The Language¶
- Purely functional language
- Faust compiler transpiles to C++ code
- Built-in UI widgets
- No run-time libraries required!
- Block-diagram syntax
- Intrinisically signal-based:
- Digital signals - discrete time functions
- Signal processor - Operate functions on signals (2nd order)
- Composition operators - Ties processors together (3rd order)
Signal Processor Examples¶
Generates silence:
process = 0;
Passes input signal to output, a cable:
process = _;
Downmixes stereo signal to mono:
process = +;
Processor Composition¶
We combine discrete processors using the following operators:
| Oper | Operator Function |
|---|---|
| f~g | Recursive composition |
| f,g | Parallel composition |
| f:g | Sequential composition |
| f<:g | Split composition |
| f:>g | Merge composition |
Similar to our second example in the section above, a stereo cable:
process = _,_;
Resursion used to create a one sample delay:
//Y(t) = X(t) + Y(t−1)
process = + ~ _;