How to Build Your Own Speakers: Step-by-Step DIY Tech. The electronic components inside a loudspeaker are actually quite simple.
The drivers and crossovers pictured here are available in a $369 kit. (Photograph by Chris Eckert) It was back in 1924 that a couple of researchers from General Electric, Chester Rice and Edward Kellogg, patented what remains the basic design for virtually all the world's loudspeakers. In the 84 years since, engineers and enthusiasts have invested a lot of thought and energy in the refinement of Rice and Kellogg's concept, creating a valuable knowledge base for the do-it-yourself crowd. Most Popular Linux Downloads and Posts of 2012. Create a Kickass, Seamless, Play-Everything Media Center: The Complete Guide. Candy Coasters. Microphone Turns Any Surface into Touch Interface. Bruno Zamborlin collaborated with Norbert Schnell to use a contact microphone connected to a system that processes sound in real time to turn any rigid surface into a touch interface.
There’s no way to explain it adequately in words, so just watch the video: In Zamborlin’s own words, here’s how the magic is accomplished: Through gesture recognition techniques we detect different kind of fingers-touch and associate them with different sounds. In the video we used two different audio synthesis techniques: - physic modelling, which consists in generating the sound by simulating physical laws; - concatenative synthesis (audio mosaicing), in which the sound of the contact microphone is associated with its closest frame present in a sound database.