Kinky Stardust (Acoustic Guitar Pickup): Unterschied zwischen den Versionen

''This page is about developing my very own acoustic guitar pickup design.''

and were mostly very crude (gluing a piezo transducer directly to guitar and drilling holes in my guitar - seriously?). Well, after ruling out picking the sound up from the strings directly (which btw. only works with western guitars) i saw two options: Picking up vibrations

noise whereas a classic microphone is more true to the sound of the guitar. That ment i needed a third option - a mix of both techniques. I figured acoustic emissions sensors (AES) would be a good starting point and I investigated different designs and decided to modify one of the approaches i found:  

After some experiments i build a pickup to the above AES design and step by step came up with three major modifications (which actually make my pickup work very differently compared to an AES - but anyway it was my starting point):

# There is no couplant and the wear plate doesn't directly touch the object. Instead i left an air cushion of about a 1.5 centimeters between them. Note that the chamber between object and case is airtight.

# I also introduced a gap (about 3mm) between the backside of the piezo element and the dampening material and drilled a small hole (~ 1mm) in the dampening material, so that the backside pocket is not airtight.

# I used hard rubber as case material (i tried metal first).

===== Theories™ =====

2. The FFT (on a Rigol oscilloscope) showed significant beat noise.

I'm aware that though I started with an AES the final pickup works very differently :)

# Has very decent sound quality, with dampening on the lower frequencies and a bit stronger dampening on the higher frequencies - still resulting in an easy to correct curve.

# Is rather easy to mount and doesn't require invasive modifications to the guitar.

===== Comparisions, DSP Analysis, Graphs and Samples =====

 

 

Usage video (Please note that i forged the audio, recording it a second time directly to my usb sound interface because i didn't have a decent microphone with me. gonna re-record tomorrow but believe me it sounds real good on the guitar amp. It also should be noted that i didn't do equalization, which would be easy to do, because i wanted to convey the unaltered sound)