WinXP上的峰值，VU表 [英] Peak, VU meter on WinXP

问题描述

您好！

我需要您的帮助！

我需要在Windows XP上创建峰值表（vu meter）。

我试过制作它与WASAPI，EndPointVolume等，但这些技术不支持WinXP

我试过学习DirectSound，MCI并以失败告终。

我需要用什么？我需要如何使用它？

我使用VS和C ++。



提前感谢！

Hello!
I need your help!
I need create peak meter (vu meter) on windows XP.
I tried make it with WASAPI, EndPointVolume and other, but these techonogies doesn't support WinXP
I tried learn DirectSound, MCI and it ended in failure.
What i need use? And how i need use it?
I use VS and C++.

Thank in advance!

推荐答案

DirectX（DirectSound）应该是WindowXP的一个很好的解决方案。您需要创建一个过滤器（请参阅DirectX的示例，有几个过滤器示例），然后确保使用包含过滤器的图表播放声音。



您的过滤器必须提供有关频率和强度的信息。



一些过滤器示例：

http://msdn.microsoft.com/en-us/library/windows/desktop/dd375468 （v = vs.85）.aspx [ ^ ]



请参阅范围过滤器示例，它是声音的WaveForm表示，接近你想要的。

DirectX (DirectSound) should be a good solution for WindowXP. You need to create a Filter (see the examples of DirectX, there are a couple of filter examples) and then make sure sounds are being played using a graph that includes your filter.

Your filter must then provide information about fequencies and strength.

Some filter examples :
http://msdn.microsoft.com/en-us/library/windows/desktop/dd375468(v=vs.85).aspx[^]

See the 'Scope Filter Example' which is a WaveForm representation of your sound, which comes close to what you want.

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