Electronics Infoline Web

The Smith Chart

an RF engineering aid by Phillip Smith of RCA

http://sss-mag.com/smith.html

The Smith Chart - A Simple Introduction

http://www.ee.surrey.ac.uk/Personal/D.Jefferies/smith.html

The Spyder - an Eight-Output Pedalboard Power Supply

outputs regulated 9V DC

http://www.geofex.com/Article_Folders/Spyder/spyder.htm

The Statistics Toolbox

The Statistics Toolbox for MATLAB includes functions for Probability distributions, Parameter estimations, Descriptive Statistics, Multivariate statistics, Linear and nonlinear modeling, Statistical plotting, Statistical Process Control, Design of Experiments, Hypothesis Tests, Cluster Analysis

http://www.mathworks.com/products/statistics

The Swezey Digital Filter Program!

Shareware DSP program for use with a PC and shortwave receiver.

http://www.winternet.com/~swezeyt/dsp.htm

The Technology of the Tube Screamer

The Tube Screamer series of distortion/overdrive boxes from Ibanez has a reputation that has led them to pass into musical urban myth. Helped along with Stevie Ray's use of them, the TS 808 and TS 9 have been sought after and traded up to astronomical prices. All the members of the TS family share a common technical design, with the similarities vastly overwhelming the differences. This document describes the technologies used in them.

http://geofex.com/Article_Folders/TStech/tsxfram.htm

The Technology of Wah Pedals

The stock "wah" pedal has been around since at least the early 60's. This thing produces a distinctive tone that is well loved by the expressive guitarist. What a wah does is clear - it is either a bandpass filter or an overcoupled lowpass filter that exhibits a resonant peak just at its lowpass rolloff frequency. The resonant peak can be moved up and down in frequency by the player, and this makes for a striking emulation of the human voice making a "waaaah" tone, or its tonal inverse, "aaaooow".

http://www.geofex.com/Article_Folders/wahpedl/wahped.htm