将 Speech.Synthesizer 发送到特定设备 [英] Send Speech.Synthesizer to a specific Device

问题描述

我正在使用 Microsoft Speech Synthesis 并希望将输出重定向到我选择的输出音频设备.

I'm using Microsoft Speech Synthesis and want to redirect the output to the output audio device of my choosing.

到目前为止，我有以下代码:

So far I have the following code:

SpeechSynthesizer speechSynthesizer = new SpeechSynthesizer();
speechSynthesizer.SpeakAsync("Yea it works!");

目前我正在使用:

speechSynthesizer.SetOutputToDefaultAudioDevice();

但我实际上想将它发送到我选择的设备.我正在寻找一个 cscore 示例，以了解如何指导我选择的输出设备.我看到我可以使用:

but I actually want to send it to the device of my choosing. I am looking for a cscore example for how to direct the output device of my choice. I see that I can use:

speechSynthesizer.SetOutputToWaveStream();

这需要一个流"，但我不知道如何提供它.

This takes a "Stream", but I don't know how to feed it that.

谢谢.

推荐答案

您可以创建一个 MemoryStream 并将其附加到 CSCore 的 WaveOut 类.WaveOut 需要一个 IWaveSource 参数，因此您可以使用 CSCore 的 MediaFoundationDecoder 将波形流从SpeechSynthesizer.我做了一个小控制台应用程序来说明:

You can create a MemoryStream and attach it to CSCore's WaveOut class. WaveOut requires an IWaveSource argument, so you can use CSCore's MediaFoundationDecoder to convert the wave stream from SpeechSynthesizer. I made a little console application to illustrate:

using System;
using System.IO;
using System.Speech.Synthesis;
using CSCore;
using CSCore.MediaFoundation;
using CSCore.SoundOut;

namespace WaveOutTest
{
    class Program
    {
        static void Main()
        {
            using (var stream = new MemoryStream())
            using (var speechEngine = new SpeechSynthesizer())
            {
                Console.WriteLine("Available devices:");
                foreach (var device in WaveOutDevice.EnumerateDevices())
                {
                    Console.WriteLine("{0}: {1}", device.DeviceId, device.Name);
                }
                Console.WriteLine("\nEnter device for speech output:");
                var deviceId = (int)char.GetNumericValue(Console.ReadKey().KeyChar);

                speechEngine.SetOutputToWaveStream(stream);
                speechEngine.Speak("Testing 1 2 3");

                using (var waveOut = new WaveOut { Device = new WaveOutDevice(deviceId) })
                using (var waveSource = new MediaFoundationDecoder(stream))
                {
                    waveOut.Initialize(waveSource);
                    waveOut.Play();
                    waveOut.WaitForStopped();
                }
            }
        }
    }
}

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