在Matlab中集成信号 [英] integration of signal in matlab

问题描述

我如何在malab中积分信号以找到该信号曲线下方的区域

how can i integrate the signal to find the area under the curve of this signal in malab

推荐答案

Matlab提供了出色的帮助支持.您可以在Matlab帮助部分中找到有关示例的几乎所有功能.

为什么不尝试呢?

对于您的特定问题，您可以使用两种不同的方法来解决.

* CUMSUM
* TRAPZ (梯形积分)

使用 CUMSUM :
根据对信号进行采样的域，可以执行以下方法之一. (假设信号为Y)
-在频域中:
integralOfY = CUMSUM (Y) / f (其中f:采样频率)

-时域:
integralOfY = CUMSUM (Y) . * [ 1; diff(t)] (其中t:采样的时间间隔)

使用 TRAPZ :

- Z = TRAPZ ( Y ) :Y的积分
- Z = TRAPZ ( X, Y) :Y wrt X的积分


BR//
Harsha

Matlab has an amazing help support. You can find almost all the functionalities with an example in Matlab help section.

Why don''t you try them ?

For This particular question of yours, you can Do it using two different methods.

* CUMSUM
* TRAPZ ( Trapezoidal Integral )

Using CUMSUM :
Depending on what Domain your signal is sampled you can do one of the following methods. ( Assuming the Signal yo be Y )
-- In Frequency Domain :
integralOfY = CUMSUM (Y) / f ( where f : sampled frequency )

-- In Time Domain :
integralOfY = CUMSUM (Y) . * [ 1; diff(t)] ( where t : sampled time interval )

Using TRAPZ :

-- Z = TRAPZ ( Y ) : Integral of Y
-- Z = TRAPZ ( X, Y) : Integral of Y wrt X


BR//
Harsha

您的信号格式是什么?如果其已被数字化，则将其视为二进制数据.

what''s your signal format? if its already digitized, it''s just treated as binary data.

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