2008)

      CATT-Acoustic        (version 8(g) shipping)          AkAbak (new web site)

            Celebrating 32 years of designing and shipping miniature audio circuit modules to OEM users!
               From 2008 all amplifiers use RoHS compliant parts and ENIG (lead-free) circuit boards.

email to:

          A recent special event -- click here to download a wonderful talk on mammal physiology by Dr. John Kanwisher -- amazing stuff!

Working in the fields of audio, acoustics and related control systems.
Multi-track location recording and surround sound mastering.

There is a lot of stuff here in Adobe Acrobat © (PDF) format.

Microprocessor solutions using the Motorola 68HC12 family.
Loudspeaker design and measurements
- Contributing Editor to AudioXpress Magazine
Room acoustic measurements and analysis
- Do you need a dodecahedron loudspeaker?
  Download a PDF drawing of the dodec shell.(37K)
Acoustical signal analysis
- Meet my mosquitoes
Surface-mount audio circuit modules for OEM's
In production: new module MM4S: stereo preamp for 2W or 3W electret microphones,
measuring ~3/4 by 1.5 inches (~19mm by 38mm), all SMT, 9-12V supply, low current, easy
access for gain switching or volume control, optional HF and LF equalization, optional mic bias regulator.
MM2: 9-volt micropower high-performance electret microphone preamp.
What can this tiny amplifier do for me?
Download a PDF datasheet (74K) 6/24/96
Download a microphone system drawing (19K) 10/18/96
- 919A: Dynamic to electret mic converter [12 x 18 mm!]
- Checkout the new MM3B balanced mic preamp.
  Read the story behind the MM3B
  Download a pc board illustration (119K) 11/30/2001
- I also taught acoustics and audio engineering for 22 years in the
  ECE Department at WPI (Worcester Polytechnic Institute)
- Once in a while I have some fun --
  Was that cannon fire on Vineyard Sound? ( 250K )
Engineering software for acoustic simulation.
- CATT-Acoustic: room acoustics simulation program
- AkAbak: Spice-like acoustic network simulation software
- Look for our listing in The Loudspeaker Industry Sourcebook
Copyright © 1996-2006 Dick Campbell
reports hits on this page! This Home Page was created using [ CoffeeCup - HTML Editor & Web Design Software ] , and last updated 6/16/2008.

Working in the fields of audio, acoustics and related control systems. Multi-track location recording and surround sound mastering.

Engineering software for acoustic simulation.

Working in the fields of audio, acoustics and related control systems.
Multi-track location recording and surround sound mastering.