11 Apr
2014
11 Apr
'14
8:23 a.m.
On 11.04.2014, at 03:07, Alexandre Torres Porres wrote:
hey, the code I sent only calculates the coeficients, but I left out an important part which is
t_sample output = *in++ + coef1 * last + coef2 * prev;
*out++ = gain * output; prev = last; last = output;This shows how the filter is done with those coefficients
It's easy to implement this with [fexpr~], it goes something like:
[fexpr~ $x + (coef1 * $x1[-1]) + (coef2 * $x1[-2])]
"last" and "prev" are the last two _output_ samples. i don't know fexpr~ very well, but it looks like you try to access the last _input_ samples. vb