Complex sentence: The commonly stated range of human hearing is 20 Hz to 20 kHz, which corresponds to sound waves in air at 20 ° C with wavelengths of 17 meters to 1.7 cm (56 ft to 0.7 inch).
Split into simpler sentences: The commonly stated range of human hearing is 20 Hz to 20 kHz. This corresponds to sound waves in air at 20 ° C with wavelengths of 17 meters to 1.7 cm (56 ft to 0.7 inch).