time signature
US /ˈtaɪm ˌsɪɡ.nə.tʃər/
UK /ˈtaɪm ˌsɪɡ.nə.tʃər/

1.
metrum, oznaczenie taktowe
a musical notation indicating the number of beats per measure and the type of note that receives one beat
:
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The composer changed the time signature from 4/4 to 3/4 in the middle of the piece.
Kompozytor zmienił metrum z 4/4 na 3/4 w środku utworu.
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Common time signatures include 4/4 (common time) and 3/4 (waltz time).
Typowe metry to 4/4 (metrum proste) i 3/4 (metrum walca).