使用iphone sdk检测心跳峰值功率?
我想使用 iphone sdk 检测心率有人知道计算心率的方法吗?
i want to detect heart rate using iphone sdk does someone knows any method for calculating heartbeat rate?
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快速傅里叶变换是一类算法,可以快速将样本转化为分析结果,告诉您该样本中某些特定频率的出现程度。有关更多信息,请查看:
这与您的问题相关,因为:(1)心率本身就是一种频率,并且(2 )您可以测量的大部分通过身体发出的声音都在一定的频率范围内。降低该范围之外的频率意味着降低全部或大部分噪声。
祝你好运!
Fast Fourier Transform is a class of algorithms that can quickly turn samples into an analysis that tells you how prominently ceratin frequencies occur in that sample. For more check out:
This is relevant to your problem because: (1) heart rate is itself a frequency, and (2) most of the sound that comes through the body that you can measure will be within a certain frequency range. Dropping frequencies outside this range means dropping all or mostly noise.
Good luck!
嗯,我见过各种实现。其中一些使用加速度计来检测您握住手机时手臂/手的微小运动,其中一些可以使用麦克风,您还可以执行手动“点击”界面,在检查自己的脉搏的同时点击屏幕。
Well I've seen various implementations. Some of them use the accelerometer to detect minute movements in your arm/hand when you hold the phone, some of them can use the microphone, you could also do a manual 'tap' interface where you tap the screen while checking your own pulse.