Engineering

Watch this Soundlazer Video

If you aren’t sure what a parametric speaker is, this video will make it easy to understand.  There are no tricks here.  Watch as the audio bounces around like a laser beam.

Open Source and programmable

Open Source and programmable

The Soundlazer has a built in programming port that interfaces with Analog Device’s Sigma Studio DSP developing environment.  An easy to use graphical interface allow you to create your own custom filters, compressors and other sound shaping algorithms to improve or change the characteristics of the sound beam any way you like.  The Soundlazer is a great tool for experimenting with parametric speakers or for use every day.

Designing the enclosure

Designing the enclosure

Designing the case turned out to be as difficult as the circuit itself. A modern, “Apple” style case was the goal but with a retro feel. A classic microphone offered the inspiration for this design project.

 

Classic Ribbon Microphone

 

The high frequencies emitted by the Soundlazer presented some problems in the case design.  With thirty nine emitters, a way had to be found to enclose the electronics without putting anything in front of the piezo elements that would inhibit or affect the ultrasonic signal.  At these frequencies, even a speaker grill could change the way the sound is emitted.

 

 The case and all mechanical components were designed in Solidworks

 

An adjustable stand will be made of 12 gauge steel, bent and then powder coated

 

Each component was modeled to make sure it fit properly inside the case

 

 

The final render of the design in Solidworks

 

 

 

 Photo realistic render of the Sounlazer

Circuit Board Layout

Circuit Board Layout

 

The SoundLazer uses very small surface mounted components

There is a whole lot of technology crammed into a small space in the Soundlazer.  Many of the surface mount components are size 0402 which is going to make prototyping this board a bit tricky.

Time to get out the microscope and tweezers for this soldering job.

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