用于查找局部最大值的 AC 库？
我正在尝试编写一个音频分析应用程序，我需要识别代表频谱图的二维数组中的局部最大值。 我已经有了一个开源库，可以使用快速傅里叶变换生成频谱图，但我想知道是否有人知道任何好的库可以帮助我实际找到最大值？ 我不太确定要在谷歌上搜索什么——我能想到的最好的就是“数字图书馆”，但这并没有让我走得太远。
最好是用 C 语言，但我愿意接受其他建议。
I'm trying to write an audio analysis application, and I need to identify local maxima in a 2D array which represents a spectrogram. I've already got an open source library that can generate the spectrogram using Fast Fourier Transforms, but I was wondering if anybody knew of any good libraries to help me with actually finding the maxima? I'm not quite sure what to search Google for - the best I could think of was "numerical library" but that hasn't got me very far.
Preferably in C, but I'm open to other suggestions.
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寻峰是一个相当普遍的问题。 它已经在 SO 上讨论过一次，称为测量信号的峰值检测。
提供的答案包括几个可行的启发法。
当然，如果您需要严格性，我更喜欢我自己的答案，但ROOT是用 C++ 编写，几乎肯定对您的应用程序来说太重了，因此您需要删除您想要的代码...
Peak finding is a fairly general problem. It has already been discussed once on SO as Peak detection of measured signal.
The answers provided include several viable heuristics.
Of course, I prefer my own answer if you need rigor, but ROOT is written in c++, and is almost certainly too heavy for your application, so you'll need to strip out just the code you want...
GNU 科学图书馆具有一个多维最小化框架，可以很容易地实现最大化。 然而，它的设计目的只是返回一个最小值，而不是一堆不同的最小值。
The GNU Scientific Library features a multidimensional minimization framework that can be made to work for maximization easily enough. It's designed to only return a single minimum rather than a bunch of different minima, however.