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Sensicomm LLC - DSP design services.

Algorithms, software and hardware for sensors, signal processing, and communications.
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2016-08: Codecs for LMR, Talk about voice codecs for Land Mobile Radio on August 19, 2016. Slides are posted. See my blog post at
2009-06: Open Source 100MHz A/D and Oscilloscope FPGA project on SourceForge.


Figure 12 from US Patent 5,668,925
Speech analysis and encoding algorithm from Patent 5,668,925

sample graphic from a tutorial on Turbo codes
From a tutorial on Turbo Codes (error-correcting codes for wireless data transmission).

Motor controller PCB using the Atmel AVR
DC motor controller with Atmel AVR uC and USB interface.

DSP Collaborative logo Member of the DSP CollaborativeTM, supporting BLACKfinTM and TigerSharcTM processors from Analog Devices.
Valid HTML 4.01 Transitional Valid CSS! Linux penguin logo, by Budig
Sensicomm LLC was started in 2003 by Joe Rothweiler to provide research and development services in the areas of digital signal processing, speech and audio analysis, and general signal processing. Services include basic analysis, algorithm development, programming, and hardware design and development.

Clients have included Sirius Satellite Radio, Agere Systems (a department that is now part of Infineon), L-3 Communications, and various smaller and start-up companies.

Previously I worked in R&D at companies including Lucent and Sanders A Lockheed-Martin Company (now part of BAE Systems). Work included low-rate speech and audio coding, voice analysis and processing, and communication system design and simulation. Some highlights are a patent on the Polyphase Quadrature Filter bank, very low rate (1000 bps and below) speech coding algorithms, and work on the Sirius Satellite Radio audio compression components. See the Publications and Projects links above for more information about some past work.


I provide DSP-related consulting services such as theoretical analysis, troubleshooting and problem solving on existing systems, reverse engineering of old designs, training and tutorials. Most projects are billed on a time & materials basis, but other contractural arrangements such as teaming, fixed-price, royalties, etc will be considered.

Projects have ranged in length from a few days to several months. Reasonable amounts of travel are OK.


For additional information, contact
Joseph Rothweiler
+1 603 882 5688
See the About link at the top of the page for company address, DUNS, CAGE code, etc.
Company mascot - just for decoration

The website was reformatted and updated for 2009. If you're looking for an older page, it might be here

Page last updated $Date: 2009/07/28 18:28:01 $