Orban Implements ''Direct'' Digital Audio Streaming Through FMeXtra(TM) RF Transmission Channels

Circuit Research Labs, Inc. (OTCBB:CRLI):

   --  Groundbreaking Capability Enables Terrestrial FM Broadcasters
        to Use Opticodec to Encode Coding Technologies' MPEG4
        aacPlus(R) Digital Radio Streams Directly to FMeXtra
        Receivers, from Anywhere in the World

   Digital Radio Express (DRE) and Circuit Research Labs, Inc.
(OTCBB:CRLI) announce the immediate availability of the Orban
Opticodec 1010 streaming module for the DRE FMeXtra(TM) Digital SCA
Encoder. This breakthrough software module permits direct streaming of
encoded aacPlus (MPEG4 HE AAC) audio from Orban Opticodec-compatible
audio servers into the FMeXtra encoder and over-the-air to FMeXtra
enabled receivers. The combined solution eliminates transcoding and
provides the ultimate in low-cost, high-fidelity digital audio
distribution.
   "The future of digital radio is streaming technology using
world-standard audio codecs such as aacPlus from Coding Technologies,"
said Derek Kumar, VP of Engineering at DRE. "FMeXtra in combination
with Orban's Opticodec fundamentally changes the distribution model
for broadcasting digital audio. There is no longer any distinction
between Internet streaming, cellular streaming, and broadcast
streaming."
   DRE's FMeXtra technology makes it possible to have multiple
digital audio channels on every FM station at very low cost. However,
creating the infrastructure required to aggregate, condition, and
encode digital content can be expensive and difficult to manage. The
Orban Opticodec solves these problems and simplifies the entire
digital encoding process. With the Opticodec software, DRE's FMeXtra
encoder can receive industry standard RTP/RTSP aacPlus streams with
Orban-optimized audio quality from any standard TCP connection and
streaming server in the world.
   "Orban's Opticodec streaming software is MPEG4 standards-based and
can already address multiple devices, like media players in computers
and 3GPP mobile devices," stated Greg Ogonowski, Orban's VP of New
Product Development. "Adding the ability to feed the FMeXtra
transmission chain makes it easier for broadcasters, netcasters, and
narrowcasters to make high-quality, aacPlus-encoded audio ubiquitous."
   The streaming capture software is now a standard feature of the
DRE FMeXtra encoder. Existing FMeXtra encoder customers are entitled
to the update at no charge. The Opticodec 1010 line of streaming
AAC/aacPlus encoders is available directly from Orban. For details,
see http://www.orban.com/products/streaming/opticodec-pc1010/

   About Circuit Research Labs, Inc.

   Circuit Research Labs, Inc., the parent company of Orban, is a
manufacturer of high-quality digital and analog audio processing,
transmission encoding, and noise reduction equipment for the radio, TV
and Internet audio industries. As technology evolves, Circuit Research
Labs continues to innovate with state-of-the-art audio processing
products for DAB, DTV and streaming media.
   Circuit Research Labs, Inc. purchased Orban(R) in May of 2000.
Orban was founded in 1970 by Bob Orban, the world's foremost expert in
transmission audio processing for broadcast. Orban leads the industry
in the design and manufacture of audio processors for radio,
television and Internet broadcasting. Recognized for its
standard-setting Optimod(R) digital audio processors and the
Opticodec(R) codecs, the Orban name has become synonymous with
reliable, high-performance products. Today, its versatile audio
processing equipment and codecs are the products of choice in
fast-paced production environments worldwide.

   About Digital Radio Express

   Digital Radio Express, Inc. (DRE) is a privately held Silicon
Valley-based company founded in 1997. DRE has made significant
contributions to the development of digital radio broadcast and
receiver technology. DRE has been granted numerous patents in wireless
digital communications, particularly in the field of AM and FM digital
radio broadcasting. DRE is currently focused on bringing its advanced
digital communication knowledge to further expand the digitization of
the FM spectrum, offering significant performance, economic and novel
future application enhancements to FM radio broadcasters. DRE's
FMeXtra digital subcarrier technology is a major milestone in
expanding digital capabilities for FM radio worldwide. To learn more
about DRE go to their web site www.dreinc.com

   About Orban/CRL

   Founded in 1970 by Bob Orban, the world's foremost expert in
transmission audio processing for broadcast, Orban leads the industry
in the design and manufacture of audio processors for radio,
television and Internet broadcasting. Recognized for its
standard-setting Optimod(R) digital audio processors and the Audicy
digital audio workstation, the Orban name has become synonymous with
reliable, high-performance products. Today, its versatile audio
processing equipment, editing tools and codecs are the products of
choice in fast-paced production environments worldwide. In 2000,
Orban(R) was acquired by Circuit Research Labs -- a manufacturer of
high-quality digital and analog audio processing, transmission
encoding, and noise reduction equipment. Orban/CRL Systems now
accounts for the majority of the global market for radio, TV and
Internet audio processing. As technology evolves, Orban/CRL continues
to innovate with state-of-the-art audio processing products for DAB,
DTV and streaming media.

   Orban/CRL Forward-Looking Statements

   This news release may contain "forward-looking" statements within
the meaning of the Private Securities Litigation Reform Act of 1995.
Management's anticipation of future events is based upon assumptions
regarding levels of competition, research and development results, raw
material markets, the markets in which the company operates, and
stability of the regulatory environment. Any of these assumptions
could prove inaccurate, and therefore there can be no assurance that
the forward-looking information will prove to be accurate.
   Orban/Circuit Research Labs, Inc. develops, manufactures and
markets electronic audio processing, transmission encoding and noise
reduction equipment for the worldwide radio, television, cable,
Internet and professional audio markets. The Orban division
manufactures and markets audio processing equipment, primarily using
digital technology. Orban Europe is a worldwide leader in ISO/MPEG,
audio, ISDN, satellite transmission, networking, and storage. More
information is available at www.orban.com, www.orban-europe.com, and
www.crlsystems.com.