如何检测iphone中特定声音的声音频率？ [英] How to detect sound frequency for particular sound in iphone?

问题描述

我正在做一个我想检测声音频率的应用。如何检测狗声等特定声音的频率？有没有人有教程或一些示例代码？

I'm doing an app where I want to detect sound frequency. How to detect frequency for particular sound like dog sound? Does anybody have tutorial or some sample codes?

推荐答案

检测单个频率，甚至计算单个FFT，都不可靠区分狗吠与大约相同体积的其他常见声音的方法。

Detecting a single frequency, or even computing a single FFT, is not a reliable method for differentiating a dog bark from other common sounds of around the same volume.

可能有效的方法是使用MFCC进行声音指纹分析，然后进行足够大的统计模式匹配狗声音数据库。有关所需信号处理类型的一些指示可在此处解答：音乐识别和信号处理

What might work is sound fingerprint analysis using MFCC's, followed by statistical pattern matching against a large enough "dog" sound database. Some pointers to the type of signal processing required might be answered here: Music Recognition and Signal Processing

这比任何简短教程更适合多个大学教科书章节。

This is non-trivial stuff more suited for multiple college textbook chapters than any short tutorial.

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