Tag Archives: digital

Yesterday we had a look at valves or vacuum tubes and today I`m going to take that thinking to echo. What kind of echo do you like? Crisp clear and digital? I`ve got a Line 6 echo park under my desk but that`s just because I use it for fun at work – it`s not really got the flavour and the behaviour I really dig. It`s just not tasty enough. If you really want to get fat rounded sounds then these are the echo units you should consider having a look into.

Gibson Echoplex
Roland Space Echo
WEM copycat
Binson Echorec
Blue coconut echoverb

The absolute beauty of tape based echo units lies in the fact that tape itself is analogue – moving the tape across a tape head polarizes the magnetic domains in the tape in proportion to the fluctuations in the audio signal. The granular nature of the magnetic material adds noise to the signal and because the magnetic characteristics of tape are not linear tape exhibits a characteristic hysteresis curve, which causes unwanted distortion of the signal. Any analog signal must theoretically have noise and a finite slew rate. It`s the imperfection in tape that makes the sound so delicious.

Whilst having a jam outside in the hot sun one year the copycat tape began to melt, decay and whither and this lead to some pretty crazy sounds coming through the p.a. and across the Surrey Hills. If you want to hear some Space Echo then maybe have a look at Adam Ants Table Talk from his unbelievably mind blowing 1979 release Dirk Wears White Sox. If you haven`t heard it buy it. It`s incredible IMHO.

   
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This is a hot topic. Maybe there`s no right or wrong? Maybe some applications are more suited to one medium than the other. Here are the facts and make of them what you will.

An analog recording is one where the original sound signal is modulated onto another physical medium or substrate such as the groove of a gramophone disc or the iron oxide surface of a magnetic tape. A physical quality in the medium (e.g., the intensity of the magnetic field or the path of a record groove) is directly related, or analogous, to the physical properties of the original sound (e.g., the amplitude, phase, etc.)

A digital recording is produced by converting the physical properties of the original sound into a sequence of numbers, which can then be stored and played back for reproduction. The accuracy of the conversion process depends on the sampling rate and depth. However, unlike analog recording which depends critically on the long-term durability of the fidelity of the waveforms recorded on the medium, the physical medium storing digital samples is essentially immaterial in playback of the encoded information so long as the original sequence of numbers can be recovered.

There`s a fundamental difference here obviously. When it comes to guitar it`s a worthwhile practice to consider your hands, guitar, strings, lead, and amp as the instrument – as a holistic whole, and it is this which gives the instrument its oneness, dynamism and character. Take a zen approach and aim for the guitar to be playing you rather than the other way around. The most natural-sounding overdrive devices are vacuum tubes – a natural-sounding overdrive will make use of playing dynamics and will respond to different string attacks with varying tones and levels of distortion. I like Mesa amplifiers and Soldano, but I rely upon some particular transistor amplifiers because built correctly they sound just as tasty. There`s a really good article here about speakers, transistors, valves, distortion and more.

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POST UPDATED – see comments for more guitar tone information !!

Jamie from the US has asked us how to get a fat tone from his Les Paul. Well, tone is a particularly personal matter but also comes in as many flavours as the imagination. There is no single method, set up or solution. Alot of TONE variation is achievable simply through your guitar to start with. If you simply use your neck pick up you will find the tone becomes more warm, more naturally rounded, rich, arboreal and smooth. Compliment this through changing your tone selector pot and you`ll be on the way. A tube or valve amp such as a Vox AC 30, or a Sunn amp will also help. Personally I use an Award Session amplifier.

It`s best to experiment with as much gear as you can. If you can`t get hold of a valve amp try a valve based pedal – maybe an Electro Harmonix English MuFF`n or Big Muff PI. These things`ll give you a fat range of tones from Clapton through to Leslie West and more. You could of course hitch a ride along the digital highway and look at stuff like the Line 6.

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