|
看到root mean square感觉熟悉又陌生,赶紧借此机会查一下,谢谢donot老师
The root mean square (abbreviated RMS or rms 平均平方数), also known as the quadratic mean, in statistics is a statistical measure defined as the square root of the mean of the squares of a sample
给一堆数,比如 {a,b,c,d}
rms = sqrt[1/4 * (a^2 + b^2 + c^2 + d^2)
|
|