設(shè)給定n 個變量1 x , 2 x ,…, n x 。將這些變量依序作底和各層冪,可得n重冪如下
n x
x x x
3
2
1
這里將上述n 重冪看作是不確定的,當(dāng)在其中加入適當(dāng)?shù)睦ㄌ柡螅拍艹蔀橐粋€確定的
n 重冪。不同的加括號方式導(dǎo)致不同的n 重冪。例如,當(dāng)n=4 時,全部4重冪有5個。
SOUNDSC(Y,...) is the same as SOUND(Y,...) except the data is
scaled so that the sound is played as loud as possible without
clipping. The mean of the data is removed.