Function require

tests/unittests/test_audio_utility_api.cpp:36–40

}

void require(bool condition, const std::string & message) {
    if (!condition) {
        throw std::runtime_error(message);
    }
}

std::vector<float> tone(int sample_rate, int samples, float base_hz) {
    constexpr float kPi = 3.14159265358979323846f;