spl_meter function output vlaue difference

hi i want 1/3 octave band db

so i use spl_meter function

but I put the same value into the same function, but the value that comes out is different.

I want to know reason this sitution

Answer 1

[jibrahim]

Hi Hamin,

splMeter contains filters that remember the previous output, i.e. it has states. You should not expect the same input to give the same output. If you want to discard states (the effect of the previous input), call release first:

y = spl(x);
release(spl)
y2 = spl(x); % y and y2 are equal

Also, make sure x is a column vector, not a row vector, A 1-by-N row vector is treated as N indepedent channels of data, with one sample each.

[hamin je]

Thank you