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

Amir (Diskussion | Beiträge)
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Amir (Diskussion | Beiträge)
Keine Bearbeitungszusammenfassung
 
(8 dazwischenliegende Versionen desselben Benutzers werden nicht angezeigt)
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===== Research on existing pickups =====
===== Research on existing pickups =====
So, i did some research on usual pickup technologies and guess what i found? None of them really met my specifications. Also existing DIY solutions tended to fail my specifications utterly  
So, i did some research on usual pickup technologies and guess what i found? None of them really met my specifications. Also existing DIY solutions tended to fail my specifications utterly  
and were mostly very crude (gluing a piezo directly to guitar - seriously?). Well, after ruling out picking the sound up from the strings directly i saw two options: Picking up vibrations
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
of the corpus directly (e.g contact mic) or picking up "airborne" sonics (e.g. classic microphone). Both have their pros and cons: e.g a contact mic has a very low susceptibility to background
of the corpus directly (e.g contact mic) or picking up "airborne" sonics (e.g. classic microphone). Both have their pros and cons: e.g a contact mic has a very low susceptibility to background
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 investigated different designs for acoustic  
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:  
emissions sensors (AES) and decided to modify one of the approaches i found:  
<gallery>
<gallery>
Datei:AE-Transducer.gif|Acoustic Emission Transducer
Datei:AE-Transducer.gif|Acoustic Emission Transducer
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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):
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.
# 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  
# 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.
pocket is not airtight.
# I used hard rubber as case material (i tried metal first).
# I used hard rubber as case material.


===== Theories™ =====
===== Theories™ =====
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===== The Result =====
===== The Result =====
# Has very decent sound quality, with a slight dampening on the lower frequencies and a bit stronger on the higher frequencies - resulting in an easy to correct curve.
# 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.
# Is rather easy to mount and doesn't require invasive modifications to the guitar.
# Doesn't hinder guitar playing (at least as far as I'm aware of)
# Doesn't hinder guitar playing (at least as far as I'm aware of)
# Hasn't been tested with different guitars but it seems to do a good job on preserving the characteristics of the guitar.
# Hasn't been tested with different guitars but it seems to do a good job on preserving the characteristics of the guitar.
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# Profit!
# Profit!


===== Video, Pics and Sample =====
===== Comparisions, DSP Analysis, Graphs and Samples =====
 
TBD
 
===== Video and Pics =====


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)
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)
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Datei:ksp_hole.jpg|The "breathing hole"
Datei:ksp_hole.jpg|The "breathing hole"
</gallery>
</gallery>
===== Addendum (1): "The Toy" =====
I thought with a little imagination it is pretty obvious what kind of toy it was i re-purposed. Apparently i was wrong, since several people asked.
Anyway, I decided to draw a picture:
[[File:hideous.jpg|thumb|left|One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them]]
===== Addendum (2): Alternative Use-Cases =====
[[File:ksp_medical.jpg|thumb|left|Medical Applications]]
[[File:ksp_security.jpg|thumb|left|Security Research]]