signal to noise ratio

例句：

1. 1. The engineer measured the signal-to-noise ratio of the new device.
   工程师测量了新设备的信号噪声比。
2. 2.The scientist used a high-quality microphone to improve the signal-to-noise ratio of the recording.
   科学家使用高质量的麦克风来提高录音的信号噪声比。
3. 3.The engineer analyzed the data to optimize the signal-to-noise ratio for better performance.
   工程师分析数据以优化信号噪声比，以获得更好的性能。