将NAudio与SpeechSynthesizer结合使用
本文关键字:结合 SpeechSynthesizer NAudio | 更新日期: 2023-09-27 18:00:39
我想将NAudio与SpeechSynthesizer一起使用,但如果不先将.wav文件写入磁盘,就无法使其工作。
我不明白为什么,我尝试了RAW波形数据和带标题的波形,请参阅以下示例。。。
示例1-这很有效,但保存了一个.wav文件
using (var synth = new SpeechSynthesizer())
{
synth.SetOutputToWaveFile(@".'Test.wav");
synth.Speak("This is sample text-to-speech output.");
synth.SetOutputToNull();
var reader = new WaveFileReader(@".'Test.wav");
var waveOut = new WaveOut();
waveOut.Init(reader);
waveOut.Play();
}
示例2-这也可以,但仍然使用文件
using (var synth = new SpeechSynthesizer())
using (var stream = new MemoryStream())
{
synth.SetOutputToWaveStream(stream);
synth.Speak("This is sample text-to-speech output.");
using (var fileStream = File.Create(@".'Test.wav"))
{
stream.Seek(0, SeekOrigin.Begin);
stream.CopyTo(fileStream);
}
var reader = new WaveFileReader(@".'Test.wav");
var waveOut = new WaveOut();
waveOut.Init(reader);
waveOut.Play();
}
示例3-这不起作用,它只播放了几分之一秒就停止了
我特意使用SetOutputToWaveStream来保留RIFF标头,以避免设置波形格式。
using (var synth = new SpeechSynthesizer())
using (var stream = new MemoryStream())
{
synth.SetOutputToWaveStream(stream);
synth.Speak("This is sample text-to-speech output.");
stream.Seek(0, SeekOrigin.Begin);
var reader = new WaveFileReader(stream);
var waveOut = new WaveOut();
waveOut.Init(reader);
waveOut.Play();
}
示例4-与示例3结果相同
这使用了原始数据,而且有点庞大。
using (var synth = new SpeechSynthesizer())
using (var stream = new MemoryStream())
{
synth.SetOutputToAudioStream(stream, new SpeechAudioFormatInfo(44100, AudioBitsPerSample.Sixteen, AudioChannel.Mono));
synth.Speak("This is sample text-to-speech output.");
stream.Seek(0, SeekOrigin.Begin);
IWaveProvider provider = new RawSourceWaveStream(stream, new WaveFormat(44100, 16, 1));
var waveOut = new WaveOut();
waveOut.Init(provider);
waveOut.Play();
}
我也试过使用WasapiOut,但情况更糟。
您只需了解示例3。在重新定位到起点之前,调用内存流上的Flush
。此外,Play
只开始播放,因此您需要等待播放完成,或者将WaveOut
实例移动到using
块之外。否则,它只会在播放之前被收集垃圾。
如果可以的话(对于解决方案3),这段代码对我很有用。
IWaveProvider provider = null;
var stream = new MemoryStream();
using (var synth = new SpeechSynthesizer())
{
synth.SetOutputToAudioStream(stream,
new SpeechAudioFormatInfo(44100, AudioBitsPerSample.Sixteen, AudioChannel.Mono));
synth.Speak("This is sample text-to-speech output.");
stream.Seek(0, SeekOrigin.Begin);
provider = new RawSourceWaveStream(stream, new WaveFormat(44100, 16, 1));
}
var waveOut = new WaveOut();
waveOut.Init(provider);
waveOut.Play();