What would be your approach to building a modular synth in HISE? Would you rather use send effects and send containers Build your own synths, samplers, drum engines and DSP effects. HISE gives you modular Spacebar clicker audio design, a graphical interface designer, flexible scripting and ...The capacity of any modular case is measured in units called HP. It stands for “horizontal pitch.” One HP is 0.2” or 5 mm. Modules are built to exact dimensions in HP. Each module has its own HP value that can be an even or odd number. The MIDI output of the keyboard connects to the MIDI input of the modular via a MIDI cable.