What is the Audio Frequency Spectrum? The human audio spectrum ranges from 20Hz to 20KHz. It means we can hear when air shakes back and forth at 20 times per second, and at 20,000 times per second. Any lower or higher and we don't detect anything, so our nerves don't fire so we don't hear. Your ...

Fletcher Munson Curve Quickly ExplainedThe Fletcher-Munson loudness curve is a graph that indicates the human ear’s sensitivity to different frequencies at various levels.This Means:At low listening volumes, the mid-frequency range sounds more prominent, while the low and high frequency ranges ...