What is described as concussion idiophones?

Concussion idiophones are defined as instruments that create sound primarily through the direct impact of two objects striking each other. This classification includes instruments such as cymbals and clappers, where the sound is generated by the collision of solid materials.

The distinction is that it refers specifically to the action of striking and the resulting sound, rather than involving other means of sound production. For example, while mallet-struck instruments create sound via mallet impact, they do not fall under concussion idiophones because they involve a third object (the mallet) to create the sound. Similarly, instruments that vibrate on their own or rely on resonance to produce sound do not meet the criteria for concussion idiophones, as they do not involve the collision of two distinct objects directly. Thus, the correct identification of concussion idiophones aligns accurately with the definition provided for this category of instruments.