如何在 C# 中加速/延迟音频文件？

Question

如何提高或降低音频文件的播放速度（音调应该改变）。我应该使用什么方法和库？现在我正在尝试NAudio，但据我所知，这个库没有我需要的功能。我也试过soundtouch，但我不明白它是如何工作的。

Answer 1

也许这样的事情适用于soundtouch。

// Open the audio file
var reader = new AudioFileReader("AudioFile.mp3");

// Create a new SoundTouch instance
var soundTouch = new SoundTouch();

// Set the playback speed
soundTouch.Rate = 1.5; // Play at 1.5x speed

// Set the input of the SoundTouch instance to the audio file reader
soundTouch.SetInput(reader);

// Create a new wave out to play the audio
var waveOut = new WaveOut();

// Use the SoundTouch instance as the wave out's source
waveOut.Init(soundTouch);

// Play the audio
waveOut.Play();

或者这个NAudio。

// Open the audio file
var reader = new AudioFileReader("AudioFile.mp3");

// Change the playback speed
reader.PlaybackRate = 1.5; // Play at 1.5x speed

// Create a new wave out to play the audio
var waveOut = new WaveOut();

// Use the audio file reader as the wave out's source
waveOut.Init(reader);

// Play the audio
waveOut.Play();