About
The character 哔 (simplified) and its traditional form 嗶 are phono-semantic compounds. The left-side radical 口 (kǒu, "mouth") signals an association with sound or speech. The right component, 毕 (bì) in the simplified form and 畢 (bì) in the traditional, provides the pronunciation. As a phonetic loan, it was created to transcribe foreign sounds or specific noises, and is most commonly used today to represent the electronic "beep" or in the term 哔叽 (bìjī) for serge fabric. Its origin is purely phonetic, without deeper historical or philosophical etymology.