Digital Signal Processing

Design of Digital Signal Processing Experiments Based on ADALM-PLUTO

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Design of Digital Signal Processing Experiments Based on ADALM-PLUTO

Citation format: Wang Jun, He Nan, Cao Jiahui, et al. Design of “Digital Signal Processing” Experiments Based on ADALM-PLUTO [J]. Industrial and Information Education, 2023 (6): 47-50. Submission date: 2020-12-1 Author’s Biography: Wang Jun (1972—), male, from Weinan, Shaanxi, PhD, professor, research areas include real-time signal processing structures and implementations, FPGA/DSP embedded systems, radar signal … Read more

Understanding Eye Diagram Testing

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Understanding Eye Diagram Testing

An eye diagram, as the name suggests, is a graphical representation that resembles an eye. How is it formed? This brings us to the persistence mode of an oscilloscope. The refresh rate of our naked eyes is only 60Hz, which sometimes makes it difficult to detect occasional abnormal signals. The persistence mode can superimpose and … Read more

USB Digital Real-Time Oscilloscope: 5000D Series Adjustable Vertical Resolution

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USB Digital Real-Time Oscilloscope: 5000D Series Adjustable Vertical Resolution

A digital real-time oscilloscope is a type of digital oscilloscope (DSO), also known as a “single-shot” oscilloscope, which captures signals in real-time at a sampling rate far exceeding the signal bandwidth (generally over 2 times, ideally over 5 times), making it easy to observe high-speed single-shot signals. There are three important technical specifications that define … Read more

Understanding Undersampling in Digital Oscilloscope Usage

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Understanding Undersampling in Digital Oscilloscope Usage

Problem Statement Hello, Teacher Zhuo. I observed a strange phenomenon while testing my new motor driver with the oscilloscope: 1. When I set the oscilloscope to a time base on the same order of magnitude as the PWM period, I could measure a standard PWM waveform. However, when I increased the time base, I noticed … Read more

Design of High-Precision DAC Based on High-Speed DDFS

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Design of High-Precision DAC Based on High-Speed DDFS

Today’s Recommended Article The author of today’s recommended article isChina Electronics Technology Group Corporation No. 58 Research InstituteExpertsZhang Tao, Wan Shuqin, Su Xiaobo, Yu Zongguang.This article is excerpted from the paper “Design of High-Precision DAC Based on High-Speed DDFS“, published in the Journal of China Electronics Technology Research Institute, Volume 10, Issue 6. Let’s start … Read more

Methods for Implementing DAC and ADC

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Methods for Implementing DAC and ADC

DAC (Digital-to-Analog Converter) and ADC (Analog-to-Digital Converter) are essential components for converting between digital and analog signals, widely used in electronic systems for various applications such as digital signal processing, data acquisition, and control. So, do you know how to implement DAC and ADC? Methods for Implementing DAC 1. Resistor Network A resistor network is … Read more

What Is a DAC and Its Importance for Headphones?

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What Is a DAC and Its Importance for Headphones?

In the previous article where Little Lion discussed the selection of external sound cards, some friends in the comments mentioned that many DAC headphone amplifiers are actually excellent external sound cards that work perfectly with computers for audio playback. This headphone amplifier is commonly referred to as such; however, it should more accurately be called … Read more

Understanding DAC and Preamplifiers

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Understanding DAC and Preamplifiers

What is a DAC? DAC stands for digital-to-analog converter. It is one of the audio devices that takes digital signals as input and outputs analog signals. Nowadays, many popular audio devices produce digital signals, such as smartphones, laptops, and many A/V receivers. The problem is that many audio devices that allow us to hear these … Read more

Learning About I2S Bus: Concepts and Standards

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Learning About I2S Bus: Concepts and Standards

Background The I2S bus is a common bus that needs to be mastered. Concepts The I2S (Inter-IC Sound) bus, also known as the integrated circuit built-in audio bus, is a bus standard formulated by Philips for audio data transmission between digital audio devices. This bus is responsible for data transmission between audio devices and is … Read more

Is CAN Bus a Digital Signal or an Analog Signal?

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Is CAN Bus a Digital Signal or an Analog Signal?

1. What is CAN Bus? CAN stands for Controller Area Network, developed by the German company BOSCH, known for its research and production of automotive electronic products, and has ultimately become an international standard (ISO 11898). It is one of the most widely used field buses internationally. In North America and Western Europe, the CAN … Read more