在数字数据采集过程中，传感器输出模拟信号，这些信号必须经过数字化处理才能被计算机处理。计算机无法像传感器那样存储连续的模拟时间波形，因此它会将信号分解成离散的“片段”或“样本”来存储。数据记录在时域中，但通常需要进行傅里叶变换才能 ...

The Fast Fourier Transform (FFT) remains a cornerstone of digital signal processing, underpinning applications from telecommunications to medical imaging. Modern FFT processors and architectures have ...

The fast Fourier Transform (FFT), added to an oscilloscope or digitizer, permits measuring the frequency domain spectrum of the acquired signals. This provides a different and usually helpful ...

Analog-to-digital converters (ADCs) are essential building blocks in modern electronic systems. They form the critical link between front-end analog transducers and back-end digital computers that can ...

Every machine has its own way of communicating with its operator. Some send status emails, some illuminate, but most of them vibrate and make noise. If it hums happily, that’s usually a good sign, but ...