频率下限 meaning in English

lower frequency limit
lower limit frequency

The brief name ring , measures a device right high , inside , low and each segment scope for ability for even emersion of signal , pointing lowestly validity returning putting the frequency with tallestly validity returning put of the frequencying . request towards device rang contain both side , on is a scoping as far as possible breadth , can be namely frequency bottom that replay the is as far as possible low , and the upper limit is as far as possible high ; two is a frequency scope the inside is at all point to respond to as far as possible flat , avoided to appeared the big motion
简称频响，衡量一件器材对高中低各频段信号均匀再现的能力，指最低有效回放频率与最高有效回放频率之间的范围。对器材频响的要求有两方面，一是范围尽量宽，即能够重播的频率下限尽量低，上限尽量高二是频率范围内各点的响应尽量平坦，避免出现过大的波动。