libzita-convolver-dev 3.1.0-7 (armhf binary) in ubuntu bionic

 Zita convolver is a C++ library implementing a real-time
 convolution matrix for up to 64 inputs and outputs. It
 uses multiple partition sizes to provide both low delay
 and efficient CPU use.
 .
 This package contains the headers used to build applications
 that use libzita-convolver.