I made a plug-in, but it makes weird noise

[zsliu98]

juce::dsp::IIR::Coefficients<float>::makePeakFilter

AFAIK the above function is not real-time safe. Use juce::dsp::IIR::ArrayCoefficients<float> instead.

Non-allocating alternatives for the IIR::Coefficients::make... functions

Mhm, while these are interesting options for containers like AudioBuffer, Strings or all the Array classes, I’m not sure if this would be such a trivial solution to this problem, at least not from the viewpoint of every JUCE user. Not all of them are pro level C++ programers, if you come from a more DSP background reading something like std::pmr::polymorphic_allocator could maybe not seem like a trivial soultion to your problem What I think of would be something like adding a construct…

BTW, you may also upload your header file so that we will make fewer guesses.