Meaning of tremulant in music
According to various musical dictionaries and sources, a tremulant refers to a device or mechanism on some musical instruments that produces a trembling or vibrato sound:
- On pipe organs, a tremulant is a mechanical device that opens and closes the air passage rapidly, causing a pulsating effect. This produces a quavering or trembling sound.
- On string instruments, a tremulant effect can be achieved by wavering the bow or fingers, causing variation in pitch or tone. This produces a vibrating or oscillating sound.
- In the voice, a natural tremor or shaking in tone is described by some musicians as the tremulant effect.
So in general terms, a tremulant in music produces a quivering, shaking, or vibrato sound through mechanical or manual means. The effect can be used for expressive purposes to convey emotion.
A mechanical device on an organ or accordion that couses fluctuations of air pressure to the reeds causing a vibrato effect. On the accordion, additional reeds are also employed that are tuned slightly higher than the original notes providing a slight fluctuation of pitch as well.
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