File content as of revision 6:23c3adb0470d:

// THIS IS ACTUALLY A .cs FILE! Mbed only supports .c and .cpp files in repositories

using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Speech.Recognition;
using System.Speech.Recognition.SrgsGrammar;
using System.Collections.Generic;
using System.Timers;
using System.Speech.Synthesis;
using System.Speech.AudioFormat;

namespace SpeechServer
{
    class Program
    {
        static Timer timeout;
        static bool responseSent;
        static TcpClient client;
        static SpeechSynthesizer synth;

        static void Main(string[] args)
        {
            timeout = new Timer(2000);
            timeout.AutoReset = false;
            timeout.Elapsed += OnSpeechRecognitionFailed;
            responseSent = false;

            Grammar g = new Grammar(new SrgsDocument("grammar.xml"));

            // Recognizing Speech
            SpeechRecognitionEngine recognizer = new SpeechRecognitionEngine();
            recognizer.LoadGrammarAsync(g);
            recognizer.SpeechRecognized +=
                new EventHandler<SpeechRecognizedEventArgs>(recognizer_SpeechRecognized);
            recognizer.SpeechRecognitionRejected +=
                new EventHandler<SpeechRecognitionRejectedEventArgs>(recognizer_SpeechRecognitionRejected);
            // Synthesizing Speech
            synth = new SpeechSynthesizer();
            synth.SpeakCompleted += new EventHandler<SpeakCompletedEventArgs>(synth_SpeakCompleted);
            
            TcpListener server = null;
            try {
                Int32 port = 13000;
                //Console.WriteLine("What IP Address?");
                //String ip = Console.ReadLine();
                //IPAddress hostaddr = IPAddress.Parse(ip);
                IPHostEntry host = Dns.GetHostEntry("laptop-pc");
                IPAddress hostaddr = null;
                foreach (IPAddress ipaddr in host.AddressList) {
                    if (ipaddr.AddressFamily == AddressFamily.InterNetwork)
                    {
                        hostaddr = ipaddr;
                    }
                }
                Console.WriteLine("Listening on Address: {0}", hostaddr.ToString());

                server = new TcpListener(hostaddr, port);
                server.Start();

                Byte[] bytes = new Byte[1024];

                while (true)
                {
                    Console.Write("Waiting for a connection...");
                    client = server.AcceptTcpClient();
                    Console.WriteLine("Connected!");
                    recognizer.SetInputToNull();

                    NetworkStream stream = client.GetStream();
                    int i;

                    using (FileStream fs = File.Open("test.wav", FileMode.Create, FileAccess.Write, FileShare.None))
                    {
                        int sum = 0;
                        while (sum < 110296)
                        {
                            i = stream.Read(bytes, 0, bytes.Length);
                            sum += i;
                            fs.Write(bytes, 0, i);
                        }
                    }

                    recognizer.SetInputToWaveFile("test.wav");
                    recognizer.RecognizeAsync(RecognizeMode.Single);
                    timeout.Start();

                    while (!responseSent)
                    {
                        System.Threading.Thread.Sleep(100);
                    }
                    responseSent = false;
                    System.Threading.Thread.Sleep(1000);
                    client.Close();
                }
            }
            catch (SocketException e)
            {
                Console.WriteLine("SocketException: {0}", e);
            }
            finally
            {
                server.Stop();
            }
            Console.WriteLine("\nHit enter to continue...");
            Console.Read();
        }

        static void recognizer_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
        {
            timeout.Stop();
            String toSend = e.Result.Semantics["command"].Value.ToString();
            String minute = "0";
            String hour = "0";
            String period = "0";
            String timezone = "0";

            // The following code illustrates some of the information available
            // in the recognition result.
            Console.WriteLine("Recognition result summary:");
            Console.WriteLine(
              "  Recognized phrase: {0}\n" +
              "  Confidence score {1}\n" +
              "  Grammar used: {2}\n",
              e.Result.Text, e.Result.Confidence, e.Result.Grammar.Name);

            // Display the semantic values in the recognition result.
            Console.WriteLine("  Semantic results:");
            foreach (KeyValuePair<String, SemanticValue> child in e.Result.Semantics)
            {
                Console.WriteLine("    The {0} value is {1}",
                  child.Key, child.Value.Value ?? "null");
            }
            if (e.Result.Semantics.ContainsKey("time"))
            {
                Console.WriteLine("  In Time:");
                foreach (KeyValuePair<String, SemanticValue> child in e.Result.Semantics["time"])
                {
                    Console.WriteLine("    The {0} value is {1}",
                      child.Key, child.Value.Value ?? "null");
                }
                hour = e.Result.Semantics["time"]["hour"].Value.ToString();
                minute = e.Result.Semantics["time"]["minute"].Value.ToString();
                period = e.Result.Semantics["time"]["period"].Value.ToString();
            }
            else if (e.Result.Semantics.ContainsKey("length"))
            {
                Console.WriteLine("  In Length:");
                foreach (KeyValuePair<String, SemanticValue> child in e.Result.Semantics["length"])
                {
                    Console.WriteLine("    The {0} value is {1}",
                      child.Key, child.Value.Value ?? "null");
                }
                hour = e.Result.Semantics["length"]["hour"].Value.ToString();
                minute = e.Result.Semantics["length"]["minute"].Value.ToString();
            }
            else if (e.Result.Semantics.ContainsKey("zone"))
            {
                timezone = e.Result.Semantics["zone"].Value.ToString();
            }
            toSend += " " + hour + " " + minute + " " + period + " " + timezone;
            Console.WriteLine("To Send: \"{0}\"", toSend);
            Console.WriteLine();

            byte[] msg = System.Text.Encoding.ASCII.GetBytes(toSend);

            client.GetStream().Write(msg, 0, msg.Length);
            responseSent = true;
        }

        static void recognizer_SpeechRecognitionRejected(object sender, SpeechRecognitionRejectedEventArgs e)
        {
            Console.WriteLine("Speech input was rejected.");
            foreach (RecognizedPhrase phrase in e.Result.Alternates)
            {
                Console.WriteLine("  Rejected phrase: " + phrase.Text);
                Console.WriteLine("  Confidence score: " + phrase.Confidence);
            }
        }

        private static void OnSpeechRecognitionFailed(Object source, ElapsedEventArgs e)
        {
            Console.WriteLine("The Elapsed event was raised at {0}", e.SignalTime);

            byte[] msg = System.Text.Encoding.ASCII.GetBytes("noCommand 0 0 0 0");

            client.GetStream().Write(msg, 0, msg.Length);

            responseSent = true;

            //synth.SetOutputToWaveFile("response.wav", new SpeechAudioFormatInfo(11025, AudioBitsPerSample.Sixteen, AudioChannel.Mono));
            //synth.SpeakAsync("testing this");
        }

        static void synth_SpeakCompleted(object sender, SpeakCompletedEventArgs e)
        {
            synth.SetOutputToNull();
            Console.WriteLine("Speaking Complete");
        }
    }
}