low-frequency padder

例句：

1. 1. The low-frequency padder is used to filter out noise from the audio signal.
   低频滤波器用于从音频信号中滤除噪声。
2. 2. In digital signal processing, the low-frequency padder is used to smooth out the edges of the signal.
   在数字信号处理中，低频滤波器用于平滑信号的边缘。
3. 3. The low-frequency padder is crucial for maintaining the quality of the audio signal during transmission.
   低频滤波器对于在传输过程中保持音频信号的质量至关重要。