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
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
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
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
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
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
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
The Fourth Industrial Revolution, driven by technologies such as the Internet of Things, big data, robotics, and artificial intelligence, is sweeping across the globe at an unprecedented pace. As a fundamental aspect of these technologies, digital signal processing has become essential knowledge for relevant technical personnel. The digital signal processing course serves as a major … Read more
Introduction Statement To deepen the reform of graduate courses, optimize course content, improve teaching methods, and establish a graduate course system that meets the needs of economic and social development, aligns with the goals of cultivating outstanding talents, and reflects the characteristics of Hebei University of Technology, the school has always adhered to the educational … Read more
If you want to upgrade your car audio, many car owners will hear recommendations from some modification shops, “Add a DSP”. So what is this DSP? Why do shops recommend it for installation? DSP is an abbreviation, and its full name in Chinese is: Digital Signal Processing. The principle is to convert analog signals into … Read more