Examlex
Why is it helpful for humans that plants make their own food?
Pitch
A perceptual property of sounds that allows their ordering on a frequency-related scale, or more commonly, the perception of how high or low a sound is.
Frequency
The number of occurrences of a repeating event per unit of time, often measured in hertz (Hz).
Timbre
Timbre is the quality of a musical note, sound, or tone that distinguishes different types of sound production, such as voices or musical instruments.
Tinnitus
The hearing of sound when no external sound is present, often described as ringing in the ears, but may also sound like clicking, hissing, or roaring.
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