Such sound changes are still continuing and often differences can be
observed between the pronunciation of older and younger speakers in a
community.sound symbolism n
refers to a range of phenomena in which there is a non-arbitrary relationship
between the sound of a word and its meaning, including interjections,
onomatopoeia, and ideophones.
sound wave n
wave-like movements of air which transmit sounds. In speech, sound waves
are caused by the vibration of the vocal cords.
The rate at which the air in a sound wave moves backwards and forwards
in a given time is called frequency. The faster the movement, the higher the
frequency. A speech sound is a combination of simple sound waves vibrating
at different frequencies and forming a complex sound wave, e.g.:
sourceThe lowest frequency in a complex sound wave is called the fundamental
frequency. It is the same frequency as that at which the vocal cords are
vibrating.source^1 n
see information theory
source^2 n
(in case grammar) the place from which someone or something moves or
is moved.
For example, the station in:
He came from the station.