问题描述
我使用DSPACK用Delphi 6专业版。结果
我找了一个很好的示例，演示如何创建一个过滤器图，将音频流的采样率转换为实时所需的格式（采样率，比特深度和通道数）。结果
有谁知道一个很好的例子，项目展示如何构建过滤器图表与DSPACK做到这一点的？如果不是DSPACK，然后如果你知道，讨论涉及的一般的DirectX过滤图概念一个很好的例子或网页，我可以使用它。结果
我也知道C / C ++，并可以按照C＃示例不够好。
I am using DSPACK with Delphi 6 Pro.
I am looking for a good sample that shows how to create a filter graph that will convert the sample rate of an audio stream to a desired format (sample rate, bit depth, and number of channels) in real time.
Does anyone know of a good example project that shows how to structure the filter graph with DSPACK to do this? If not with DSPACK, then if you know of a good example or web page that discusses the general DirectX filter graph concepts involved, I can use that.
I also know C/C++ and can follow a C# example well enough.
推荐答案
您需要一个重采样滤波器来做到这一点。选项包括：
You need a resampling filter to do this. Options include:
- 实现一个过滤器，它确实
- 使用一些重采样code /库，请参阅，如果你是与它的运行时间需求确定
- implement a filter which does Audio Resampling
- using some resample code/library, see Free Resampling Software
- wrapping Media Foundation Audio Resampler DSP, if you are OK with its runtime requirements
有提供此类过滤器，你将需要建立与音频源，重采样和目标的转换（如文件）转码图。
Having such filter available, you will need to build a transcoding graph with audio source, resampler and target of your conversion (such as file).
此外，据我记得，股票的能够转换标准采样率之间的PCM音频的。
Also as far as I remember, that stock ACM Wrapper Filter is capable of converting PCM audio between standard sample rates.
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