Function coeffFromMs

src/core/ClientComp.cpp:24–29

Classic time-constant coefficient: y += α·(target - y) with α = 1 - exp(-1 / (fs · τ)). Hits ≈63 % of the step in τ seconds.

// Classic time-constant coefficient: y += α·(target - y) with
// α = 1 - exp(-1 / (fs · τ)).  Hits ≈63 % of the step in τ seconds.
float coeffFromMs(float ms, double sampleRate) noexcept
{
    if (ms <= 0.0f) return 1.0f;
    const float tau = ms * 0.001f;
    return 1.0f - std::exp(-1.0f / static_cast<float>(sampleRate * tau));
}

} // namespace