wdf-bakeoff
Comparing the performance of Wave Digital Filter implementations
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Ecosystems:
C++
WDF Bakeoff
Comparing performance between Wave Digital Filters implemented in C++ and Faust.
Building
First clone the repository and submodules:
git clone https://github.com/jatinchowdhury18/wdf-bakeoff
cd wdf-bakeoff
git submodule update --init --recursive
Next, build with CMake:
cmake -Bbuild
cmake --build build --config Release
Finally, run the tool:
./build/wdf-bakeoff --help
Results
The table below shows the time taken to process 100 seconds of
audio at 192 kHz sample rate, as well as the "real-time" ratio
(seconds of audio per second of processing time). The C++
columns are for the C++ implementation using tempaltes,
while the C++ poly measurements are for the C++
implementation with run-time polymorphism.
| Circuit | Faust (time) | Faust (ratio) | C++ (time) | C++ (ratio) | C++ poly (time) | C++ poly (ratio) |
|---|---|---|---|---|---|---|
| LPF | 0.47 | 211.5 | 0.21 | 470.7 | 0.81 | 123.3 |
| FF2 | 1.05 | 94.9 | 1.56 | 64.3 | 3.07 | 32.6 |
| Diode Clipper | 3.60 | 27.8 | 0.47 | 214.2 | 0.62 | 160.7 |