Changing Filter coefficients on the fly

[Kageni-wq]

Hey I want to change my filter coefficients without resetting the esp32. I have I2S -> low pass filtered stream -> biquad filter stream -> volume stream -> a2dp_source. My current code has a change filter function like such:

switch (esp.filter)
{
case 0:
filtered.setFilter(0, new BiQuadDF2(B_b_coefficients, B_a_coefficients));
break;
case 1:
filtered.setFilter(0, new BiQuadDF2(L_b_coefficients, L_a_coefficients));
break;
case 2:
filtered.setFilter(0, new BiQuadDF2(H_b_coefficients, H_a_coefficients));
break;
default:
break;
}

With the different filter coefficients defined prior to void set up.

But when I call this function, the audio gets really choppy and is breaking up frequently. Do I need to stop the different streams prior to changing filters?

[pschatzmann]

I am not aware of any restriction.
The only issue, that I see is that you create some memory leaks.
I suggest to create the filters as global objects that you just assign with setFilter() instead of createing a new object each time.

ps. the Equilizer3Bands is much easier to use...