uns the compilation chain (Faust + wasm backend) and generates the <em>prototype</em> of the class, as an <code>wasm_dsp_factory</code> pointer. This factory actually contains the compiled wasm for the given DSP</li>
<li>alternatively the <code>createWasmDSPFactoryFromBoxes</code> allows to create the factory from a box expression built with the <a href="https://github.com/grame-cncm/faust/blob/master-dev/architecture/faust/dsp/libfaust-box.h">box API</a></li>
<li>alternatively the <code>createWasmDSPFactor