Auditory phenomena refer to various experiences related to sound perception that can occur in different contexts. These can include effects like tinnitus, where individuals hear ringing or buzzing sounds without an external source, or auditory hallucinations, which involve perceiving sounds that are not present. Such phenomena can arise from medical conditions, psychological factors, or environmental influences. Another example of auditory phenomena is the Doppler effect, which describes the change in frequency or wavelength of sound waves as the source moves relative to an observer. This effect is commonly experienced when a vehicle passes by, causing the sound to change pitch. Understanding these phenomena helps in studying human perception and sound behavior.