This is a good explanation of how parametric speakers work and a few interesting uses. The Soundlazer can do all these things and more.
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. […]
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 […]
The design of the Soundlazer circuitry took place over the last year with lots of testing and some experimentation. Many of the results have been posted throughout this website. A line level, stereo headphone jack similar to the one found on most computers and iPods connects the ADAU1701 Digital Signal Processor to the outside word. […]