音高、音量是什麼意思？

Pitch.
The particular quality of a sound (e.g. an individual musical note) that fixes its position in the scale. Certain sounds used in music that occupy no particular scale position, such as those produced by cymbals or the side drum, can be said to be of indefinite pitch. Pitch is determined by what the ear judges to be the most fundamental wave-frequency of the sound (even when, as for example with difference tones, this is an aural illusion, not actually present in the physical sound wave). Experimental studies, in which listeners have been tested for their perception and memory of pitch differences among sounds with wave-frequencies known to the experimenter, have shown that marked differences of timbre, loudness and musical context affect pitch, albeit in relatively small degree. But long-term memory, called Absolute pitch, enables some people to identify the pitch of sounds quite apart from their contextual relation to other sounds. Such aspects of pitch are discussed in Psychology of music, §II, 1.

Pitch is expressed by combining a frequency value (such as 440 Hz) with a note name. a' = 440 Hz is a pitch, as is g' = 440. If g' is 440, in equal temperament, then a' will be 494 Hz; if a' = 440, g' will be 392 Hz. Frequencies and pitches by themselves are simply natural phenomena; it is only when they are connected to pitch standards that they take on a musical dimension. A pitch standard is a convention of uniform pitch that is understood, prescribed and generally used by musicians at a given time or place. The statement ‘Cammerton was at a' = 415’, for example, combines the name of a pitch standard (Cammerton or ‘chamber pitch’) with a note-name (a') and a frequency (415 Hz). Over the last 400 years in Europe, the point that has been considered optimal for pitch standards has varied by about six semitones, depending on time and place.

This article discusses the pitch standards that have been used in various places and periods in Europe. The concept of pitch standards and attempts to measure pitch systems in non-Western music are also discussed.

Volume, In music----> dynamics, refers to the softness or loudness of the sound or note. The term is also applied to the written or printed musical notation used to indicate dynamics.

音高 is pitch and 音量 is volume.