Burnaby, British Columbia, July 24, 1992 -- Spectrum Signal Processing
today introduced three analog interface boards that provide analog I/O
with DSP capability for data acquisition and other defense and industrial
applications on the PC and VME busses. All three boards are designed for
use with Spectrum's DSP-LINK expansion interface. The first two new
Spectrum boards are the PC/Q16SA, designed for applications that need
general purpose multi-channel I/O, and the PC/Q16DS, which provides high
quality speech and audio band multi-channel signal I/O. Both boards are
designed as carrier boards that support multiple high-fidelity analog
daughter modules. Each board permits simultaneous sampling over four input
and output channels, and plugs ISA standard PC expansion slots and can be
easily interfaced to any of Spectrum's PC-based DSP boards using the
DSP-LINK connector.

"These new boards are the first in a new series of products from Spectrum
that combine DSP and analog I/O," said Barry Jinks, Spectrum president.
"We will be continuing to add these kinds of "daughter modules" for
customer-specific designs."

PC/Q16DS 

The PC/Q16DS board offers programmable sample rate generation up to 50 kHz,
linear phase digital anti-aliasing filters and 16-bit resolution delta
sigma converters.

The board is designed to oversample incoming analog signals at 64 times
sampling frequency. The bit streams are then filtered digitally, and
decimated to 16-bit values to yield quality reconstruction. The board also
provides an analog filter on the input and output to attenuate very high
frequency signals not accounted for by digital filtering.

PC/Q16SA

The PC/Q16SA board provides a digitally programmable sample rate up to 200
KHz. It affords two sources of sample rate generation -- a digitally
programmable source on the peripheral board or an external, user-generated
location. The board uses Burr-Brown's DSP102 and DSP202 ADCs and DACs.
Each input includes sample-and-hold amplifiers, and each input and output
channel provides fourth order active anti-alias/reconstruction filtering.

The PC/Q16DS and PC/Q16SA are available now and priced at US$ 2,495 each in
single quantities.

Quad VME I/O Module

Spectrum also introduced its Quad VME I/O module, which lets designers
customize their I/O system to their own specific application. Using the
module, designers can plug as many as four analog daughter modules into a
6U VME board, and construct systems with up to 8 I/O channels per board.
The board offers excellent interfaces for applications that need
multi-channel signal I/O. Multiple boards can be synchronized for large
systems that require simultaneous signal sampling.

The Quad VME board also features Spectrum's DSP-LINK interface so users can
connect it directly to other boards or peripherals and avoid typical VME
bus bottlenecks. The board is as flexible and versatile because the
daughter modules are based on a high speed serial bus and conform to a
basic hardware standard.

"The flexibility we are offering with the Quad VME board will permit its
use in most of the key applications that require digital signal processing
power," said Jinks. "These applications include radar and sonar systems,
speech or professional audio products, medical image processing or
industrial control systems."

Pricing for the Quad VME board begins at US$ 4,995 each in single
quantities. It will be available at the end of the third quarter.

Spectrum Signal Processing is a leading developer of system and processor,
software tools, hardware systems and other digital signal processing
products for the PC, VME, and SBus environments. These systems support
Digital Signal Processors from Analog Devices (ADSP21020/2102/2100), AT&T
(DSP32C), Motorola, Inc. (DSP96002/56002) and Texas Instruments
(TMS320C40/30/50/25), Spectrum's unique modular DSP hardware allows users
to interface off-the-shelf peripheral I/O boards with the processor of
their choice via the DSP-LINK system expansion interface. Spectrum Signal
Processing Inc. is publicly traded on the Vancouver Stock Exchange under
the symbol SSY.

Spectrum Signal Processing Inc
8525 Baxter Place, 100 Production Court
Burnaby, BC V5A 4V7 CANADA
604-421-5422

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