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Literally, to hear with two ears. Opposite of MONAURAL HEARING. The fact that the ears are some distance apart allows the localization of sound by registering the slight differences in time, PHASE and INTENSITY of the sound striking each ear. Each of these parameters has a different area of effect, intensity being a major factor above 1500 Hz (see SOUND SHADOW), while PHASE DIFFERENCEs (which are equivalent to time differences) are used in localizing lower frequency sounds.
The ability to judge PITCH absolutely, without reference to another pitch or frequency. Also called absolute pitch. Perfect pitch appears to be an innate ability of some individuals, whereas related skills, such as remembered pitch or relative pitch which use other pitches as references, can be learned through musical practice.
In the perception of ACOUSTIC SPACE, projicience refers to the sense of depth of a sound in the space.
A single sound of definite, recognizable PITCH. It also refers to the SONORITY or the quality of TIMBRE of a particular sound or sounding instrument. In British musical usage the word is also employed to refer to the INTERVAL of a major SECOND.