浅谈扩声系统的可靠性

Discussion of Sound Reinforcement System Reliability

从兼顾系统可靠性和经济性的角度,用实际案例浅析扩声系统的可靠性。分析影响扩声系统可靠性的主要节点,存在于应力集中、高温、高压的部位,如音箱单元、大功率功放的电源及输出部分。通过对扩声系统声音能量频谱、峰值因数时空结构进行分析,提出了兼顾可靠性和经济性的选择思路和正确测量设备的建议。

Based on a detailed analysis of reliability and economy, a practical schematic of sound reinforcement system re- liability design is presented. The existence of the stress concentration and the conditions of high - temperature high - pres- sure, is the factor that influence the reliability of system, such as speaker unit, power supply and outputs unit of high - power amplifier. Parameters that affect the reliability of sound reinforcement system are analyzed and suggestions are made for unit choice and measurement, include sound energy spectrum, peak factor space structure.