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March 30, 2004

News Release: Dspfactory and RTI bring digital clarity to moderately-priced hearing aids

From: Dspfactory Ltd. - Mar 30, 2004


--New components allow hearing aid manufacturers to deliver superior digital signal processing in broadly-affordable devices

WATERLOO, ON and ARDEN HILLS, MN, March 30, 2004 -- Dspfactory Ltd., a leading provider of reconfigurable digital signal processing (DSP) technology for digital hearing aids and other portable audio devices, and Resistance Technology Inc. (RTI), a wholly owned subsidiary of Selas Corporation of America (AMEX: SLS) and a leading global supplier of electronic components to hearing instrument manufacturers, today announced they have jointly developed microminiature hearing aid components that bring the power and clarity of digital signal processing to instruments that can be inexpensively manufactured.

The DSP-enabled components make the benefits of digital technology accessible to a broad market, allowing hearing aid manufacturers of any size to deliver the breakthrough performance advantages of DSP in their devices.

Users of hearing aids made with the RTI-Dspfactory components will enjoy the benefits of clearer communication, reduced background noise, and an enhanced user experience -- all provided in an affordable instrument.

"Moderately-priced DSP hearing aids are the fastest-growing market segment, and we're pleased to be working with Dspfactory to offer sophisticated signal processing capabilities to manufacturers who are looking to capture a share of that growth," said RTI president Mark Gorder.

World-wide sales and support will be managed by RTI, which provided software engineering and system design for the components. Dspfactory contributed complementary expertise in ultra-low power DSP technology. Its DSP audio systems are specifically designed for hearing aids where exceptional sound quality, low power consumption and miniaturization are critical design requirements.

"Hearing aid manufacturers see exciting opportunities for growth with digital instruments at widely-affordable price points," said Robert Tong, president of Dspfactory. "We're delighted to be partnered with RTI to provide world-leading technology, service, and support -- bundled at a compelling price -- to manufacturers targeting that rapidly-growing market."

The new line of products is an extension of the RTI Digital One family. For availability and product information, manufacturers should contact Michael Geraci at (651) 604-9560.

About RTI
RTI is a wholly owned subsidiary of Selas Corporation of America (AMEX: SLS) headquartered in Arden Hills, Minnesota. RTI designs, develops, engineers and manufactures microminiaturized medical and electronic products. The company's core business, Precision Miniature Medical and Electronic Products, supplies microminiaturized components, systems and molded plastic parts, primarily to the hearing instrument manufacturing industry, as well as the computer, electronics, telecommunications and medical equipment industries. Through its core competencies and robotic manufacturing expertise, RTI believes it is well-positioned to compete in the hearing health market and a medical device market that increasingly demands products with increased miniaturization, better cost containment, more reliability and high customer satisfaction. RTI's parent company, Selas Corporation of America, has facilities throughout the United States, Asia and Europe. Selas' common stock is traded on the American Stock Exchange under the symbol "SLS". For more information, visit or

About Dspfactory
Dspfactory Ltd., a fabless semiconductor company, is a leading-edge developer of ultra-miniaturized, ultra-low power, software-programmable, digital signal processing (DSP) technology. Dspfactory's mission is to embed its unique technology ubiquitously into a wide range of market applications. Its target markets include hearing aids, headsets, personal digital assistants, personal digital audio players, embedded sensors, baseband wireless devices, cellular telephones, or any other portable, battery-powered DSP-based product where size and power consumption are as important as flexible, advanced software processing capabilities. To support the development and implementation of signal processing software solutions on its technology platforms, Dspfactory also provides a complete set of easy-to-use support tools and services, ranging from software development and testing tools to custom DSP software development and engineering services. For more information, visit


Media Contacts:

For RTI:
Michael Geraci
Vice President Hearing Health SBU
Resistance Technology, Inc.
Tel: +1 651 604 9560

For Dspfactory:
Richard McClurg
Marketing Manager
Dspfactory Ltd.
Tel: +1 519 884 9696 Ext. 2283