１．前言随着改革开放的深入和旅游业的蓬勃发展，愈来愈多的大型商场、宾馆酒店呈现在人们面前。为了营造一种轻松愉快的购物或旅游住宿环境，这些场所的重要硬件设施之一的背景音乐系统已日趋完善。同时，这些场所由于人员密集、易燃物品较多，人们防火意识自觉，其自动... 1. Foreword With the deepening of reform and opening up and the vigorous development of the tourism industry, more and more large shopping malls and hotels and hotels have appeared before the people. In order to create a relaxed and enjoyable shopping or tourist accommodation environment, the background music system of one of the important hardware facilities of these places has been perfected. At the same time, because of the densely packed and flammable materials in these places, people are conscious of fire prevention and they automatically...