trebles

Treble refers to the higher part of the audible spectrum and to high-pitched musical parts. In Western music notation, the treble or G clef is used for pitches generally above middle C. The treble staff places G4 on the second line, with lines E-G-B-D-F and spaces F-A-C-E. It is typically used for higher-pitched instruments such as the violin, flute, and trumpet, as well as for trebles and other high registers. Trebles are often contrasted with bass and midrange parts.

In audio technology, treble describes the high-frequency portion of sound. Treble controls on amplifiers, mixers, headphones, and speakers adjust high-frequency content, often in roughly the range of 4 kHz to 20 kHz, though exact bands vary by device. Increasing treble can brighten audio and emphasize clarity, while reducing treble can soften sibilance and harshness. Treble performance is influenced by loudspeaker design, room acoustics, and microphone characteristics.

Beyond notation and audio, trebles appear in other contexts. In choral singing and vocal groups, trebles refer to the highest voice parts, often sung by children or women with high ranges. In sports, the term treble denotes winning three major trophies in a single season, such as a domestic league, a domestic cup, and a continental competition.