The digital lock-in technique is used to rather extract the effective signal from the noise and reduce the measurement error.

采用数字锁相技术从噪声中提取有效信号，以减小测量误差。

youdao

To predict the major sources of low-frequency noise and reduce it are recent difficulties in researching the vehicle interior noise.

在研究汽车车内噪声的过程中，判断低频噪声的主要来源和降低车内低频噪声水平是一个难点。

youdao

They keep our air clean, reduce noise pollution, improve water quality and provide food and building materials.

他们保持我们的空气清洁，减少噪音污染，改善水质，提供食品和建筑材料。

youdao

Better shaped propellers and ship designs can help to reduce noise.

VOA: special.2011.06.29

He said the airport would continue to work with airlines, traffic control company Nats, policy makers and residents to reduce noise further while "safeguarding the vital connectivity and economic growth that Heathrow provides".

BBC: Heathrow to rank airlines on noise pollution

The Logitech TV Cam HD provides four microphones to help reduce noise and echoes for enhanced audio quality.

ENGADGET: Logitech launches TV Cam HD for living room video chats: built-in Skype, 720p, $200

Motorola's chips are also programmed with algorithms to reduce noise and interference.

FORBES: Magazine Article