This article explains some theory behind piezoelectric sensors and presents an equivalent circuit that you can use when you’re designing sensor systems.
This article explains some theory behind piezoelectric sensors and presents an equivalent circuit that you can use when you’re designing sensor systems.
This article presents Scilab code that allows you to generate I/Q, noise, and chirp signals from your PC’s headphone jack.
This article presents Scilab code that allows you to generate I/Q, noise, and chirp signals from your PC’s headphone jack.
In this article, we’ll use Scilab to generate numerical signals that can be converted into analog waveforms by a…
In this article, we’ll use Scilab to generate numerical signals that can be converted into analog waveforms by a computer’s audio hardware.
This article will discuss a well-known technique called “double flopping” to transfer a single-bit control signal…
This article will discuss a well-known technique called “double flopping” to transfer a single-bit control signal between two clock domains.
This article discusses the mathematical significance of I/Q signals and presents the final steps in the DSP algorithm for…
This article discusses the mathematical significance of I/Q signals and presents the final steps in the DSP algorithm for decoding frequency-shift-keying baseband signals.
An improved algorithm, in conjunction with quadrature modulation, can achieve FSK decoding that is not affected by phase…
An improved algorithm, in conjunction with quadrature modulation, can achieve FSK decoding that is not affected by phase misalignment.
In this article we’ll use Scilab to explore the effect of unpredictable phase variations in a demodulated…
In this article we’ll use Scilab to explore the effect of unpredictable phase variations in a demodulated frequency-shift-keying baseband signal.
In this Gentleman Maker project, we will use Particle Photon boards to power a motion-sensing trebuchet that can fend off…
In this Gentleman Maker project, we will use Particle Photon boards to power a motion-sensing trebuchet that can fend off all your mischievous intruders.
Learn about a DSP technique that extracts the original digital data from a demodulated frequency-shift-keying baseband signal.
Learn about a DSP technique that extracts the original digital data from a demodulated frequency-shift-keying baseband signal.
This article will discuss what rigid-flex PCBs are, the advantages of using them, and the rules for designing with them…
This article will discuss what rigid-flex PCBs are, the advantages of using them, and the rules for designing with them for an application.
This article will review the common FPGA resources that allow us to efficiently generate and distribute clock signals…
This article will review the common FPGA resources that allow us to efficiently generate and distribute clock signals throughout a system.
This article discusses a technique in which frequency-domain subtraction is used to selectively suppress the noise…
This article discusses a technique in which frequency-domain subtraction is used to selectively suppress the noise components in an audio signal.
This article is an introduction to the complex topic of DSP-based reduction of noise in audio signals.
This article is an introduction to the complex topic of DSP-based reduction of noise in audio signals.
In this article, we’ll use Scilab to create an FM waveform that carries information corresponding to an audio recording.
In this article, we’ll use Scilab to create an FM waveform that carries information corresponding to an audio recording.
This article will try to develop a better insight into wave reflection that can occur when driving a relatively long wire…
This article will try to develop a better insight into wave reflection that can occur when driving a relatively long wire with a fast logic gate.
This article describes an Ethernet-connected subsystem of a larger modular sensor system designed for industrial or smart…
This article describes an Ethernet-connected subsystem of a larger modular sensor system designed for industrial or smart home sensing and monitoring. We will discuss a custom sensor subsystem developed for this application.
Computing a discrete Fourier transform can help you to analyze the ways in which RF modulation affects the spectrum of a…
Computing a discrete Fourier transform can help you to analyze the ways in which RF modulation affects the spectrum of a carrier signal.
Scilab’s FFT functionality can help you understand the frequency-domain effects of RF modulation techniques.
Scilab’s FFT functionality can help you understand the frequency-domain effects of RF modulation techniques.
In this article we’ll work with sinusoidal signals in the frequency domain using Scilab’s fast Fourier transform…
In this article we’ll work with sinusoidal signals in the frequency domain using Scilab’s fast Fourier transform (FFT) functionality.
This article discusses basic signal-processing tasks that can be performed using a free and open source alternative to MATLAB.
This article discusses basic signal-processing tasks that can be performed using a free and open source alternative to MATLAB.
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