👉 In acoustics, a subbore is a type of sound source that produces a low-pitched noise when an acoustic instrument such as a piano or organ is played. The term "subbore" comes from the Greek word "sub", which means below, and "bore", which refers to a hole in a pipe. A subbore can be defined as any element within an acoustic system that produces a low-pitched noise when an instrument such as a piano or organ is