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An Introduction to Companding: Compressing Speech for Transmission Across Telephone Systems

An Introduction to Companding: Compressing Speech for Transmission Across Telephone Systems

This article introduces the analog-to-digital conversion required to compress speech for transmission across telephone systems.


Intelligence at the Edge Part 1: The Edge Node

Intelligence at the Edge Part 1: The Edge Node

The industrial Internet of Things (IoT) encompasses the broad transformation underway that will make pervasive sensing across connected machines not just a competitive advantage, but an essential fundamental service. The industrial IoT starts with the edge node, which is the sensing and measurement entry point of interest.


Incorporating Microphone Functionality into a Robot System

Incorporating Microphone Functionality into a Robot System

In this article, we’ll look at a fairly straightforward circuit that enables a robot or other device to detect sound.


Projects Sep 11, 2017 by Robert Keim
Build Your Own Motion Detection System Using an Accelerometer

Build Your Own Motion Detection System Using an Accelerometer

This project uses a C8051 microcontroller development kit, an accelerometer evaluation board, and Simplicity Studio IDE—all from Silicon Labs—to rather quickly and easily build a motion-detecting alarm system.


Projects Aug 31, 2017 by Nick Davis
An Introduction to the Fast Fourier Transform

An Introduction to the Fast Fourier Transform

This article will review the basics of the decimation-in-time FFT algorithms.


Teardown Tuesday: Hi-Fi Audio Amplifier with Bluetooth

Teardown Tuesday: Hi-Fi Audio Amplifier with Bluetooth

In this teardown, we examine the Lepy LP-168 Hi-Fi Stereo USB Audio Amplifier with Bluetooth, by NKTECH.


News Aug 15, 2017 by Nick Davis
Fruit Drums with Circuit Playground’s Capacitive Touch Sensors

Fruit Drums with Circuit Playground’s Capacitive Touch Sensors

Use Adafruit's Circuit Playground to make your own fruity (drum) loops!


Projects Aug 04, 2017 by Ryan Jones
How the Space Race Gave Us GPS Technology

How the Space Race Gave Us GPS Technology

The history of the Global Positioning System (GPS) began miles above the Earth, going 18,000 mph.


News Jul 26, 2017 by Marie Christiano
Massive MIMO and Beamforming: The Signal Processing Behind the 5G Buzzwords

Massive MIMO and Beamforming: The Signal Processing Behind the 5G Buzzwords

With the need for high-speed mobile data increasing, there's a need to increase efficiency in how we transmit and receive data from wireless base stations.


Better Insight into DSP: 10 Applications of Convolution in Various Fields

Better Insight into DSP: 10 Applications of Convolution in Various Fields

This article presents an overview of various applications which exploit convolution, an advanced signal operation.


NATO Adopts New Protocol Standard for Underwater Communications

NATO Adopts New Protocol Standard for Underwater Communications

Underwater transmission protocols may finally be unified in a protocol that aims to help interconnectivity with devices ranging from buoys to submarines.


News Jul 18, 2017 by Robin Mitchell
Teardown Tuesday: Wi-Fi HD Security Camera

Teardown Tuesday: Wi-Fi HD Security Camera

In this teardown, we scrutinize the workings of the FunAce Robot WiFi HD Camera.


News Jul 11, 2017 by Nick Davis
Maxim Integrated’s Sound Activated NeoPixel Rave Goggles

Maxim Integrated’s Sound Activated NeoPixel Rave Goggles

Be the spectacle at this summer's music festival with these sound activated rave goggles!


Projects Jul 07, 2017 by Ryan Jones
Teardown Tuesday: Leeo Wi-Fi Carbon Monoxide and Smoke Alarm

Teardown Tuesday: Leeo Wi-Fi Carbon Monoxide and Smoke Alarm

In this teardown, we examine the PCBs and the main ICs found inside the Leeo Smart Alert Nightlight.


News Jun 27, 2017 by Nick Davis
TDK-Lambda CUS200M Series Power Supplies | New Product Brief

TDK-Lambda CUS200M Series Power Supplies | New Product Brief

TDK-Lambda CUS200M Series power supplies are high-efficiency power supplies for applications that require low acoustic noise, such as medical, dental, broadcast, and professional audio equipment.


High Fidelity, Low Power: A New Audio Amplifier from Analog Devices

High Fidelity, Low Power: A New Audio Amplifier from Analog Devices

You can simplify and improve the performance of your audio circuits with amplifier ICs such as the SSM6322.


News Jun 21, 2017 by Robert Keim
Understanding and Eliminating 1/f Noise

Understanding and Eliminating 1/f Noise

This article defines 1/f noise and goes over ways to reduce or eliminate it in precision measurement applications.


Improving on an Improvement: A New MEMS Microphone from PUI Audio

Improving on an Improvement: A New MEMS Microphone from PUI Audio

MEMS microphones offer advantages over electret devices and now we have the PMM-3738-VM1000-R, which offers advantages over the standard MEMS approach.


News Jun 01, 2017 by Robert Keim
GE Unimpossible Missions Series: Fighting Fire with Fire

GE Unimpossible Missions Series: Fighting Fire with Fire

A multi-part series on GE's Unimpossible Missions, which challenge engineers and scientists with tasks where they demonstrate what can be accomplished when experts collaborate.


News May 27, 2017 by Donald Krambeck
Add Voice Commands to Your Next Project with Bluetooth LE

Add Voice Commands to Your Next Project with Bluetooth LE

This project uses the Alorium Technology XLR8, a Bluetooth LE HID Implementation, and the EasyVR voice recognition module to add voice-activated movements to your next project.


Projects May 17, 2017 by Mark Hughes