Tone (musical instrument) their tone. These may include equalization controls (such as the tone controls on electric guitars, basses, and amplifiers), "gain, drive, or fuzz" controls, reverb, etc. Electronic keyboards and synthesizers typically have multiple patches that can be selected to make the instrument produce a different timbre. Timbre Tone (musical instrument) Tone and sound are terms used by musicians and related professions to refer to the audible characteristics of a player's sound. Tone is the product of all influences on what can be heard by the listener, including the characteristics of the instrument itself, differences in playing technique (e.g. embouchure for woodwind
Geophone (musical instrument) Geophone (musical instrument) The geophone is a percussion instrument, invented by the French composer Olivier Messiaen for use in his large composition for piano and orchestra entitled "Des canyons aux étoiles…" ("From the canyons to the stars…"). It consists of a drum filled with thousands of small lead pellets, and is played by swirling it around slowly so that the noise of the pellets resembles the sound of dry shifting earth. Messiaen commissioned a Parisian instrument maker to construct one to his design, and he carried this instrument worldwide to early performances of the piece (which was given its first