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How to make a piezoelectric trumpet pickup

How to make a piezoelectric trumpet pickup
For those of us who will never learn guitar, there's a better instrument called the trumpet. Digitizing this beautiful tone and applying effects and distortion seems like a waste of effort to some. But others could view it as an escape from the drudgery of the boring and unfun. Using the magic of piezoelectric crystals, we're able to convert a trumpet sound into electronic waves.
 
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Step 1Materials and Tools

Materials and Tools
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Materials
2 – Piezo Transducers - Radio Shack 273-0073
1 – 1/4” Phone Jack - Radio Shack 274-0340
1 – 10 nF Capacitor
1 – Straight mute
1 – Trumpet

Tools
Wire cutters
Wire stripper or knife
Electrical and ScotchTape
Soldering iron
Solder
Safety glasses or solder shield

The piezo transducers are often marked as buzzers or elements. These will be used as pickups to convert the sound to electrical signals. In short, mechanical vibrations of piezoelectric crystals creates a voltage with respect to the vibrations. More detail on how these work can be found at wikipedia.

The phone jack can be replaced with any type of connector you need. This is set up to be plugged into an electric guitar or bass amp. A 1/8th” jack could be used to connect to a microphone input on a computer for recording.

For the mute, I used a Stone Lined straight mute because it is inexpensive and has good mounting locations for the pickups.

My total cost for this was $3.99 for the phone jacks, and $1.99 for each piezo transducer. The rest of the items are relatively cheap except for the trumpet.
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4 comments
May 12, 2012. 6:37 PMGimli76 says:
Do you know any substitute for the Piezo Transducer? We don't have Radio Shacks in Uruguay :)
I thought of using a few Piezoelectric Buzzers (the ones used as internal speaker in PCs, ) connected in serie, what do you think?

Here if u wanna see what I mean: http://img.alibaba.com/photo/209189527/KLS3_P_2317_Piezo_Transducer_piezo_buzzer_small_buzzer.jpg

Thanks in advance.
Mar 20, 2011. 4:13 PM1spartan95 says:
Put some reverb on it and your good!
Dec 9, 2010. 11:54 AMfullmetal1313666 says:
nice. gota love the versatility of piezos as pickups

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