播放声音时的WP7 - InvalidOperationException

Question

下面是我的代码：

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using System.IO;

Stream stream = TitleContainer.OpenStream("sounds/BEEP.WAV");
SoundEffect effect = SoundEffect.FromStream(stream);
FrameworkDispatcher.Update();
effect.Play();

我得到流"SoundEffect effect =SoundEffect.FromStream( InvalidOperationException )“这行代码，有什么办法解决这个问题吗？

Answer 1

根据MSDN documentation的说法，stream指向的文件有非常具体的要求：

The Stream object must point to the head of a valid PCM wave file. Also, this wave file must be in the RIFF bitstream format.

The audio format has the following restrictions:

    Must be a PCM wave file
    Can only be mono or stereo
    Must be 8 or 16 bit
    Sample rate must be between 8,000 Hz and 48,000 Hz