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 Forum index » Instruments and Equipment » Strings and things
What guitar sound do you prefer?
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Stream Operator


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PostPosted: Tue Jan 04, 2011 11:50 pm    Post subject: What guitar sound do you prefer?
Subject description: from a signal analysis perspective
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I've just downloaded the demo version of Electroacoustic Toolbox, which is basically a spectrum analyzer, scope, and other stuff for your soundcard. I measured some signals from the OYT guitar invention in both factory and invention switch position, and was rather surprised at what I saw.

In particular there was no additional harmonic content with the invention. I also noted that a super-sharp initial transient occurs with the factory setup that is not there for the invention (attack i guess you'd call it), and a greater content at discordant frequencies, i.e. frequencies not at harmonic multiples.

Much to my surprise one guitarist on another forum said that he prefers the factory pickups because he likes the "richer harmonic content". Maybe guitarists like a little bit of dissonance, maybe a lot? This got me thinking about ways to make the invention more acceptable to the guitarist community. I could purposely create more discord if that's desired. I could add circuitry that increases the same stuff.

Backing up a bit, I guess I should just ask: what do you want in your guitar spectrum / waveform?

Les

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BobTheDog



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PostPosted: Wed Jan 05, 2011 12:55 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Les,

Can you post some images of the frequency graphs?

Cheers

Andy
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Stream Operator


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PostPosted: Wed Jan 05, 2011 2:46 am    Post subject: Reply with quote  Mark this post and the followings unread

Sure Andy,

In this example I have placed the magnets near the bridge for the invention, and used the bridge pickup for the factory position. Pluck was done at middle pickup location of low E string, open (unfretted).

The spectrum in this case is very similar so it makes a good frame of reference for future comparison i suppose.

Les


Spectrum Invention low E String.jpg
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Spectrum of Invention Low E STring
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Spectrum Invention low E String.jpg



Spectrum Factory low E String.jpg
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Spectrum of Factory pickups low E String
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Spectrum Factory low E String.jpg



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PostPosted: Wed Jan 05, 2011 3:01 am    Post subject: Reply with quote  Mark this post and the followings unread

And here is an audio sample of the two waveforms along with some discussion from me.

Les


Bridge Position Similar Sound 20110105 0449.1.mp3
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audio sample of prior posted spectrum

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 Filename:  Bridge Position Similar Sound 20110105 0449.1.mp3
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BobTheDog



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PostPosted: Wed Jan 05, 2011 4:11 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Les,

I bet if you tried other different mag pickups you would notice similar differences.

Different pickups sound very different, even combinations of different string types with different pickups produce very different sound.

My bet is also the attack changes as well but I must admit I have never thought of this before but it makes sense.

Cheers

Andy
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PostPosted: Wed Jan 05, 2011 10:52 am    Post subject: Reply with quote  Mark this post and the followings unread

As requested by woody monk, the next measurement is with the high E string. Magnets slightly adjusted also.

Les


Spectrum Factory high E String.jpg
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Spectrum with Factory pickups when high e string is plucked
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Spectrum Factory high E String.jpg



Spectrum Invention high E String.jpg
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Spectrum with invention, high e string plucked
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Spectrum Invention high E String.jpg



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PostPosted: Sat Jan 15, 2011 10:57 am    Post subject: Reply with quote  Mark this post and the followings unread

My favorite electric guitar tones, with minimal or zero processing (aka "clean guitar sounds") are the Fender Strat single coil tones, as represented by:

Mark Knopfler (of Dire Straits, around the time of this song):
http://www.youtube.com/watch?v=-HUfFtCHEzk

Eric Johnson (ok there's delay on the guitar, but the character still comes through):
http://www.youtube.com/watch?v=5liGR7dGL0Q

Wayne Krantz:
http://www.youtube.com/watch?v=AHviiarmV2M

With processing, well, all bets are off.

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Inventor
Stream Operator


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PostPosted: Mon Jan 17, 2011 11:36 am    Post subject: Reply with quote  Mark this post and the followings unread

Well thanks for your comments, though I still do not have a feel for what subset of the market will be best for these pickups. I'm actually starting to think of piano and violin and lute or other instruments (maybe banjo) that people actually want to hear what the instrument itself sounds like.

What I've learned from playing with the measurement software is four things.

1. there is NOT more harmonic content with the new pickup. It is about the same.

2. there is much lower dissonance with the new pickup (see above 1khz on low E string plots above)

3. the attack is much lower with the new pickup

4. the bass is less enhanced with the new pickup (a known flaw of coil wound pickups).

I'm wondering what part of the market is best suited for this pickup given those four observations.

Les

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GovernorSilver



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PostPosted: Mon Jan 24, 2011 3:10 pm    Post subject: Reply with quote  Mark this post and the followings unread

Inventor wrote:

I'm wondering what part of the market is best suited for this pickup given those four observations.

Les


My guess is the metal guitar market. They are the ones who are enthusiastic unusual pickups such as Q-Tuners, Lace Alumitones, etc.

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