我在哪里可以找到关于编写音频DSP滤波器很好的教程（低通等）？ [英] Where can I find good tutorials on writing audio DSP filters (lowpass, etc)?

问题描述

我最近成为学习如何实现在AS3各种音频过滤器非常感兴趣。通过直观的猜测（和启发电容），我已经成功地创造什么似乎是一个一阶高通滤波器，但我不知道如何设置它的频率（或Q）以可控的方式。

I've recently become very interested in learning how to implement various audio filters in AS3. By intuitive guessing (and inspired by capacitors), I've managed to create what seems to be a 1st order high-pass filter, but I have no idea how to set its frequency (or Q) in a controlled way.

所以，我想了解如何编写参数第二/第四阶低通，高通，从头带通滤波器。而且我不是很mathsy。任何实际的，直接的教程或教材在那里它可以帮助呢？

So I'd like to learn how to write parametric 2nd/4th order low-pass, hi-pass, bandpass filters from scratch. And I'm not very mathsy. Any practical, straightforward tutorials or textbooks out there which could help with this?

部分信贷为可读的源$ C ​​$ C（在AS3 / C等），以代替教程......（！）

Partial credit for readable source code (in as3/c,etc), in lieu of a tutorial... (!)

编辑： 找到一个伟大的网站，www.musicdsp.org，随着真棒code段堆，主要是在C / C ++。

Found a great site, www.musicdsp.org, with heaps of awesome code snippets, mostly in c/c++.

推荐答案

你真的从MusicDSP想要的链接是<一个href="http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt">http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt

The link you really want from MusicDSP is http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt

我也建议得到里昂的了解数字信号处理的。我有点偏，不过，因为我是一个审稿第二版（但我认为第三个版本就出来了最近）。

I also recommend getting Lyon's Understanding Digital Signal Processing. I am a bit biased, though, since I was a reviewer for the second edition (but I think a third edition came out recently).

另外，请查阅的数字音频信号处理和 DAFX：数字音效的，都是由乌Zölzer

Also check out Digital Audio Signal Processing and DAFX:Digital Audio Effects, both by Udo Zölzer.

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