When I speak it is in order to be heard.
From a strictly articulatory point of view there is no succession of sounds.
Every linguistic sign is located on two axes: the axis of simultaneity and that of succession.
A new era in the physiological investigation of linguistic sounds was opened up by X-ray photography.
At first acoustics attributed to the different sounds only a limited number of characteristic features.
Now the identification of individual sounds by phonetic observation is an artificial way of proceeding.
Of course, we have known for a long time that a word, like any verbal sign, is a unity of two components.
Linguistic sounds, considered as external, physical phenomena have two aspects, the motor and the acoustic.
Speech sounds cannot be understood, delimited, classified and explained except in the light of the tasks which they perform in language.
It is once again the vexing problem of identity within variety; without a solution to this disturbing problem there can be no system, no classification.