If you are talking about syllables, then only one (1).

But if you are talking about actual sounds, as in the SOUND that a car horn makes, then it is three(3): ah-s-k

Gene Harris of the Three Sounds was created in 1972.

The three sounds of static are crackling, popping and explosive sounds. The sound depends on the amount or condition of static charges.

There are three phonemes, or speech sounds, in the word mat: m / a / t

CD USA - 2006 Three 6 Mafia Natasha Bedingfield Danity Kane The Sounds 1-31 was released on:

USA: 19 August 2006