Latest Digital Signal Processing Articles and Videos

Scientists at EPFL have invented an acoustic prism which separates different frequency components of sound similar to an…

Scientists at EPFL have invented an acoustic prism which separates different frequency components of sound similar to an optical prism.

For this article, we are only concerned with one type of sensor that can measure temperature. This sensor is called a thermistor.

For this article, we are only concerned with one type of sensor that can measure temperature. This sensor is called a thermistor.

In this article, we will discuss several design examples of FIR filters using the window method. The simulated frequency…

In this article, we will discuss several design examples of FIR filters using the window method. The simulated frequency response of the designed filters will be compared with the target specifications.

Sensor fusion is the art of combining multiple physical sensors to produce accurate "ground truth", even though each…

Sensor fusion is the art of combining multiple physical sensors to produce accurate "ground truth", even though each sensor might be unreliable on its own.

Learn about the basics, signal conditioning, digital output, and hardware specs of passive infrared sensors.

Learn about the basics, signal conditioning, digital output, and hardware specs of passive infrared sensors.

ADCs (analog-to-digital converters) can be described as either Nyquist-rate or oversampled converters. The Delta-Sigma…

ADCs (analog-to-digital converters) can be described as either Nyquist-rate or oversampled converters. The Delta-Sigma ADC belongs to the oversampled family of converters. It relies upon oversampling and noise shaping to achieve high-resolution conversions.

This article explains how Arduino works from an electronic design perspective. It also explains the role of every part of…

This article explains how Arduino works from an electronic design perspective. It also explains the role of every part of the Arduino.

Learn how to use filter specs to help choose the best window parameters for your FIR filter design.

Learn how to use filter specs to help choose the best window parameters for your FIR filter design.

DSPs mark the third credible silicon choice for deep learning products, especially the embedded systems that require…

DSPs mark the third credible silicon choice for deep learning products, especially the embedded systems that require affordable and low-power solutions.

In this article, we will discuss the fact that choice of different window functions involves a trade-off between the main…

In this article, we will discuss the fact that choice of different window functions involves a trade-off between the main lobe width and the peak sidelobe (PSL). To gain more insight, we will calculate the Fourier transform of a triangular window using the Fourier transform of a rectangular window. The connection between these two windows helps us to better understand the aforementioned trade-off.

A smoother transition band and ripples in the passband are the most important differences between the ideal filters and…

A smoother transition band and ripples in the passband are the most important differences between the ideal filters and those designed by window method. This article tries to provide a deeper insight into how truncation leads to these features.

In this article, we’ll compare active and passive filters and look at some common second-order active topologies.

In this article, we’ll compare active and passive filters and look at some common second-order active topologies.

In this article, we'll review the basic concepts in digital filter design. We'll also briefly discuss the advantages of…

In this article, we'll review the basic concepts in digital filter design. We'll also briefly discuss the advantages of FIR filters over IIR designs, e.g. stability and linear-phase response. Finally, we'll go over an introduction to designing FIR filters via the window method.

Part Three in this three-article series shows you how to generate values for a discrete sinusoid and continuously convert…

Part Three in this three-article series shows you how to generate values for a discrete sinusoid and continuously convert this data into an analog signal without overburdening the CPU.

Part Two in this three-article series explores the SAM4S DAC. We’ll look at hardware configuration, electrical…

Part Two in this three-article series explores the SAM4S DAC. We’ll look at hardware configuration, electrical characteristics, and the application programming interface.

How cheap MCUs are turning ubiquitous sensors into the next IoT frontier.

How cheap MCUs are turning ubiquitous sensors into the next IoT frontier.

Part One in this three-article series focuses on using the SAM4S timer/counter peripheral to precisely control the…

Part One in this three-article series focuses on using the SAM4S timer/counter peripheral to precisely control the DAC’s sampling rate.

DSP is at crossroads, again, and this time at stake are communication, voice, and vision applications in the IoT realm.

DSP is at crossroads, again, and this time at stake are communication, voice, and vision applications in the IoT realm.

Part One in this two-article series focuses on the hardware setup and on using a pulse-width-modulated signal to control a servo.

Part One in this two-article series focuses on the hardware setup and on using a pulse-width-modulated signal to control a servo.