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MIDIGEN – A (belated) LEMS postscript

This short article discusses an add-on to the following:

The Brute: A 3-channel Audio Amplifier For Leslie Speaker Emulation.
Treslie: 3-Phase Leslie Speaker System.
LEM: Leslie Emulation Control System using PIC Microcontroller (18F26K20) based on Pequeno board, (Arduino-alike) and 3 DACs.

Shortly after completing LEMS, The Brute and Treslie, (see links above) it became apparent to me, that [...]

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Guitar Chord Repositories

Over 1500 ready-made SVG guitar chords, either to download or use online

I resisted the temptation to make this post the 4th in the recent series: Guitar Chord Diagrams in SVG? It is a little more than that.
Over the 3 posts on SVG chords I’ve emphasized that my aim was to achieve an easy method of [...]

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Guitar Chord Diagrams in SVG? – Part 3

Now! Embed SVG chords directly in OpenOffice.Org Writer Documents!
Update 19th June 2012: Python SVG Chord generator code now available

Previous posts on this subject can be accessed by the following mini-menu:

Read part 1 of this topic
Part 2
Invoking the Chord Engine & what it produces.
Feeling left out? Chords for the left-handed player.
A sample auto-generated SVG Guitar [...]

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Guitar Chord Diagrams in SVG? – Part 2

Updated 21st October 2011 & 17th June 2012. Chord engine now includes scaling, and SVG chords can now be embedded directly in OpenOffice.Org Writer documents (see part 3)

This will be the concluding article on drawing Guitar Chord Diagrams using SVG. Any further material (yes, there will be more!) I generate will be added to this, [...]

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Guitar Chord Diagrams in SVG? – Part 1

Caveat: The chord shapes defined in SVG on this post may not show in certain browsers.
The browsers which correctly render SVG I have tried are: Google Chrome 14.0.835.202 m, and Mozilla Firefox 7.0.1. Internet Explorer 8 does not display SVG correctly.

Update: 13th October 2011 & 17th June 2012
There are now 2nd and 3rd parts to [...]

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Single-transistor pre-amp for very-low-impedance Guitar Pickups

A number of my posts (see menu at foot of post) have covered the construction and amplification of home-made guitar pickups fabricated from hard-disk magnets. The amplification so far discussed has generally included the use of op-amps – particularly the Texas TL071/072/074 series. With this post I discuss an alternative – a single transistor amplifier, [...]

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Treslie – A 3-phase speaker system for Leslie emulation

This post describes the design and construction of a 3-phase loudspeaker intended for Leslie Speaker emulation. The unit is intended to be driven by a 3-channel audio amplifier The Brute, which in turn is controlled by LEMS, a micro-controller based control system, the construction of which both are described in companion posts.

Final tests on [...]

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LEMS – A Leslie Speaker Emulation System

Updated: 16th July 2011 @ 3:02am
This post describes the design and construction of a Leslie Speaker Emulation System (LEMS) control unit, based around an 18F26K20 PIC Microcontroller. The unit is intended to be used to split an audio signal into 3 phases, amplitude modulate these and feed to a Leslie Speaker Emulation driver unit [...]

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The Brute: A 3-channel Audio Amplifier For Leslie Speaker Emulation

This post describes the design and construction of a 3-channel, 30 watts per channel, audio amplifier. Although my amp incorporates two antique HY60 power modules, construction details are given for construction using the modern TDA2050A, capable of yielding 32 watts. The amplifier is intended to be used as a Leslie Speaker Emulation driver unit, delivering [...]

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Guitar Chords

Chords – Section 1

Guitar Chords – Section 2.

Full-size images of the above are here: http://joebrown.org.uk/GuitarChords/Pg1.jpg and here: http://joebrown.org.uk/GuitarChords/Pg2.jpg

Chords stolen from this really excellent little book:

This book, and others in the series, are available from: www.musicsales.com

And if you are looking for that special cup to drink your wine from whilst playing ‘Hotel [...]

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