This project is theme of my first article,
publishet in issue #158 of magazine CicuitCellar
In my first article I give detailed description of this
development, include theory and instruction for building your own.
That is my
first development with microcontroller.
(Video under the music of KoЯn ,
click on 'HD' in player for better quality)
9 band spectral
analyzer for audio frequency with ATMEL's
controler AT90S2313, working at 16MHz, sample rate at 32 KHz, 9
recursive filters + 1 decimation filter, clock, using PWM pin out
for auto level control with external transistor. Sound go trough
microphone, amplifier and go in controller for further
The source code, PCB and partlist can be found
here 9bandSpAn.zip .
band spectral analyzer 9bandSpAn.zip
language definition files nppTopLip.zip
Master's degree in communications engeneering from the Technical
University of Varna, Bulgaria. My
diplom project was "Creation of Synthetic Aperture
Radar(SAR)" (Creation of Software to be more specific) based
16-bit controller AM186, working at 33MHz. This controller is used
only for SAR image (any symbols,digits,circle's and line's), other
hardware on the same PCB procesing Radar image. These two images
are mixed in VRAM.
Curently I work in
HYDRAULIC ELEMENTS & SYSTEMS in city I was born -
Yambol, as a Mechanical CAD/CAM Designer. I
have interests in building tools/plugins/postprocessors for CAD and CAM software
that I use (Kompas
in my favorite languages - C#, Python and VB.
If you have any
questions, contact me by e-mail:email@example.com