A signal processing system includes an analog front end and the
digital processing part. The successful operation of the system
depends on the both parts, as well as the interface between them.
Some operations could be better implemented in the analog; the others
should be done in digital domain. Mixed signal processing requires
the knowledge of both analog and digital design methodologies –
and the ability to analyze their strengths and weaknesses with respect
to the particular problem.
The majority of the signal processing is done in the digital domain.
Our main workhorse is the BlackFin DSP from Analog Devices; we also
use the TMS320x DSP from Texas Instruments. We develop custom algorithms
optimized for the particular application and hardware.
The areas of expertise include:
* High Speed Modems
* Wireless communication
* Echo Cancellation
* Audio processing
* Digital Class D amplifiers
* Speech compression
* Error correction codes
* Control systems
* Data acquisition, measurement, instrumental algorithms
Automotive controllers (ECU) must operate in harsh environments,
comply with strict EMI/EMC regulations, be very reliable, provide
the fallback and the test modes of the operation, and be reasonably
priced. Software bugs and hardware failures are not the option.
The growing set of the communication protocol stacks over CAN makes
the development increasingly complicated. We provide our expertise
in design of the controller hardware and software.
A DAP (digital audio processor) is a constituent part of a modern
HiFi audio system. The audio DSPs perform crossover filtering, frequency
equalization, dynamic range compression or expansion, surround sound
and the variety of audio effects. Digital technology allows for
the flexible configuration and the accurate setup of the parameters.
We design the digital audio processors using the specialized ICs
and/or the programmable DSPs (TMS320x, ADI BlackFin).
The Class D amplifiers are increasingly popular. The main advantage
of the Class D is in the high power efficiency, which exceeds 90%
in the medium or high power applications. The improved power efficiency
translates into the smaller size of the heat sink, the material
and the cost savings, and the longer operating hours for the battery-powered
devices. However, the optimization of a Class D amplifier is complicated
and requires special knowledge. We design the analog and the digital
Class D amplifiers. Our experience includes the amplifiers with
the rated output power up to 10 kW.