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A public address system (or PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music.
Public speaking, also referred to as oratory, is the practice of delivering speeches before a live audience on varying matters. [ 3 ] Throughout history, public speaking has held significant cultural, religious, and political importance, emphasizing the necessity of effective rhetorical skills in order for one to convey their view.
Smaller speakers are found in devices such as radios, televisions, portable audio players, personal computers (computer speakers), headphones, and earphones. Larger, louder speaker systems are used for home hi-fi systems (stereos), electronic musical instruments, sound reinforcement in theaters and concert halls, and in public address systems.
Speaker stands are stands on which loudspeakers are placed with the aim of improving the quality of sound from the speaker. In the 1970s [1] musicians and high fidelity enthusiasts found that lifting speakers off the ground and mounting them on something with no vibration increased sound quality.
A JBL floor monitor speaker cabinet with a 12" woofer and a "bullet" tweeter. Typically, the speaker would be covered with a metal grille to protect it. A stage monitor system is a set of performer-facing loudspeakers called monitor speakers, stage monitors, floor monitors, wedges, or foldbacks on stage during live music performances in which a sound reinforcement system is used to amplify a ...
Large speakers (or large arrays), such as these, have an interference pattern in the nearfield which produces peaks 6 dB higher than the output pressure and nulls where the pressure is essentially zero. [9] The larger the speaker, and the higher the frequency, the longer the effective nearfield.
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