A sample console app using the Azure Speech SDK to get text from speech in a recording.

GetTextFromSpeech.cs

using System;
using System.Threading.Tasks;
using Microsoft.CognitiveServices.Speech;
using Microsoft.CognitiveServices.Speech.Audio;

namespace COB.SpeechAPI
{
    class Program
    {
        private static string WAV_FILEPATH = @"C:\Users\chris.obrien\Documents\Voicemeeter\Recording-_17_.wav";
        
        private static async Task getTextFromSpeech()
        {
            var speechConfig = SpeechConfig.FromSubscription("[AZURE SPEECH KEY]", "[REGION]");

            // OPTION 1: use pre-recorded WAV file..
            var audioConfig = AudioConfig.FromWavFileInput(WAV_FILEPATH);
            var recognizer = new SpeechRecognizer(speechConfig, audioConfig);

            // OPTION 2: record from microphone..
            //var recognizer = new SpeechRecognizer(speechConfig);
            //var audioConfig = AudioConfig.FromDefaultMicrophoneInput();

            var result = await recognizer.RecognizeOnceAsync();
            switch (result.Reason)
            {
                case ResultReason.RecognizedSpeech:
                    Console.WriteLine($"RECOGNIZED TEXT: '{result.Text}'");
                    break;
                case ResultReason.NoMatch:
                    Console.WriteLine($"NOMATCH: Speech could not be recognized.");
                    break;
                case ResultReason.Canceled:
                    var cancellation = CancellationDetails.FromResult(result);
                    Console.WriteLine($"CANCELED: Reason={cancellation.Reason}");

                    if (cancellation.Reason == CancellationReason.Error)
                    {
                        Console.WriteLine($"CANCELED: ErrorCode={cancellation.ErrorCode}");
                        Console.WriteLine($"CANCELED: ErrorDetails={cancellation.ErrorDetails}");
                        Console.WriteLine($"CANCELED: Did you update the subscription info?");
                    }
                    break;
            }
        }

        static void Main(string[] args)
        {
            getTextFromSpeech().Wait();

            Console.ReadLine();
        }
    }
}