Final answer:
Microphones have transformed vocal performances by allowing subtler vocal nuances to be heard, leading to a more intimate and expressive singing style, especially in larger venues.
Step-by-step explanation:
The invention of the microphone has drastically changed vocal performances, particularly in larger venues where natural voice projection is insufficient. Contrary to diminishing vocal expression or range, microphones have enabled subtler vocal nuances by amplifying quieter parts of a performance that might otherwise be inaudible to an audience. This technology allows for a more intimate and expressive singing style which was previously not as achievable in large venues. The microphones used, whether hand-held or wireless body microphones, are designed to support and amplify the voice without altering the sound significantly. Additionally, the development of sound design as a professional field, ushered in by pioneers like Dan Dugan, has enabled the refinement of sound in live performances, leading to an enhanced audience experience.