthesizer(byte rxPin, byte txPin): _emicSerial(rxPin, txPin)
    {
      _rxPin = rxPin;
      _txPin = txPin;
    }

    void begin()
    {
      pinMode(_rxPin, INPUT);
      pinMode(_txPin, OUTPUT);

      _emicSerial.begin(9600);
      _emicSerial.print('\n');              // Send a CR in case the system is already up
      while (_emicSerial.read() != ':');    // When the Emic 2 has initialized and is ready, it will send a single ':' character, so wait here until we receive it
      delay(10);                            // Short delay
      _emicSerial.flush();                  // Flush the receive buffer
      _emicSerial.print("N8\n");            // Select Voice (0 to 8)
      _emicSerial.print("V15\n");           // Set Volume (-48 to 18)
      _emicSerial.print("L0\n");            // Set Language (0 to 2)
      _emicSerial.print("P1\n");            // Select Parser (0 DECtalk, 1 Epson)
      _emicSerial.print("W200\n");          // Set Speaking Rate (75 to 600)
    }

    void speakMessage(String msg)
    {
      _emicSerial.print('\n');
      while (_emicSerial.read() != ':');

      _emicSerial.print('S');
      _emicSerial.print(msg);
      _emicSerial.print('\n');
    }

    void singSong()
    {
      _emicSerial.print("P0\n");
      speakMessage("[:phone arpa speak on][:rate 190][:n2][:dv ap 200 sm 100 ri 100][R EY<200,17>N<100>DRAO<200,24>PS<100>AO<200>N<100>ROW<300,19>ZIX<200,17>Z<100>AE<150>N<100>D<50>WIH<300,12>SKRR<200,17>Z<100>AO<200>N<100>KIH<300,19>TAH<150,17>N<100>Z<50>_<300>BRAY<200>T<100>KAO<300,24>PRR<300>K EH<300,19>TEL<200,17>Z<100>AE<150>N<100>D<50>War<200,12>M<100>WUH<300,17>LL EH<200>N<100>MIH<300,19>TAH<150,17>N<100>Z<50>_<300>BRAW<200>N<100>PEY<300,24>PRR<300,22>PAE<300,17>KIH<300,19>JHIX<200,15>Z<100>TAY<200>D<100>AH<200,22>P<100>WIH<200,20>TH<100>STRIH<300,13>NX<200>Z<100>_<300>DHIY<200,12>Z<100>AR<300,13>AX<300,15>FYU<300,17>AH<200,18>V<100>MAY<300,20>FEY<300,22>VRR<300,24>EH<200,22>T<100>THIH<500,16>NX<300>Z<100>][:n0]");
      _emicSerial.print("P1\n");
    }

  private:
    byte _rxPin, _txPin;
    SoftwareSerial _emicSerial;
};

#endif