One hot topic among restaurant-going customers is the level of noise in the restaurant. The main complaint of restaurant customers is high decibel level sound. Restaurateurs present their establishment as a quiet place or a hot spot to attract more clientele. Often the critics rate acoustics as one of the important aspects in their reviews of restaurants. Often, restaurant customers who complain about the poor service cite noise as one of the main reasons for their complaint. In one “Consumer Reports” surveys of more than 47,000 readers reflecting about 110,000 restaurants experiences at about 100 different chain restaurants, one out...