Question

I m currently building a game in windows phone 7 using xna i m trying to get beat per minute from song that played in background song, i also not quite sure if what i want is BPM, what i want is something like pace or tempo in music, faster the pace ,faster the sprites is moving. What i m thinking right now, BPM is how much a frequency from music hits a range of defined constant, e.g 20 Mhz - 30 MHz, Feel free to correct me if i m wrong, i m not really familiar with audio thing, i have tried using VisualizationData from MediaLibrary XNA, but after some googling they said that VisualizationData doesn t work with WP7, i also had tried it and the output is 256 length float array contains 0 value,,or if i could do some fft with it,i ll give it a try Thank you...

Answer 1

和你一样,就你可以直接获得的床位而言,但you ll必须解释这一数据。如果你本人能够预制这种音乐,并用你的话题上船,那将是你的最好之子。

在XNA中,确实只有。 MediaPlayer.GetVisualizationData to work with. 没有任何东西可以预断这种事情。它像以下那样使用,并获取关于不同频率的信息。

MediaPlayer.IsVisualizationEnabled = true;
VisualizationData visData = new VisualizationData();
MediaPlayer.GetVisualizationData(visData);

因此,你如何看待这一频率,使你提出申请成为值得的吗? http://forums.create.msdn.com/forums/p/27745/171877.aspx#171877'rel=“nofollow”在评估湖论坛的“Audio Analysis”这一口号中做了大量详细的说明。基本上,你们会重新审视低频率,并在海滩上出现时试图发现。完美无缺,但希望你们会得到你批准的东西。

亲爱!

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