https://github.com/irh/freeverb-rs https://www.youtube.com/watch?t=3150&v=-F7whGjquHI&feature=youtu.be https://synthesize.rs/
Slope: (x)^(2^slope) \ 2^{\frac{1}{n}\log\left(x\right)}
https://github.com/flamegraph-rs/flamegraph cargo flamegraph --bin=demoapp