Of the sounds we have already mentioned, the set [p], [b], [t], [d], [k], [ɡ] are all produced by some form of “stopping” of the air stream (very briefly) then letting it go abruptly. This type of consonant sound, resulting from a blocking or stopping effect on the air stream, is called a stop (or a “plosive”). A full description of the [t] sound at the beginning of a word like ten is as a voiceless alveolar stop. In some discussions, only the manner of articulation is mentioned, as when it is said that the word bed, for example, begins and ends with voiced stops.