Sensicomm LLC - DSP design services.

Algorithms, software and hardware for sensors, signal processing, and communications.
Home About Contact Publications Projects Downloads Sitemap Blog

News

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 sensicomm.blogspot.com/2016/08/...
2009-06: Open Source 100MHz A/D and Oscilloscope FPGA project on SourceForge. mhz100q.sourceforge.net

Examples

Speech analysis and encoding algorithm from Patent 5,668,925

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

DC motor controller with Atmel AVR uC and USB interface.

---

Member of the DSP Collaborative^TM, supporting BLACKfin^TM and TigerSharc^TM processors from Analog Devices.

---

---

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.

Services

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.

Capabilities

• Mathematical analysis and development of algorithms.
  • Digital filtering, FFT's, spectral analysis.
  • Waveform modulation/demodulation (PSK, FSK, OFDM, ...).
  • Error-correcting codes (Reed-Solomon, Convolutional, Golay, etc).
• Implementation in software (C/C++, Matlab, various uC or DSP assembly languages), Xilinx FPGA firmware.
• Hardware design and assembly for interfacing and specific processing functions.
  • Designed projects using Atmel AVR, NXP (Philips) ARM microcontroller chips.
  • FTDI and NXP USB interfaces.
  • Switched capacitor analog circuits: Anadigm Field Programmable Analog Array (FPAA) and Cypress PSoC.
• Proposals - Experience with Gov't contracts, proposal writing.
• Presentations and training - Tutorials on DSP-related functions (FFT, Error-correcting codes, Signal demodulation, audio processing).
• Member of Analog Devices DSP Collaborative, supporting TigerSharc and BLACKFin processors.

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