geraintluff

	template<typename Sample=double>
	struct BarkScale {
		Sample barkToHz(Sample bark) const {
			return (a + b*bark)/(c + d*bark);
		}
		Sample hzToBark(Sample hz) const {
			return (c*hz - a)/(b - d*hz);
		}
		Sample barkToBw(Sample bark) const {
			Sample div = c + d*bark;