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直接辐射式扬声器系统的低频特性可表示为系统部件的基本参数的函数。这些系统在低频段如同一个低效率的高通滤波器,把电信号转换为声信号。系统的频率特性由有理多项式函数描述,该函数的系数包含基本的部件参数。这些参数易于求得,它们决定了系统的低频响应、效率和功率额定值。
The low frequency characteristics of a direct radiating loudspeaker system can be expressed as a function of the basic parameters of the system components. These systems act as an inefficient high-pass filter in the low frequency range to convert electrical signals to acoustic signals. The frequency characteristics of the system are described by a rational polynomial function whose coefficients contain the basic part parameters. These parameters are easy to find, they determine the system’s low-frequency response, efficiency and power rating.