What are the two mechanical sound requirments for an acoustical musical instrument ? a sound producer

a sound producer and chamber to amplify the sound

a microphone and an amplifier a way of changing the pitch and a chamber to amplify the sound

a way of changing pitch and a chamber to amplify the sound

The linear perspective changed the quality of art because it gave art a sense of reality. it gave the illusion that the background and surroundings were actually close and/or far and a sense of depth. linear perspective change the quality of art following its birth the renaissance period as they want the art to be more realistic and they believe one way to achieve it is to use the method of linear perspective. it uses the principle of math to realistically portray space and depth in art.