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How to Use a Robot to Record and Transfer Audio Signals

How to Use a Robot to Record and Transfer Audio Signals

This article provides detailed information on sampling audio signals and transferring the data to a PC for analysis.


Projects Sep 15, 2017 by Robert Keim
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.


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
Understanding Total Harmonic Distortion (THD) in Power Systems

Understanding Total Harmonic Distortion (THD) in Power Systems

This article describes the cause and effect of total harmonic distortion (THD) in power systems. Some means of improving THD are also discussed.


How to Build a Touchless MIDI Controller with Arduino

How to Build a Touchless MIDI Controller with Arduino

Learn how to build your own touchless MIDI controller using an Arduino... video and code file included.


Projects Nov 03, 2016 by Evan Kale
EFM8 Sound Synthesizer: Driving the Speaker

EFM8 Sound Synthesizer: Driving the Speaker

Part 2 in the “How to Make an EFM8-Based Sound Synthesizer” series.


Projects Sep 11, 2015 by Robert Keim