Feedback loop for musical instruments

摘要: An electrical pickup is secured to the output of a musical instrument, such as bell end horn. The signal amplified. amplifier applied through feedback loop input mouthpiece includes small speaker. In one form invention, speaker mounted at horn so that its fortifies acoustic energy developed by instrument player. another consists an earphone worn or held against ear this case player himself modifies his playing mode in accordance with what he hears earphone. Thus involved loop.